Emerson EZH and EZHSO Series Pressure Reducing Regulators Data Sheet
Contents
1. Pr BLOCK VALVE aN y gt BLOCK VALVE K HAND VALVE 7 P ii VALVE PILOT PILOT i H CONTROL LINE HAND VALVE N Ko j BLOCK VALVE upr SLAM SHUT DEVICE N E0957 d d T coiTRoL LINE HAND VALVE N decane CONTROL LINE 11E Wide Open Monitoring System with Slam Shut Device for Overpressure and Underpressure Shutoff Using One Manometric Device This Application May Require Two Manometric Devices as Shown in Figure 11F WORKING PILOT MONITOR PILOT i A H SE _ rs A PILOT suppe M FILTER k N E PILOT SUPPLY FILTER Va BLOCK VALVE i SLAM SHUT DEVICE E0958 PILOT CONTROL LINE BLOCK VALVE HAND VALVE wi HAND VALVE NGONTROL LINE f HAND VALVE ar K ALTERNATE CONTROL LINE 11F Working Monitoring System with Slam Shut Device for Overpressure and Underpressure Shutoff Using Two Manometric Devices This Application May Only Require One Manometric Device as Sh2. Lra A BT PILOT SUPPLY FILTER n gS a J Fa CONTROL LINE BLOCK VALVE BLOCK VALVE A 5 a a H i HAND VALVE SENSE LINE N VALVE 3 E0954 ji SLAM SHUT DEVICE A 11B Minimum and Maximum Upstream and Downstream Pressure SGONTROL LINE M ALTERNATE CONTROL LINE a B 5 DN PILOT SUPPLY FILTER BLOCK VALVE S 0 R LINE BLOCK VALVE E Ji i ii ares VALVE SLAM SHUT DEVICE N mM E0955 k gt t CONTROL LINE HAND VALVE Re HAND VALVE Nena CONTROL LINE 11C Overpressure and Underpressure Shutoff Using Separate Manometric Devices Figure 11 Type EZHOSX Installation Schematics 13 Bulletin 71 2 EZH and EZHSO PILOT SUPPLY FILTER A BLOCK VALVE PILOT N j T CONTROL LINE E0956 EXTERNAL TRIP PRESSURE 11D External Signal SLAM SHUT DEVICE CONTROL LINE c A s PILOT SUPPLY FILTER
3. for Type EZHOSX Installation Schematics For more information about the Types EZHOSX and EZHSO OSX contact your local Sales Office Capacity Information Note EZH and EZHSO Series flow capacities are laboratory verified therefore they may be sized for 100 flow using published capacities as shown It is not necessary to reduce published capacities Tables 17 through 20 show the natural gas regulating capacities of the EZH and EZHSO Series regulators at selected inlet pressures and outlet pressure settings Flows are in thousands of SCFH at 60 F and 14 7 psia or in thousands of Nm h at 0 C and 1 01325 bar of 0 6 specific gravity natural gas To determine equivalent capacities for air propane butane or nitrogen multiply the capacity by the following appropriate conversion factor 0 775 for air 0 628 for propane 0 548 for butane or 0 789 for nitrogen For gases of other specific gravities multiply the given capacity by 0 775 and divide by the square root of the appropriate specific gravity Then if capacity is desired in Nm h at 0 C and 1 01325 bar multiply SCFH by 0 0268 SETPOINT ADJUSTMENT RING TRAVEL STOP E0565 Figure 10 Slam Shut Device in Closed Position To find approximate regulating capacities at pressure settings not given in Tables 17 through 20 or to find wide open flow capacities for relief sizing at any inlet pressure perform one of the following procedures Then convert using the fa
4. gt 86 330 14 751375 387 465 497 1850 470 20 30 516 13 25 11 75 12 50 13 25 2 00 13 75 13 61 16 75 8 00 13 25 3 80 37 298 317 337 60 8 281 97 4g 346 15 36 390 456 203 397 18 60 472 20 86 530 13 9 14 5 15 5 2 00 15 5 14 1 16 8 10 03 5 5 4 100 353 368 394 60 8 506 129 354 358 15 85 403 457 255 449 261 663 26 1 663 Table 22 Approximate Weights APPROXIMATE SHIPPING WEIGHTS BODY SIZE NPT SWE CL150 RF CL300 RF CL600 RF SCH 40 SCH 80 For Type OSX NPS DN Ibs kg Ibs kg Ibs kg Ibs kg Ibs kg Ibs kg Ibs kg Ibs kg 1 25 77 35 77 35 79 36 83 38 87 39 77 35 77 35 Add 17 Add 8 2 50 136 62 136 62 139 63 143 65 150 68 136 62 136 62 Add 30 Add 14 3 80 390 177 390 177 394 179 397 180 410 186 390 177 390 177 Add 41 Add 19 4 100 433 197 451 205 481 219 514 234 433 197 433 197 Add 57 Add 26 24 Bulletin 71 2 EZH and EZHSO A A WU UD CoO D l Y 0 98 25 lt lt _ N MECHANISM BOX REMOVAL GE01592_A CLEARANCE INCH mm Figure 13 Types EZHOSX and EZHSO OSX Dimensions Table 23 Dimensions DIMENSIONS WITH SLAM SHUT BOD
5. 0 01 100 5570 179 31 1 5410 178 30 4 0 61 0 02 0 59 0 02 P 10 80 4860 148 32 8 4730 146 32 4 0 67 0 02 0 66 0 02 50 3340 93 4 35 8 3320 93 0 35 7 0 80 0 01 0 79 0 01 30 2080 54 3 38 3 2050 55 0 37 3 0 92 0 01 0 88 0 01 Table 14 Types EZH and EZHSO Main Valve with Whisper Trim Cage Wide Open Flow and Sizing Coefficients IEC SIZING COEFFICIENTS MAIN VALVE TRIM LINE SIZE EQUALS 2 1 LINE SIZE TO BODY BODY SIZE OF BODY SIZE SIZE PIPING 1 1 Line to 2 1 Line to CAPACITY Body Size Body Size FL NPS DN Cg Cy C1 Cg Cy C1 Xt Fp Xt Fo 100 1692 44 2 38 2 1600 47 7 33 5 0 82 0 03 0 71 0 03 2 an 80 1524 39 1 39 0 1444 42 3 34 1 0 90 0 03 0 74 0 03 50 1159 29 1 39 8 1143 31 9 35 8 0 99 0 02 0 81 0 02 30 718 172 41 7 722 19 2 37 6 0 99 0 02 0 90 0 02 100 3642 107 34 1 3445 112 30 7 0 59 0 02 0 60 0 02 3 80 80 3045 84 7 35 9 2885 85 8 33 6 0 72 0 02 0 71 0 02 0 89 50 2011 51 3 39 2 1985 53 4 37 1 0 95 0 01 0 87 0 01 i 30 1409 34 2 41 2 1421 36 3 39 1 0 99 0 01 0 96 0 01 100 5740 184 31 0 5570 183 30 5 0 61 0 02 0 59 0 02 w 80 5010 152 32 7 4870 150 32 4 0 67 0 02 0 66 0 02 50 3440 96 2 35 6 3420 95 8 35 3 0 80 0 01 0 79 0 01 30 2140 55 9 38 1 2110 56 7 37 3 0 92 0 01 0 88 0 01 Table 15 Types EZHOSX and EZHSO OSX Main Valve with Whisper Trim Cage Regulating Flow and Sizing Coefficients IEC SIZING COEFFICIENTS MAIN VALVE TRIM LINE SIZE EQUALS 2 1 LINE SIZE TO BODY i BODY SIZE OF BODY SIZE SIZE PIPING 1 1 Line to 2 1 Line to CAPACITY Body Size Body Si
6. 804 21 6 75 58 30 2 0 61 1 6 244 6 5 486 13 0 781 21 0 i 40 2 7 57 1 5 228 6 1 452 12 1 735 19 7 60 4 1 42 1 1 167 4 4 327 8 7 545 14 6 Up to 32 Up to 2 2 81 2 2 323 8 6 647 17 3 1029 27 6 100 69 40 2 7 79 2 1 315 8 4 628 16 8 1008 27 0 i 50 3 4 15 2 0 301 8 0 598 16 0 968 26 0 85 5 8 49 1 3 193 5 1 376 10 1 629 16 9 Up to 43 Up to 2 9 98 2 6 392 10 5 786 21 1 1251 33 5 125 86 50 3 4 96 2 5 386 10 3 770 20 6 1233 33 0 75 5 1 87 2 3 346 9 2 684 18 3 1117 30 0 110 7 5 54 1 4 215 5 7 420 11 2 703 18 8 Up to 52 Up to 3 5 116 3 1 464 12 4 929 24 9 1478 39 6 150 10 3 75 5 1 110 2 9 437 11 7 869 23 3 1405 37T 95 6 5 100 27 399 10 7 788 21 1 1290 34 6 130 8 9 68 1 8 268 7 2 523 14 0 875 23 5 Up to 73 Up to 5 0 151 4 0 604 16 2 1210 32 4 1925 51 6 200 13 8 100 6 9 144 3 9 573 15 4 1140 30 6 1841 49 3 125 8 6 133 3 6 528 14 2 1043 28 0 1705 45 7 185 12 8 69 1 8 272 7 3 529 14 1 889 23 8 Up to 115 Upto 7 9 221 5 9 884 23 7 1771 47 5 2819 75 7 300 20 7 150 10 3 212 5 7 845 22 6 1682 45 1 2712 72 8 i 200 13 8 188 5 0 750 20 1 1479 39 6 2426 65 1 275 19 0 107 2 9 422 11 3 823 22 1 1383 37 1 Up to 155 Up to 10 7 291 7 8 1166 31 2 2337 62 6 3718 99 8 200 13 8 280 7 5 1117 30 0 2224 59 6 3583 96 2 400 27 6 250 17 2 259 6 9 1031 27 6 2038 54 6 3327 89 3 300 20 7 225 6 0 895 24 0 1758 47 1 2907 78 0 350 24 1 170 4 6 672 18 0 1312 35 2 2196 58 9 Up to 196 Up to 13 5 361 9 7 1447 38 8 2900 77 7 4614 124 500 34 5 225 15 5 355 9 5 14
7. Bi 14239T0012 Pen 102 7 0 Types SMS to 5 to 55 rown T 1470 101 17 andBMS2 808 to 1470 55 7t0101 Black T14240T0012 174 12 0 81t0323 5 58t022 3 Brown T14239T0012 14 5 1 00 145 10 0 514 35 4 236 122t0514 84t035 4 Black T14240T0012 Bellows 36 3 25 290 20 0 257101058 17 7t0729 Gray 114238T0012 1058 729 315 72 5 5 0 479 33 0 1 Minimum suggested difference between slam shut set pressure and normal operating pressure of the system 2 Maximum difference between overpressure and underpressure when using one manometric device Type BMS1 with tripping hook For underpressure and overpressure points greater than this maximum number use a second manometric device Type BMS2 for underpressure protection Table 6 Applications and Construction Guide See Figure 8 MECHANISM BOX REQUIRED MANOMETRIC SENSING DEVICE REQUIRED APPLICATION Type BM1 Type BM2 Type BMS1 Type BMS2 Overpressure Shutoff OPSO y es Underpressure Shutoff UPSO yas No No Overpressure Shutoff OPSO and Yes Underpressure Shutoff UPSO Overpressure Shutoff OPSO and 2 Underpressure Shutoff UPSO en ves No Yes Overpressure Shutoff OPSO Overpressure Shutoff Yes 2 Yes OPSO and Underpressure Shutoff UPSO 1 When using one manometric sensing device Type BMS1 for both overpressure and underpressure shutoff make sure that the difference between set pressures fa
8. LINE SIZE EQUALS BODY SIZE NPS DN een XT Fp 100 0 75 0 61 80 0 81 0 66 d 29 50 0 73 0 79 30 0 65 0 81 100 0 78 0 56 80 0 79 0 71 2 30 50 0 98 0 71 30 0 99 0 72 100 0 87 0 56 80 0 87 0 70 3 ee 50 0 98 0 74 30 0 99 0 72 100 0 73 0 61 80 0 84 0 73 4 199 50 0 91 0 76 30 0 86 0 77 Xt Fp 0 94 0 61 0 68 0 66 0 26 0 79 0 87 0 81 0 86 0 56 0 92 0 71 0 95 0 71 0 99 0 72 0 59 0 56 0 72 0 70 0 90 0 74 0 71 0 72 0 66 0 61 0 78 0 73 0 88 0 76 0 87 0 77 FL 17 Bulletin 71 2 EZH and EZHSO Table 13 Types EZH and EZHSO Main Valve with Whisper Trim Cage Regulating Flow Coefficients and Sizing Coefficients IEC SIZING COEFFICIENTS MAIN VALVE TRIM LINE SIZE EQUALS 2 1 LINE SIZE TO BODY BODY SIZE OF BODY SIZE SIZE PIPING 1 1 Line to 2 1 Line to CAPACITY Body Size Body Size FL NPS DN Cg Cy C1 Cg Cy C1 Xt Fp Xt Fo 100 1627 42 5 38 3 1539 45 9 33 5 0 82 0 03 0 71 0 03 P o 80 1466 37 6 39 0 1389 40 7 34 1 0 90 0 03 0 74 0 03 50 1114 28 0 39 8 1099 30 8 35 7 0 99 0 02 0 81 0 02 30 689 16 6 41 6 695 18 4 37 7 0 99 0 02 0 90 0 02 100 3502 103 34 1 3313 108 30 8 0 59 0 02 0 60 0 02 3 80 80 2928 81 4 36 0 2774 82 6 33 6 0 72 0 02 0 71 0 02 0 89 50 1934 49 3 39 2 1908 51 4 37 1 0 95 0 01 0 87 0 01 i 30 1355 32 9 41 2 1366 35 0 39 0 0 99 0 01 0 96
9. LINE SIZE TO BODY SIZE PIPING INLET PRESSURE OUTLET PRESSURE NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 7 DN 100 psig bar psig bar SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h Up to 196 Up to 13 5 364 9 8 1476 39 6 3103 83 2 4732 127 500 34 5 225 15 5 357 9 6 1451 38 9 3031 81 2 4673 125 300 20 7 330 8 8 1345 36 0 2765 74 1 4379 117 400 27 6 259 7 0 1058 28 4 2134 57 2 3492 93 6 Up to 237 Up to 16 3 435 11 7 1763 47 2 3705 99 3 5651 151 600 41 4 300 20 7 419 11 2 1701 45 6 3535 94 7 5498 147 375 25 9 388 10 4 1579 42 3 3238 86 8 5149 138 450 31 0 338 9 1 1378 37 0 2793 74 9 4535 122 Up to 278 Up to 19 2 505 13 5 2049 55 0 4308 115 6570 176 700 48 3 350 24 1 487 13 1 1979 53 0 4114 110 6397 171 i 400 27 6 469 12 6 1907 51 1 3934 105 6196 166 600 41 4 314 8 4 1283 34 4 2575 69 0 4251 114 Up to 350 Up to 24 1 569 15 2 2311 62 0 4836 130 7431 199 800 55 2 450 31 0 538 14 4 2187 58 6 4517 121 7100 190 609 42 0 441 11 8 1800 48 2 3644 97 7 5926 159 Up to 350 Up to 24 1 649 17 4 2630 70 5 5535 148 8424 226 900 62 1 500 34 5 606 16 2 2466 66 1 5098 137 8003 214 609 42 0 552 14 8 2249 60 3 4591 123 7361 197 Up to 350 Up to 24 1 726 19 5 2942 79 0 6219 167 9391 252 1000 69 0 500 34 5 693 18 6 2814 75 4 5851 157 9092 244 609 42 0 650 17 4 2645 71 0 5437 146 8615 231 Up to 350 Up to 24 1 802 21 5 3248 87 0 6894 185 10 342 277 1100 75 8 500 34 5 775 20 8 3147 84 3 6576 176 10 131 272 609 42 0 740 19 8
10. soft seated regulators They are designed for use in high pressure natural gas transmission city gate stations large capacity distribution systems and power plant feeds They provide smooth and reliable operation tight shutoff and long life For underpressure or overpressure protection the Types EZHOSX and EZHSO OSxX are available with an integral slam shut device to completely shut off the flow of gas to the downstream system The slam shut has a mechanism box and a manometric device The manometric device is a spring and diaphragm actuator Its movement activates the detection stage of the mechanism box The shutoff is a two stage process the detection stage and the power stage This separation between detection stage and power stage provides maximum precision alleviating many false trips caused by environmental vibrations The slam shut device includes a bypass valve that will allow pressure to be equalized when resetting the device Once the slam shut device has been tripped it must be manually reset Bulletin 71 2 EZH and EZHSO Specifications The Specifications section lists the specifications for the EZH and EZHSO Series pressure reducing regulators Factory specification is stamped on the nameplate fastened on the regulator at the factory Available Configurations Type EZH Spring to Close Pilot operated pressure reducing regulator for low to high outlet pressure Type EZHSO Spring to Open Pilot operated pressure
11. the actuator diaphragm and on Type PRX escapes downstream through the bleed restriction in the pilot When the gas demand in the downstream system has been satisfied the outlet pressure increases The increased pressure is transmitted through the downstream control line and acts under the lower pilot diaphragm This pressure exceeds the pilot spring setting and moves the Type PRX lower diaphragm closing the orifice and interrupting the loading pressure supply to the lower chamber of the regulator actuator diaphragm The excess loading pressure acting under the regulator actuator diaphragm and on the Type PRX lower pilot bleeds to the downstream system through a bleed restriction in the pilot A check valve set at 75 psi 5 2 bar is installed between outlet pressure and loading pressure impulse lines this valve will protect the main valve diaphragm assembly from excessive differential pressure during startup if incorrect start up procedures are used Do not exceed 75 psi 5 2 bar differential pressure between the outlet pressure and loading pressure impulse lines Type EZHSO Spring To Open Version Type EZHSO Single Pilot Regulator The pilot operated Type EZHSO Spring to Open version will fail in open position in the case of main valve diaphragm failure or lack of supply pressure to the pilot see Table 4 for Failure Mode Analyses Bulletin 71 2 EZH and EZHSO E0873 HE INLET PRESSURE LOADING PRESSURE AN PILOT SUPPL
12. to 24 1 1100 75 8 500 34 5 770 20 6 3079 82 5 6149 165 9844 264 609 42 0 735 19 7 2934 78 6 5827 156 9432 253 Up to 350 Up to 24 1 871 23 3 3500 93 8 7061 189 11 084 297 1200 82 7 500 34 5 849 22 8 3401 91 1 6807 182 10 894 292 609 42 0 821 22 0 3279 87 9 6530 175 10 515 282 Up to 350 Up to 24 1 945 25 3 3800 102 7678 206 12 018 322 1300 89 6 500 34 5 927 24 8 3716 99 6 7454 200 11 833 317 609 42 0 903 24 2 3613 96 8 7210 193 11 559 310 Up to 350 Up to 24 1 1019 27 3 4099 110 8292 222 12 946 347 1400 96 5 500 34 5 1004 26 9 4027 108 8091 217 12 802 343 609 42 0 984 26 4 3938 105 7874 211 12 575 337 Up to 350 Up to 24 1 1078 28 9 4337 116 8781 235 13 685 367 1480 102 500 34 5 1065 28 5 4273 115 8596 230 13 568 364 609 42 0 1047 28 1 4193 112 8397 225 13 372 358 Table 20 Capacities for Types EZHOSX and EZHSO OSX with PRX AP Series Pilot and Type SA 2 Pilot Supply Filter Regulator INLET PRESSURE OUTLET PRESSURE CAPACITIES IN THOUSANDS OF SCFH Nm h OF 0 6 SPECIFIC GRAVITY NATURAL GAS USING 1 1 LINE SIZE TO BODY SIZE PIPING NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 7 DN 100 psig bar psig bar SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h 250 17 2 348 9 3 1389 37 2 2766 74 1 4454 119 500 34 5 300 20 7 328 8 8 1308 35 1 2589 69 4 4215 113 400 27 6 257 6 9 1021 27 4 2001 53 6 3323 89 1 250 17 2 429 11 5 1717 46 0 3436 92 1 5480 147
13. 11 800 55 2 833 22 3 3319 88 9 6568 176 10 702 287 1160 80 0 509 13 6 2017 54 1 3934 105 6591 177 Up to 500 Up to 34 5 1004 26 9 4027 108 8091 217 12 802 343 1400 96 5 600 41 4 986 26 4 3946 106 7895 212 12 598 338 800 55 2 924 24 8 3686 98 8 7312 196 11 858 318 1160 80 0 669 18 0 2655 71 2 5195 139 8651 232 Up to 500 Up to 34 5 1065 28 5 4273 115 8596 230 13 568 364 1480 102 600 41 4 1049 28 1 4201 113 8416 226 13 392 359 800 55 2 994 26 6 3968 106 7887 211 12 746 342 1160 80 0 776 20 8 3082 82 6 6045 162 10 021 269 23 Bulletin 71 2 EZH and EZHSO c INDICATOR COVER REMOVAL CLEARANCE A A A R a TRIM REMOVAL O CLEARANCE mem mo or m Q G 3 F C D i A RES FIS Yy a t a A 2 p INCH mm GE01592_A t A Figure 12 Types EZH and EZHSO Dimensions Table 21 Dimensions DIMENSIONS Inch mm BODY A F R tga NPT CL600RF c D E G H J or CL150 RF CL300 RF or Maximum Type PRX Type PRX AP Type PRX Type PRX AP SWE BWE 8 25 7 25 7 75 8 25 1 50 7 50 11 30 11 10 5 10 8 25 1125 530 184 497 10 98 1 210 53 730 987 13 05 331 282 130 210 1680 427 18 55 471 11 3 10 0 10 50 11 30 1 50 11 25 13 00 11 30 6 50 7 75 2 50 257 254 267 287 33 1 310 79
14. 112 6958 187 Up to 500 Up to 34 5 1011 27 1 4098 110 8660 232 13 088 351 1400 96 5 600 41 4 993 26 6 4029 108 8444 226 12 942 347 i 800 55 2 930 25 0 3785 101 7812 209 12 294 330 1160 80 0 674 18 1 2753 73 8 5540 148 9102 244 Up to 500 Up to 34 5 1072 28 7 4344 116 9201 247 13 852 372 1480 102 600 41 4 1056 28 3 4284 115 9004 241 13 737 369 800 55 2 1001 26 8 4070 109 8428 226 13 188 354 1160 80 0 782 21 0 3191 85 5 6447 173 10 518 282 21 Bulletin 71 2 EZH and EZHSO Table 19 Capacities for Types EZHOSX and EZHSO OSX with PRX Series Pilot and Type SA 2 Pilot Supply Filter Regulator CAPACITIES IN THOUSANDS OF SCFH Nm h OF 0 6 SPECIFIC GRAVITY NATURAL GAS INLET PRESSURE OUTLET PRESSURE USING 1 1 LINE SIZE TO BODY SIZE PIPING NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 DN 100 psig bar psig bar SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h 30 2 1 15 1 0 27 0 7 108 2 9 214 5 7 351 9 4 40 28 15 1 0 36 0 9 145 3 9 289 7 467 12 5 i 25 47 31 0 8 124 3 5 244 6 5 401 10 8 15 1 0 45 1 2 179 4 8 357 9 5 572 15 4 50 3 6 25 1 7 41 1 1 164 4 4 325 8 7 529 14 2 35 2 4 35 0 9 138 3 6 270 7 2 447 12 0 Up to 16 Up to 1 1 52 1 4 210 5 6 421 11 2 669 18 0 60 41 20 1 3 52 1 4 206 5 5 412 11 0 659 17 7 30 2 0 48 1 2 192 5 1 380 10 1 617 16 6 45 3 1 38 1 0 150 4 0 294 7 9 489 13 1 Up to 22 Up to 1 5 63 4 7 252 6 7 505 13 5
15. 19 38 0 2834 76 0 4539 122 300 20 7 328 8 8 1308 35 1 2589 69 4 4215 113 400 27 6 257 6 9 1021 27 4 2001 53 6 3323 89 2 Up to 237 Up to 16 3 431 11 6 1729 46 3 3463 92 8 5510 148 600 At 300 20 7 416 11 1 1661 44 5 3307 88 6 5326 143 375 25 9 385 10 3 1534 41 1 3033 81 3 4949 133 450 31 0 335 9 0 1333 35 7 2618 70 2 4328 116 Up to 278 Up to 19 2 502 13 5 2010 53 9 4027 108 6406 172 700 48 3 350 24 1 484 13 0 1933 51 8 3849 103 6196 166 400 27 6 465 12 5 1857 49 8 3683 98 7 5975 160 600 41 4 312 8 4 1236 33 1 2415 64 7 4034 108 Up to 350 Up to 24 1 565 15 1 2262 60 6 4522 121 7227 194 800 55 2 450 31 0 534 14 3 2130 57 1 4227 113 6851 184 609 42 0 438 11 7 1740 46 6 3416 91 5 5652 151 Up to 350 Up to 24 1 644 17 3 2580 69 1 5173 139 8220 220 900 62 1 500 34 5 602 16 1 2403 64 4 4771 128 7726 207 609 42 0 548 14 7 2181 58 5 4301 115 7055 189 Up to 350 Up to 24 1 721 19 3 2891 77 5 5811 156 9189 246 1000 69 0 500 34 5 688 18 4 2748 73 6 5473 146 8808 236 609 42 0 645 17 3 2571 69 0 5091 136 8290 222 continued 22 Table 19 Capacities for Types EZHOSX and EZHSO OSX with PRX Series Pilot and Type SA 2 Pilot Supply Filter Regulator continued Bulletin 71 2 EZH and EZHSO INLET PRESSURE OUTLET PRESSURE CAPACITIES IN THOUSANDS OF SCFH Nm h OF 0 6 SPECIFIC GRAVITY NATURAL GAS USING 1 1 LINE SIZE TO BODY SIZE PIPING NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 7 DN 100 Up to 350 Up
16. 290 20 0 CL300 RF 750 51 7 CL600 RF or BWE 1500 103 NPT or SWE 1500 103 2 50 CL150 RF 290 20 0 CL300 RF 750 51 7 LCC or WCC Steel CL600 RF or BWE 1500 103 CL150 RF 290 20 0 3 80 CL300 RF 750 51 7 CL600 RF or BWE 1500 103 CL150 RF 290 20 0 4 100 CL300 RF 750 51 7 CL600 RF or BWE 1500 103 Table 2 Outlet Pressure Ranges OUTLET PRESSURE AC ACCURACY CLASS PILOT CONTROL SPRING INFORMATION TYPE RANGE psig bar Type EZH Type EZHSO Spring Color Part Number 14 5 to 26 1 00 to 1 8 2 5 2 5 Yellow M0255240X12 23 to 44 1 6 to 3 0 2 5 2 5 Green M0255230X12 41 to 80 2 8 to 5 5 2 5 2 5 Blue M0255180X12 PRX 120 73 to 123 5 0 to 8 5 2 5 2 5 Black M0255220X12 PRX 125 116 to 210 8 0 to 14 5 1 2 5 Silver M0255210X12 203 to 334 14 0 to 23 0 1 2 5 Gold M0255200X12 319 to 435 22 0 to 30 0 1 2 5 Aluminum M0255860X12 PRX 120 AP PRX 125 AP 435 to 1160 30 0 to 80 0 1 2 5 Clear M0273790X12 Table 3 Minimum Differential Pressures MAIN VALVE BODY SIZE MINIMUM DIFFERENTIAL TYPE For 90 Capacity For 100 Capacity NPS DN psid bar d psid bar d 1 25 15 2 11 15 7 1 1 2 50 12 0 0 83 13 8 0 95 EZH 3 80 10 6 0 73 12 8 0 88 4 100 15 8 TA 16 4 1 1 1 25 55 3 8 55 3 8 2 50 55 3 8 55 3 8 EZHSO 3 80 55 3 8 55 3 8 4 100 55 3 8 55 3 8 1 When using a Type SA 2 pilot supply filter regulator the differential pressure across the regulator must be a least 45 psid 3 1 bar d for
17. 3 30 735 17 62 41 71 747 19 57 38 17 100 5158 138 37 29 4571 149 30 77 3 80 80 4108 113 36 24 3426 101 33 89 50 2652 66 14 40 10 2152 56 94 37 79 30 1591 38 17 41 68 1393 41 40 33 65 100 7470 234 31 6 7390 236 31 4 4 400 80 5920 170 34 8 5800 170 34 2 50 3620 98 8 36 7 3560 98 4 36 3 30 2190 58 4 37 3 2140 57 9 37 3 Table 9 Types EZH and EZHSO Main Valve with Standard Cage IEC Sizing Coefficients 2 1 LINE SIZE TO BODY SIZE PIPING FL 0 89 MAIN VALVE BODY SIZE TRIM OF LINE SIZE EQUALS BODY SIZE NPS DN CAPACITY X Fp 100 0 61 0 61 80 0 72 0 67 d 23 50 0 69 0 80 30 0 66 0 81 100 0 73 0 59 80 0 84 0 68 2 30 50 0 97 0 69 30 0 99 0 70 100 0 88 0 58 80 0 83 0 71 3 ee 50 0 99 0 73 30 0 99 0 72 100 0 63 0 63 80 0 76 0 74 4 199 50 0 85 0 77 30 0 88 0 78 Xr Fp 0 80 0 59 0 95 0 63 0 99 0 69 0 97 0 71 0 69 0 61 0 72 0 70 0 84 0 72 0 92 0 74 0 60 0 60 0 73 0 67 0 90 0 68 0 72 0 75 0 62 0 63 0 74 0 74 0 83 0 77 0 88 0 77 FL 16 Bulletin 71 2 EZH and EZHSO Table 10 Types EZHOSX and EZHSO OSX Main Valve with Standard Cage Regulating Flow Coefficients Bony ei TRIM OF LINE SIZE EQUALS BODY SIZE 2 1 LINE SIZE TO BODY SIZE PIPING NPS DN CAPACUNY Cg Cy c Co Cy C1 100 560 16 3 34 4 550 17 6 31 3 i 55 80 428 12 0 35 7 408 11 9 34 3 50 282 8 3 33 9 245 7 3 33 6 30 171 5 3 32 3 154
18. 3011 80 7 6226 167 9769 262 Up to 350 Up to 24 1 877 24 0 3551 95 2 7562 203 11 281 302 1200 82 7 500 34 5 855 23 0 3470 93 0 7282 195 11 137 298 609 42 0 827 22 2 3359 90 0 6980 187 10 859 291 Up to 350 Up to 24 1 952 26 0 3852 103 8224 220 12 211 327 1300 89 6 500 34 5 934 25 0 3786 101 7976 214 12 121 325 609 42 0 910 24 4 3694 99 0 7709 207 11 906 319 Up to 350 Up to 24 1 1026 27 5 4151 111 8883 238 13 140 352 1400 96 5 500 34 5 1011 27 1 4098 110 8660 232 13 088 351 609 42 0 991 26 6 4021 108 8422 226 12 924 346 Up to 350 Up to 24 1 1085 29 1 4388 118 9408 252 13 883 372 1480 102 500 34 5 1072 28 7 4344 116 9201 247 13 852 371 609 42 0 1054 28 2 4277 115 8983 241 13 722 368 20 Bulletin 71 2 EZH and EZHSO Table 18 Capacities for Types EZH and EZHSO with PRX AP Series Pilot and Type SA 2 Pilot Supply Filter Regulator INLET PRESSURE OUTLET PRESSURE CAPACITIES IN THOUSANDS OF SCFH Nm h OF 0 6 SPECIFIC GRAVITY NATURAL GAS USING 1 1 LINE SIZE TO BODY SIZE PIPING NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 7 DN 100 psig bar psig bar SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h 250 17 2 350 9 4 1423 38 1 2956 79 2 4600 123 500 34 5 300 20 7 330 8 8 1345 36 0 2765 74 1 4379 117 400 27 6 259 7 0 1058 28 4 2134 57 2 3492 93 6 250 17 2 432 11 6 1752 47 0 3675 98 5 5628 151 600 41 4 350 24 1 400 10 7 1626 43 6 3351 89 8 5289 142 500 34 5 288 Tt 1176 31 5 2
19. 364 63 4 3889 104 250 17 2 510 13 7 2068 55 4 4366 117 6607 177 700 48 3 300 20 7 501 13 4 2032 54 5 4256 114 6530 175 400 27 6 469 12 6 1907 51 1 3934 105 6196 166 550 37 9 371 10 0 1514 40 6 3058 82 0 4992 134 Up to 300 Up to 20 7 579 15 5 2349 63 0 4951 133 7517 202 800 55 2 400 27 6 556 14 9 2257 60 5 4693 126 7295 196 i 500 34 5 515 13 8 2096 56 2 4301 115 6835 184 650 44 8 401 10 7 1639 44 0 3302 88 5 5414 145 Up to 350 Up to 24 1 649 17 4 2630 70 5 5535 148 8424 226 900 62 1 400 27 6 638 E 2589 69 4 5416 145 8331 224 600 41 4 557 15 0 2271 60 9 4641 124 7428 199 800 55 2 361 9 7 1475 39 5 2952 79 1 4897 131 Up to 400 Up to 27 6 718 19 2 2910 78 0 6118 164 9330 250 4000 69 0 500 34 5 693 18 6 2814 75 4 5851 157 9092 244 600 41 4 654 17 5 2662 71 3 5477 147 8665 232 800 55 2 514 13 8 2097 56 2 4231 113 6922 186 Up to 450 Up to 31 0 786 241 1 3190 85 5 6700 180 10 234 275 1100 75 8 600 41 4 744 20 0 3025 81 1 6259 168 9807 263 s 800 55 2 635 17 0 2589 69 4 5261 141 8504 228 1000 68 9 402 10 8 1646 44 1 3287 88 1 5469 147 Up to 500 Up to 34 5 855 23 0 3470 93 0 7282 195 11 137 299 1200 82 7 600 41 4 829 22 2 3370 90 3 7008 188 10 888 292 800 55 2 741 19 9 3020 80 9 6172 165 9876 265 1100 75 8 422 11 3 1724 46 2 3442 92 2 5734 154 Up to 500 Up to 34 5 934 25 0 3786 101 7976 214 12 121 325 4300 89 6 600 41 4 912 24 4 3704 99 3 7735 207 11 930 320 i 800 55 2 839 22 5 3414 91 5 7014 188 11 125 298 1160 80 0 513 13 7 2096 56 2 4193
20. 4 8 32 1 100 2259 53 5 42 3 2092 54 6 38 3 j s 80 1837 52 0 35 4 1762 50 0 35 3 50 1297 32 9 39 4 1301 33 5 38 80 30 746 17 9 41 7 746 18 3 40 80 100 4620 125 37 0 4359 142 30 8 3 30 80 3920 106 37 0 3266 96 4 33 9 50 2560 64 9 39 4 2052 54 3 37 80 30 1540 36 8 41 8 1328 39 5 33 6 100 7120 209 34 1 6920 213 32 5 i ido 80 5920 162 36 5 5760 163 35 3 50 3550 93 3 38 0 3420 91 7 37 3 30 2080 56 4 36 9 2060 55 6 37 1 Table 11 Types EZHOSX and EZHSO OSX with Standard Cage Wide Open Flow Coefficients MN E TRIM OF LINE SIZE EQUALS BODY SIZE 2 1 LINE SIZE TO BODY SIZE PIPING NPS DN CARAGIIY Cy Cy C1 Cg Cy C1 100 582 16 95 34 34 572 18 3 31 26 s 80 445 12 48 35 66 424 12 38 34 25 50 293 8 66 33 83 255 7 59 33 60 30 178 5 51 32 30 160 4 99 32 06 100 2349 55 59 42 26 2176 56 75 38 34 5 a 80 1911 54 04 35 36 1832 51 97 35 25 50 1348 34 21 39 40 1352 34 87 38 77 30 776 18 62 41 68 775 19 01 40 77 100 4805 130 36 96 4533 147 30 77 3 66 80 4077 110 36 98 3397 100 33 89 50 2662 67 50 39 44 2134 56 46 37 80 30 1602 38 27 41 86 1381 41 05 33 64 100 7330 215 34 0 7130 219 32 4 Z i 80 6100 167 36 5 5930 168 35 2 50 3660 96 1 38 0 3520 94 5 37 4 30 2140 58 1 36 9 2120 57 3 37 1 Table 12 Types EZHOSX and EZHSO OSX Main Valve with Standard Cage IEC Sizing Coefficients 2 1 LINE SIZE TO BODY SIZE PIPING FL 0 89 MAIN VALVE BODY SIZE TRIM OF
21. 600 41 4 350 24 1 397 10 6 1583 42 4 3137 84 1 5097 137 500 34 5 286 7 7 1133 30 4 2217 59 4 3695 99 0 250 17 2 507 13 6 2031 54 4 4079 109 6460 173 700 48 3 300 20 7 497 13 3 1990 53 4 3979 107 6354 170 400 27 6 465 12 5 1857 49 8 3683 98 7 5975 160 550 37 4 368 9 9 1462 39 2 2867 77 0 4755 127 Up to 300 Up to 20 7 575 15 4 2306 61 8 4627 124 7341 197 800 55 2 400 27 6 552 14 8 2204 59 1 4390 118 7066 189 500 34 5 511 13 7 2036 54 6 4027 108 6571 176 650 44 8 399 10 7 1581 42 4 3097 83 0 5149 138 Up to 350 Up to 24 1 644 17 3 2580 69 1 5173 139 8220 220 900 62 1 400 27 6 633 17 0 2534 68 0 5064 136 8099 217 600 41 4 553 14 8 2203 59 0 4347 117 7123 191 800 55 2 358 9 6 1420 38 1 2770 74 2 4639 124 Up to 400 Up to 27 6 712 19 1 2854 76 5 5719 153 9097 244 4000 69 0 500 34 5 688 18 4 2748 73 6 5473 147 8808 236 600 41 4 649 17 4 2589 69 4 5128 137 8343 224 800 55 2 510 13 7 2025 54 3 3968 106 6589 177 Up to 450 Up to 31 0 781 20 9 3127 83 8 6263 168 9974 267 1100 75 8 600 41 4 739 19 8 2948 79 0 5858 157 9474 254 800 55 2 630 16 9 2506 67 2 4930 132 8128 218 1000 69 0 400 10 7 1582 42 4 3084 82 7 5176 139 Up to 500 Up to 34 5 849 22 8 3401 91 1 6807 182 10 849 291 1200 82 7 600 41 4 824 22 1 3291 88 2 6556 176 10 549 283 800 55 2 736 19 7 2929 78 5 5781 155 9472 254 1100 75 8 419 11 2 1658 44 4 3230 86 6 5424 145 Up to 500 Up to 34 5 927 24 8 3716 99 6 7454 200 11 833 317 1300 89 6 600 41 4 906 24 3 3623 97 1 7233 194 11 587 3
22. 68 53 0 37 1 0 97 0 02 0 86 0 02 30 1397 33 9 41 2 1409 36 1 39 0 0 99 0 02 0 96 0 02 100 5650 172 32 9 5480 173 31 6 0 68 0 02 0 63 0 02 ij 460 80 5110 148 34 2 4950 145 34 1 0 74 0 02 0 73 0 02 50 3370 92 6 36 3 3290 89 7 36 8 0 83 0 01 0 86 0 01 30 2100 56 0 37 6 2080 55 3 37 6 0 89 0 01 0 90 0 01 FL 0 89 Table 17 Capacities for Types EZH and EZHSO with PRX Series Pilot and Type SA 2 Pilot Supply Filter Regulator CAPACITIES IN THOUSANDS OF SCFH Nm2 h OF 0 6 SPECIFIC GRAVITY NATURAL GAS INLET PRESSURE OUTLET PRESSURE USING 1 1 LINE SIZE TO BODY SIZE PIPING NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 7 DN 100 psig bar psig bar SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h SCFH Nm3 h 30 2A 15 1 0 27 0 7 112 3 0 229 6 1 365 9 8 40 28 15 1 0 37 0 9 149 4 0 309 8 2 483 13 0 25 1 7 31 0 8 128 3 4 260 6 9 420 11 3 15 1 0 45 1 2 183 4 9 382 10 2 588 15 8 50 3 4 25 sey 4 41 1 1 169 4 5 347 9 3 550 14 8 35 2 4 35 0 9 142 3 8 288 7 7 469 12 6 Up to 16 Up to 1 1 53 1 4 214 5 7 450 12 0 687 18 4 60 4 1 20 1 3 52 1 3 211 5 6 440 11 8 678 18 2 7 30 2 0 48 1 33 197 5 3 406 10 8 641 17 2 45 3 1 38 1 0 156 4 2 314 8 4 513 13 8 Up to 22 Up to 1 5 63 1 7 257 6 9 541 14 5 825 22 1 75 52 30 20 61 1 6 250 6 7 520 13 9 806 21 6 40 2 7 58 15 235 6 3 483 12 9 764 20 5 60 4 1 42 1 1 174 4 6 349 9 3 574 15 4 Up to 32 Up to 2 2 81 2 2 329 8
23. 8 692 18 5 1055 28 3 100 69 40 21 79 2 1 322 8 6 672 18 0 1038 27 9 50 3 4 76 2 0 309 8 3 639 17 1 1003 26 9 85 5 8 49 1 3 200 5 3 401 10 7 663 17 8 Up to 43 Up to 2 9 99 2 7 400 10 7 841 22 6 1283 34 4 125 86 50 3 4 97 2 6 394 10 6 824 22 1 1269 34 1 75 5 2 88 24 356 9 5 730 19 6 1163 31 2 110 7 9 55 1 4 224 6 0 447 12 0 742 19 9 Up to 52 Up to 3 5 117 3 1 473 12 7 994 26 6 1515 40 7 150 10 3 75 5 2 110 2 9 449 12 0 929 24 9 1453 39 0 95 6 5 101 2 7 411 11 0 841 22 5 1345 36 1 130 8 9 68 1 8 278 t5 557 14 9 923 24 8 Up to 73 Up to 5 0 152 4 1 616 16 5 1295 34 7 1974 53 0 200 13 8 100 6 9 145 3 9 588 15 8 1219 32 7 1903 511 125 8 6 133 3 6 544 14 6 1113 29 8 1775 47 7 185 12 8 69 1 8 283 7 6 563 15 1 940 25 2 Up to 115 Up to 7 9 222 6 0 902 24 2 1895 50 8 2892 77 6 300 207 150 10 3 213 5 7 866 23 2 1798 48 2 2802 75 2 200 13 8 190 5 1 773 20 7 1579 42 3 2532 67 9 275 19 0 107 2 9 440 11 8 877 23 5 1462 39 2 Up to 155 Up to 10 7 293 7 9 1189 31 9 2500 67 0 3813 102 200 13 8 282 7 6 1145 30 7 2377 63 7 3701 99 3 400 27 6 250 17 2 261 T0 1061 28 4 2176 58 3 3463 92 9 300 20 7 227 6 1 926 24 8 1876 50 3 3047 81 8 350 24 1 171 4 6 698 18 7 1399 37 5 2316 62 2 continued 19 Bulletin 71 2 EZH and EZHSO Table 17 Capacities for Types EZH and EZHSO with PRX Series Pilot and Type SA 2 Pilot Supply Filter Regulator continued CAPACITIES IN THOUSANDS OF SCFH Nm h OF 0 6 SPECIFIC GRAVITY NATURAL GAS USING 1 1
24. Bulletin 71 2 EZH and EZHSO EZH and EZHSO Series Pressure Reducing Regulators W8480 Figure 1 Type EZH Pressure Reducing Regulator 1500 psig 103 bar Inlet Outlet Rating No Atmospheric Bleed e Common Body Platform Bubble Tight Shutoff In Line Maintenance Long Life in Severe Service Applications NPS 1 through 4 DN 25 through 100 Body Sizes Available Spring to Close and Spring to Open Versions April 2014 e Integral Slam Shut Configurations Available e Full Usable Capacity e Precise Pressure Control e High Turn Down Capability Optional Whisper Trim Cage Noise Abatement Up to 8 dBA e Integral Slam Shut for Overpressure and Underpressure Protection www fisherregulators com EMERSON Process Management D103081X012 Bulletin 71 2 EZH and EZHSO Features Long Life in Severe Service Applications The EZH and EZHSO Series utilize a metal plug design to deflect particles and debris away from the soft seat which gives enhanced resistance to particle erosion to provide a longer service life In addition the EZH and EZHSO Series can be constructed with Fluorocarbon FKM soft parts to extend service life in applications where liquid aromatics are entrained in the gas Main Diaphragm The main diaphragm is Nitrile NBR reinforced with fabric and coated with a PVC which protects and extends the service life of the regulator in applications where the
25. Pilot Supply Filter Regulator The Type SA 2 pilot supply filter regulator provides a constant supply pressure to the PRX Series pilot that is approximately 45 psig 3 1 bar over set pressure The Type SA 2 has an integral 5 micron filter Principle of Operation Type EZH Spring To Close Version Type EZH Single Pilot Regulator The pilot operated Type EZH Spring to Close Version will fail in close position in the case of main valve diaphragm failure or lack of supply pressure to the pilot see Table 4 for Failure Mode Analyses The pilot operated Type EZH Spring to Close Version Figure 2 uses inlet pressure as the operating medium which is reduced through pilot operation to load the regulator actuator diaphragm lower chamber Outlet or downstream pressure opposes loading pressure in the actuator and also opposes the pilot control spring Pilot is supplied with pressure coming from pre regulator Type SA 2 which reduces inlet pressure to the constant value of outlet pressure plus approximately 45 psi 3 1 bar When outlet pressure drops below the setting of the pilot control spring pilot control spring force on the pilot lower diaphragm opens the pilot valve disk providing additional loading pressure to the lower chamber of the regulator actuator diaphragm This diaphragm loading pressure opens the main valve disk supplying the required flow to the downstream system Any excess loading pressure in the lower chamber of
26. Types EZHOSX and EZHSO OSX Only LCC Steel CL150 RF CL300 RF CL600 RF 26 on the following page Specify the desired selection wherever there is a choice to be made Then send the Ordering Guide to your local Sales Office Main Valve Disk Material Select One O Nitrile NBR standard O Fluorocarbon FKM O Polyurethane PU Pilot Type Select One Type PRX 120 Type PRX 120 AP O Type PRX 125 monitor override pilot O Type PRX 125 AP monitor override pilot Outlet Pressure Range Select One Type PRX 120 or PRX 125 O 14 5 to 26 psig 1 00 to 1 8 bar Yellow O 23 to 44 psig 1 6 to 3 0 bar Green O 41 to 80 psig 2 8 to 5 5 bar Blue O 73 to 123 psig 5 0 to 8 5 bar Black LI 116 to 210 psig 8 0 to 14 5 bar Silver O 203 to 334 psig 14 0 to 23 0 bar Gold O 319 to 435 psig 22 0 to 30 0 bar Aluminum Type PRX 120 AP or PRX 125 AP O 435 to 1160 psig 30 0 to 80 0 bar Clear Whisper Trim Cage Construction Optional Not available to NPS 1 DN 25 Body Size Yes Type SA 2 Elastomer Material Select One O Nitrile NBR standard O Fluorocarbon FKM Pilot Elastomer Material Select One Nitrile NBR Polyurethane PU standard Fluorocarbon FKM Travel Indicator Select One Y
27. URE LOADING PRESSURE MECHANISM BOX AMG PILOT SUPPLY PRESSURE m OUTLET PRESSURE 55 ATMOSPHERIC PRESSURE Figure 6 Type EZHOSX Operational Schematic Noise Abatement Trim Whisper Trim cage provides effective attenuation of aerodynamic noise in gas applications involving high pressure drop ratios Aerodynamic noise is generated by the turbulence created in the flow of gas as the fluid passes through the port To achieve effective noise attenuation a Whisper Trim cage utilizes multiple orifices of special shape size and spacing These orifices break up turbulent fluid streams reducing noise producing interactions EZH and EZHSO Series with NPS 2 to 4 DN 50 to 100 body sizes offer an optional Whisper Trim Cage to reduce noise by up to 8 dBA See Figure 7 for Noise Level Comparisons Slam Shut Device Principle of Operation The slam shut device on Types EZHOSX Figure 6 and EZHSO OSX can provide either overpressure OPSO or overpressure and underpressure OPSO UPSO protection by completely shutting off the flow of gas to the downstream system The slam shut has a mechanism box and a manometric device The manometric device is composed of spring and diaphragm actuator Its movement activates the detection stage of the mechanism box The shutoff is a two stage process the detection stage and the power stage This separation between d
28. Valve Main Valve Body Types EZH and EZHSO WCC Steel Types EZHOSX and EZHSO OSX LCC Steel Intermediate Flange and Actuator Casings Steel ASTM A350 LF2 Diaphragm Plates Steel ASTM A105 Diaphragm Nitrile NBR with PVC coating O ring Fluorocarbon FKM Disk Nitrile NBR Fluorocarbon FKM or Polyurethane PU PRX Series Pilots Body Steel ASTM 105 Trim Stainless steel Elastomers Nitrile NBR or Fluorocarbon FKM Disk Polyurethane PU or Fluorocarbon FKM Type SA 2 Pilot Supply Filter Regulator Body Steel Diaphragm Nitrile NBR with PVC coating O ring Disk Nitrile NBR or Fluorocarbon FKM Type OS2 Slam Shut Device Mechanism Box Aluminum alloy First and Second Stage Mechanism WCC Steel Diaphragm Nitrile NBR Bellows 316 Stainless steel Approximate Weights See Table 22 1 The pressure temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded 2 Types PRX and SA 2 Fluorocarbon FKM elastomer is limited to 0 F 18 C 3 Maximum Operating Differential Pressure is 1400 psid 96 5 bar d for NPS 1 DN 25 Type EZHSO Bulletin 71 2 EZH and EZHSO Table 1 Main Valve Body Sizes End Connection Styles and Body Ratings MAIN VALVE BODY SIZE STRUCTURAL DESIGN RATING MAIN VALVE BODY MATERIAL END CONNECTION STYLE NPS DN psig bar NPT or SWE 1500 103 4 25 CL150 RF
29. Y PRESSURE EGG OUTLET PRESSURE ATMOSPHERIC PRESSURE PILOT BLEED RESTRICTION v FILTER R pS M D CHECK VALVE 4 TYPE PRX TYPE SA 2 S BLEED PORT V SENSING PORT B SUPPLY PORT R PILOT SUPPLY PORT L LOADING PORT A SENSING PORT M INLET PORT Figure 2 Type EZH Spring to Close Version Operational Schematic PILOT BLEED RESTRICTION PILOT DISK TYPE PRX 120 M1011 Ms INLET PRESSURE LOADING PRESSURE J PILOT SUPPLY PRESSURE E OUTLET PRESSURE ATMOSPHERIC PRESSURE TYPE PRX S BLEED PORT B SUPPLY PORT L LOADING PORT A SENSING PORT TYPE EZHSO TYPE SA 2 V SENSING PORT R PILOT SUPPLY PORT M INLET PORT Figure 3 Type EZHSO Spring to Open Version Operational Schematic TYPE EZH PILOT CONTROL SPRING TYPE PRX PILOT UPPER DIAPHRAGM Ih S PILOT DISK PILOT LOWER DIAPHRAGM REGULATOR ACTUATOR n DIAPHRAGM MAIN VALVE DISK PLUG REGULATOR ACTUATOR DIAPHRAGM MAIN VALVE DISK PLUG Table 4 Failure Mode Analyses Bulletin 71 2 EZH and EZHSO PART NAME CONDITION CAUSE EFFECT REGULATOR TYPE REGULATOR REACTION MODE Decrease of supply EZHSO Open ayaa Filter Filter blocked Debris or aromatics pressure gives Clog
30. Y SIZE M N Diaphragm Piston Diaphragm Piston Bellows NPS DN Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm 1 25 12 0 305 9 8 249 6 4 163 2 50 13 0 330 10 4 264 3 80 14 4 366 11 8 300 6 38 162 4 100 16 8 427 13 6 346 2 8 71 6 9 175 8 0 203 8 8 224 6 89 175 8 03 204 8 78 223 1 Type 71 BMS with a diaphragm has an M dimension of 2 80 inches 71 mm 25 Bulletin 71 2 EZH and EZHSO Ordering Information Use the Specifications section on page 3 and carefully review the description to the right of each specification Use this information to complete the Ordering Guide Ordering Guide Type and Body Material Select One WCC Steel O Type EZH Spring to Close Version O Type EZHSO Spring to Open Version LCC Steel Type EZHOSX Spring to Close Version with Slam shut Type EZHSO OSX Spring to Open Version with Slam shut Body Size Select One NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 DN 100 End Connection Styles Select One Types EZH and EZHSO Only WCC Steel NPT available for NPS 1 and 2 DN 25 and 50 Body Sizes only CL150 RF CL300 RF CL600 RF SWE Available for NPS 1 and 2 DN 25 and 50 Body Sizes only O BWE PN 16 40 For NPS 1 and 2 DN 25 and 50 Body Sizes only PN 25 40 For NPS 3 DN 80 Body Size only
31. ctors provided above if necessary Critical Pressure Drops For critical pressure drops absolute outlet pressure equal to or less than one half of absolute inlet pressure use the following formula Q P4 Cg 1 29 Non Critical Pressure Drops For pressure drops lower than critical absolute outlet pressure greater than one half of absolute inlet pressure 520 3417 JAP a 2 c PisiN 2 DEG GT Cy P4 where Q gas flow rate SCFH P4 absolute inlet pressure psia P4 gauge 14 7 Cg regulating or wide open gas sizing coefficient G gas specific gravity of the gas T absolute temperature of gas at inlet Rankine C1 flow coefficient AP pressure drop across the regulator psi Bulletin 71 2 EZH and EZHSO PILOT SUPPLY FILTER A BLOCK VALVE Ni s fee LINE BLOCK VALVE x HAND VALVE m N E0953 SLAM SHUT DEVICE ff e CONTROL LINE 11A Overpressure and Underpressure Shutoff Using One Manometric Device This Application May Require Two Manometric Devices as Shown in Figure 11C me HAND VALVE oteae CONTROL LINE PILOT
32. ensing the downstream and control pressure goes into operation to maintain the downstream pressure at a slightly higher value than normal set pressure During an overpressure situation monitoring keeps the customer on line Also testing is relatively easy To perform a periodic test on a monitoring regulator increase the outlet set pressure of the working regulator and watch the outlet pressure gauge to determine if the monitoring regulator takes over at the appropriate outlet pressure Bulletin 71 2 EZH and EZHSO v R M TYPE SA 2 CHECK VALVE TYPE EZH M1164 E INLET PRESSURE Be LOADING PRESSURE PILOT SUPPLY PRESSURE m OUTLET PRESSURE ATMOSPHERIC PRESSURE TYPE PRX S BLEED PORT B SUPPLY PORT L LOADING PORT A SENSING PORT TYPE SA 2 V SENSING PORT estescetaratara M INLET PORT Figure 4 Wide Open Monitoring System Operational Schematic Wide Open Monitoring Systems Figure 4 There are two types of wide open monitoring systems upstream and downstream The difference between upstream and downstream monitoring is that the functions of the regulators are reversed Systems can be changed from upstream to downstream monitoring and vice versa by simply reversing the setpoints of the two regulators The decision to use either an upstream or downstream monitoring system is largely a matter of personal preference or company policy In normal operation of a wide open confi
33. es No continued Bulletin 71 2 EZH and EZHSO Ordering Guide continued Pre piped Pilot Supply Select One O Yes O No Main Valve Replacement Parts Kit Optional O Yes send one replacement parts kit to match this order Pilot Replacement Parts Kit Optional Yes send one replacement parts kit to match this order Specification Worksheet Application Specific Use Line Size Fluid Type Specific Gravity Temperature Does the Application Require Overpressure Protection Yes No Pressure Maximum Inlet Pressure Minimum Inlet Pressure Differential Pressure Set Pressure Maximum Flow Regulators Quick Order Guide i a ia Readily Available for Shipment ccuracy Requirements Less Than or Equal To Allow Additional Time for Shipment 5 110 O 20 O 40 Special Order Constructed from Non Stocked Parts Consult your local Sales Office for Availability Construction Material Requirements if known Availability of the product being ordered is determined by the component with the longest shipping time for the requested construction 27 Bulletin 71 2 EZH and EZHSO Industrial Regulators Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75070 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Paci
34. etection stage and power stage provides maximum precision alleviating many false trips caused by environmental vibrations The slam shut device includes a bypass valve that will allow pressure to be equalized when resetting the device Once the slam shut device has been tripped it must be manually reset Bulletin 71 2 EZH and EZHSO a5 oamocoamer o e Pe oom pom eaagccccepececece NOISE LEVEL dBA m e e ame e EZH AND EZHSO SERIES WITH STANDARD CAGE eeeceeeecee EZH AND EZHSO SERIES WITH WHISPER TRIM CAGE 0 353 000 706 000 1 060 000 1 400 000 1 760 000 2 100 000 2 470 000 2 800 000 3 178 000 9400 18 900 28 400 37 500 47 100 56 800 66 200 75 700 85 100 FLOW RATE SCFH Nm h Figure 7 Noise Comparison Diagram TYPE BM2 TYPE BM1 TYPE BMS1 TYPE BMS1 RIGHT SIDE TYPE BMS2 LEFT SIDE MECHANISM BOX TYPE BM1 WITH 1 MANOMETRIC MECHANISM BOX TYPE BM2 WITH 2 MANOMETRIC SENSING DEVICES SENSING DEVICE TYPE BMS1 TYPES BMS1 AND BMS2 E0565 E0565 Figure 8 Types of Slam Shut Installation Mounting on Horizontal Pipeline Only 11 Bulletin 71 2 EZH and EZHSO FIRST STAGE RESET PIN WHITE MECHANISM BOX SECOND STAGE RESET SHAFT W8128 Figure 9 Slam Shut Device in Open Position See Figures 9 and 10 for the difference between the device in open and closed positions See Figure 11
35. fic Shanghai 201206 China Tel 86 21 2892 9000 Europe Bologna 40013 Italy Tel 39 051 419 0611 Middle East and Africa Dubai United Arab Emirates Tel 011 971 4811 8100 Natural Gas Technologies Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75070 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Singapore 128461 Singapore Tel 65 6770 8337 Europe Bologna 40013 Italy Tel 39 051 419 0611 Chartres 28008 France Tel 33 2 37 33 47 00 Middle East and Africa Dubai United Arab Emirates Tel 011 971 4811 8100 For further information visit www emersonprocess com regulators TESCOM Emerson Process Management Tescom Corporation USA Headquarters Elk River Minnesota 55330 2445 USA Tels 1 763 241 3238 1 800 447 1250 Europe Selmsdorf 23923 Germany Tel 49 38823 31 287 Asia Pacific Shanghai 201206 China Tel 86 21 2892 9499 The Emerson logo is a trademark and service mark of Emerson Electric Co All other marks are the property of their prospective owners Fisher is a mark owned by Fisher Controls International LLC a business of Emerson Process Management The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or the
36. ged present in the gas decrease of loading pressure EZH Close Pilot disk Pilot cannot be Debris or aromatics Increase loading EZHSO Open J closed present Sour gas pressure EZH Open S256 Pilot lower Debris or aromatics Decrease loading EZHSO Open nce Pilot cannot control diaphragm present Sour gas pressure EZH eee Close Pilot upper Pilot cannot feed the Debris or aromatics Decrease loading EZHSO Open gues diaphragm regulator present Sour gas pressure EZH Sete Close Balancing of Not proper EZHSO Open A A Pressures and Regulator performance of Debris or aromatics t charge or discharge diaphragm the loading present Sour gas of the loadin pressure chamber 9 EZH ets Close pressure chamber Type SA 2 loading upper casing of EZHSO ERAS Open Frozen pilot f z A Moisture in the gas regulator Pilot Pilot Type SA 2 3 high pressure drop not supplying not working loading pressure to EZH mize o Close lower casing Type EZHSO Figure 3 uses inlet pressure as the operating medium which is reduced through pilot operation to load the regulator actuator diaphragm lower chamber The upper chamber of Type EZHSO actuator and the PRX Series pilot are both supplied with pressure coming from pre regulator Type SA 2 which reduces inlet pressure to the constant value of outlet pressure plus approximately 45 psi 3 1 bar This pressure on the upper chamber of the regulator actuator diaphragm opposes the main spring fo
37. guration the working regulator controls the system s outlet pressure With a higher outlet pressure setting the monitor regulator senses a pressure lower than its setpoint and tries to increase outlet pressure by going wide open If the working regulator fails the monitoring regulator assumes control and holds the outlet pressure at its outlet pressure setting Figure 4 shows an upstream wide open monitor Type EZH fail to close and a downstream active regulator Type EZHSO fail to open In this installation if the Type EZHSO regulator no longer controls downstream pressure it will remain open letting the Type EZH monitor regulator take control of the downstream pressure Should the Type EZH fail the monitor regulator will close and protect the downstream system from overpressure condition TYPE PRX CHECK VALVE R PILOT SUPPLY PORT TYPE PRX TYPE SA 2 R TYPE EZHSO Working Monitoring Regulators Figure 5 In a working monitoring system the upstream regulator requires two pilots and it is always the monitoring regulator The additional pilot permits the monitoring regulator to act as a series regulator to control an intermediate pressure during normal operation In this way both units are always operating and can be easily checked for proper operation In normal operation the working regulator controls the outlet pressure of the system The monitoring regulator s working pilot control
38. ir use or applicability We reserve the right to modify or improve the designs or specifications of such products at any time without notice Emerson Process Management Regulator Technologies Inc does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any Emerson Process Management Regulator Technologies Inc product remains solely with the purchaser EMERSON anagemen Emerson Process Management Regulator Technologies Inc 2003 2014 All Rights Reserved P roces
39. liquids commonly found in natural gas pipelines tend to shorten diaphragm life Common Body Platform The EZH and EZHSO Series use the same standard Fisher E Body which is also used in Type EZR pressure reducing regulator and Types EZ ES ED and ET pressure reducing control valves This will allow easy conversion from one product to another without the need to remove the E Body from the pipeline Spring to Close and Spring to Open Versions Optional positions to choose from in case of main valve diaphragm failure or lack of supply pressure to the pilot Bubble Tight Shutoff The EZH and EZHSO Series have knife edged metal plug and a soft seat which provide bubble tight shutoff for use in applications where positive shutoff is required For example dead end systems No Atmospheric Bleed The EZH and EZHSO Series eliminate nuisance and wasteful bleed gas to atmosphere by utilizing a pilot operated two path control system which bleeds 100 of the gas to the downstream system while the regulator is operating High Turn Down Capability The oversized diaphragm and unique piloting system of the EZH and EZHSO Series allow for high turn down which will provide superior pressure control in systems with large variations in downstream flow demand In Line Maintenance Top entry design provides easier maintenance Trim parts can be inspected cleaned and replaced without removing the body from pipeline Noise Abatement Tri
40. lls within the maximum range shown in Table 5 2 When using two manometric sensing devices Types BMS1 and BMS2 the Type BMS1 can only be used for high trip 15 Bulletin 71 2 EZH and EZHSO Table 7 Types EZH and EZHSO Main Valve with Standard Cage Regulating Flow Coefficients DYE TRIM OF LINE SIZE EQUALS BODY SIZE 2 1 LINE SIZE TO BODY SIZE PIPING NPS DN CAPAGITY Cg Cy C1 Cg Cy C 100 564 16 3 34 6 544 15 3 35 5 3 a 80 436 12 3 35 4 423 10 9 38 7 50 284 8 4 33 7 249 6 3 39 7 30 172 5 3 32 5 157 4 0 39 1 100 2278 58 5 38 9 2110 62 9 33 5 2 z 80 1719 47 1 36 5 1609 50 5 31 9 50 1213 31 0 39 1 1177 33 0 35 6 30 707 16 9 41 7 718 18 8 38 2 100 4960 133 373 4396 143 30 8 3 ae 80 3950 109 36 2 3294 97 2 33 9 50 2550 63 6 40 1 2069 54 7 37 80 30 1530 36 7 41 7 1339 39 8 33 6 100 7250 227 31 9 7170 229 31 3 4 400 80 5750 165 34 8 5630 165 34 1 50 3510 95 9 36 6 3460 95 5 36 2 30 2130 56 7 37 6 2080 56 2 37 0 Table 8 Types EZH and EZHSO with Standard Cage Wide Open Flow Coefficients pacers TRIM OF LINE SIZE EQUALS BODY SIZE 2 1 LINE SIZE TO BODY SIZE PIPING NPS DN CAPACITY Cg Cy C1 Cg Cy C1 100 587 16 95 34 63 566 15 94 35 51 4 T 80 453 12 79 35 42 440 11 37 38 70 50 295 8 76 33 68 259 6 52 39 72 30 179 5 51 32 49 163 4 16 39 18 100 2369 60 89 38 91 2194 65 44 33 53 P Be 80 1788 48 94 36 53 1673 52 52 31 85 50 1261 32 26 39 09 1224 34 35 35 6
41. m The EZH and EZHSO Series offer an optional Whisper Trim Cage which is integral to the regulator Allows for a noise attenuation of up to 8 dBA e Precise Pressure Control The EZH and EZHSO Series use the PRX Series and Type SA 2 pilot system to provide stable and accurate downstream pressure control regardless of load changes or inlet pressure variations Full Pressure Rating The EZH and EZHSO Series have equal inlet and outlet pressure rating of 1500 psig 103 bar which allows easier selection and requires no special startup or shutdown procedures Full Usable Capacity Fisher brand regulators are laboratory tested 100 of the published flow capacity can be used with confidence Disk Design The EZH and EZHSO Series offer disks for the main body made from Nitrile NBR Fluorocarbon FKM and Polyurethane PU Polyurethane PU provides better abrasion resistance properties and a high durometer rating to extend the working life of the disk in difficult applications where disk erosion is an issue O ring Design The EZH and EZHSO Series use elastomer O rings instead of gaskets reducing maintenance and assembly time Slam Shut Protection Types EZHOSX and EZHSO OSxX discontinue gas service by shutting the gas off if there is an overpressure or underpressure condition Introduction Types EZH Spring to Close version and EZHSO Spring to Open version regulators are accurate pilot operated pressure balanced
42. optimum regulator performance Bulletin 71 2 EZH and EZHSO Pilot Descriptions The EZH and EZHSO Series pressure reducing regulators include a PRX Series pilot mounted on the EZH and EZHSO Series main valves for pressure reducing or monitoring applications PRX Series pressure reducing pilots have the ability to handle a wide range of setpoints from 14 5 to 1160 psig 1 00 to 80 0 bar Type PRX 120 Outlet pressure range of 14 5 to 435 psig 1 00 to 30 0 bar The Type PRX 120 can be used as the pilot on single stage pressure reducing regulators as the monitor pilot or as the working pilot in wide open monitor systems or as the working pilot for monitoring and working regulators in the working monitoring systems Type PRX 120 AP Outlet pressure range of 435 to 1160 psig 30 0 to 80 0 bar The Type PRX 120 AP can be used as the pilot on single stage pressure reducing regulators as the monitor pilot or as the working pilot in wide open monitor systems or as the working pilot for monitoring and working regulators in the working monitoring systems Type PRX 125 Identical to the Type PRX 120 except the restriction screw is removed The Type PRX 125 can only be used as the monitor override pilot on working monitor applications Type PRX 125 AP Identical to the Type PRX 120 AP except the restriction screw is removed The Type PRX 125 AP can only be used as the monitor override pilot on working monitor applications
43. own in Figure 11E Figure 11 Type EZHOSX Installation Schematics continued 14 Table 5 Manometric Device Specifications Bulletin 71 2 EZH and EZHSO MAXIMUM MAXIMUM DIFFERENCE SENSING SETPOINT BETWEEN SPRING RANGE SPRING SPRING NIET MANOMETRIC MANOMETRIC TOLERANCE 1 OVERPRESS RE COLOR PART PRESSURE SENSING SENSING AND NUMBER DEVICE TYPE DEVICE STYLE UNDERPRESSUREA psig bar psig bar psig bar psid bar d 4 02 to 10 to areae aen Purple 14232T0012 0 058 0 004 0 145 0 01 9 97 to 25 to a 332 incheswc 83mbar Orange T14233T0012 0 073 0 005 0 363 0 03 1S ineRESW C i a9 Mban to Red T14234T0012 0 145 0 01 0 725 0 05 to 2 0 psig 0 14 bar 75 5 2 162 1 0t03 5 0 07t00 24 Yellow T14235T0012 0 203 0 014 0 870 0 06 1705 6 0 12t00 39 Green 114236T0012 Diaphragm 0 261 0 02 2 18 0 15 2to 11 0 14100 80 Gray 114238T0012 0 725 0 05 5 08 0 35 4 to 19 0 28 to 1 3 Brown 114239T0012 1 16 0 08 8 70 0 60 7 to 33 0 48t02 3 Black 114240T0012 2 47 0 17 16 0 1 1 15 to 75 1 0 to 5 2 Blue 11423770012 5 08 0 35 36 3 25 31 to 161 2 1t011 1 Brown 714239T0012 235 16 2 71 10 2 0 70 79 8 55 59 to 235 4 110162 Black 114240T0012 23 2 1 6 145 10 0 235 to 323 16 2to22 3 Brown 114239T0012 43 5 3 0 1470 101 27 32310588 22 3t040 5 Black 114240T0012 94 3 6 5 Requires use of 58810808 40 5t0557
44. rce that tends to open the regulator Outlet or downstream pressure opposes the pilot control spring When outlet pressure drops below the setting of the pilot control spring pilot control spring force on the pilot lower diaphragm opens the pilot valve disk providing additional loading pressure to the lower chamber of the Regulator actuator diaphragm This diaphragm loading pressure opens the main valve disk supplying the required flow to the downstream system Any excess loading pressure in the lower chamber of the regulator actuator diaphragm and Type PRX escapes downstream through the bleed restriction in the pilot When outlet pressure increases over the setting of the pilot spring the pilot valve disk will be closed reducing loading pressure to the lower chamber of the regulator actuator diaphragm the pressure in the upper chamber will force the regulator to close A check valve set at 75 psi 5 2 bar is installed between inlet pressure to upper actuator casing and loading pressure impulse lines this valve will protect the main valve diaphragm assembly from incorrect start up procedures avoiding excess high pressure differential between inlet and loading pressure Monitoring Systems Monitoring regulation is overpressure protection by containment therefore there is no relief valve to vent to the atmosphere When the working regulator fails to control the pressure a monitor regulator installed in series which has been s
45. reducing regulator for low to high outlet pressure Type EZHOSX Type EZH with a Type OS2 slam shut device for overpressure OPSO or overpressure and underpressure OPSO UPSO protection Type EZHSO OSX Type EZHSO with a Type OS2 slam shut device for overpressure OPSO or overpressure and underpressure OPSO UPSO protection Body Sizes End Connection Styles and Pressure Ratings 1 See Table 1 Maximum Allowable Pressures 1 Inlet Pressure 1500 psig 103 bar Outlet Casing Pressure 1500 psig 103 bar Emergency Casing Pressure 1500 psig 103 bar Maximum Operating Differential Pressures 1 3 Main Valve 1500 psid 103 bar d Pilot Between loading pressure in pilot and loading sense pressure 1233 psid 85 0 bard Minimum Differential Pressures See Table 3 Outlet Pressure Ranges See Table 2 Flow and Sizing Coefficients See Tables 7 through 16 Flow Capacities See Tables 17 through 20 Pilot and Filter Regulator Flow Coefficients Type PRX Pilot Cg 10 5 Cy 0 36 C1 29 Type SA 2 Filter Regulator Cg 4 9 Pressure Registration External Pilot Connections 1 4 NPT Temperature Capabilities Nitrile NBR Version 20 to 180 F 29 to 82 C Fluorocarbon FKM Version 0 to 180 F 18 to 82 C 2 Polyurethane PU Version 22 to 180 F 30 to 82 C Options e Pre piped Pilot Supply e Travel Indicator e Whisper Trim Cage NPS 2 to 4 DN 50 to 100 Sizes Only Construction Materials Main
46. s in the pipeline Common methods of external overpressure protection include relief valves monitoring regulators shutoff devices and series regulation Types EZHOSX Figure 6 and EZHSO OSX regulators rely on the integrated slam shut device for overpressure OPSO or overpressure and underpressure OPSO UPSO protection In the event that outlet pressure rises above or falls below the pressure setting slam shut will completely shut off the flow of gas to the downstream system V SENSING PORT R PILOT SUPPLY PORT TYPE EZH WORKER REGULATOR Installation The EZH and EZHSO Series may be installed in any position but it is normally installed in a horizontal pipeline with the pilot or pilots above the body The optimal location for the sense and bleed lines is between the regulator and the downstream block valve If the sense and bleed lines cannot be located between the EZH and EZHSO Series and downstream block valve contact your local Sales Office for startup assistance See Figures 2 and 3 for typical piping installations Note To prevent damage to the pilot during startup the sense and bleed lines should be located on the same side of the downstream block valve Bulletin 71 2 EZH and EZHSO NM TYPE SA 2 CHECK VALVE EQUALIZER BYPASS p MANOMETRIC DEVICE STEM MANOMETRIC DEVICE E0939 A TYPE PRX VALVE PLUG VALVE PLUG DISK EE NLET PRESS
47. s the intermediate pressure and the monitoring pilot senses the system s outlet pressure If the working regulator fails the monitoring pilot will sense the increase in outlet pressure and take control Working monitor installations require a Type EZH or EZHSO main valve with a Type PRX 120 or PRX 120 AP working pilot and a Type PRX 125 or PRX 125 AP monitoring pilot for the upstream regulator and a Type EZH or EZHSO with the appropriate Type PRX 120 or PRX 120 AP pilot for the downstream regulator Bulletin 71 2 EZH and EZHSO TYPE EZH MONITOR REGULATOR E0876 INLET PRESSURE LOADING PRESSURE C INTERMEDIATE PRESSURE PILOT SUPPLY PRESSURE EG OUTLET PRESSURE ATMOSPHERIC PRESSURE TYPE PRX S BLEED PORT B SUPPLY PORT L LOADING PORT A SENSING PORT TYPE SA 2 M INLET PORT Figure 5 Working Monitoring System Operational Schematic Overpressure Protection Overpressuring any portion of a regulator or associated equipment may cause personal injury leakage or property damage due to bursting of pressure containing parts or explosion of accumulated gas Provide appropriate pressure relieving or pressure limiting devices to ensure that the limits in the Specifications section are not exceeded Regulator operation within ratings does not prevent the possibility of damage from external sources or from debri
48. ze FL NPS DN Cg Cy C1 Cg Cy C1 Xt Fp Xt Fo 100 1494 39 9 37 4 1516 41 0 37 0 0 89 0 03 0 87 0 03 J n 80 1473 39 3 37 5 1482 39 5 37 5 0 89 0 03 0 89 0 03 50 1171 30 0 39 0 1169 29 6 39 5 0 96 0 02 0 99 0 02 30 721 17 0 42 4 718 18 2 39 4 0 99 0 02 0 98 0 02 100 3472 102 34 1 3285 107 30 8 0 73 0 02 0 59 0 02 3 80 80 2903 80 7 36 0 2751 81 9 33 6 0 82 0 02 0 71 0 02 0 89 50 1918 48 9 39 2 1892 51 0 37 1 0 97 0 01 0 86 0 01 i 30 1344 32 6 41 2 1354 34 7 39 0 0 99 0 01 0 96 0 01 100 5490 167 32 9 5320 168 31 7 0 68 0 02 0 63 0 02 r id 80 4960 144 34 4 4810 141 34 1 0 74 0 02 0 73 0 02 50 3270 89 9 36 4 3190 87 7 36 4 0 83 0 01 0 86 0 01 30 2040 54 4 37 5 2020 53 7 37 6 0 89 0 01 0 90 0 01 18 Table 16 Types EZHOSX and EZHSO OSX Main Valve with Whisper Trim Cage Wide Open Flow and Sizing Coefficients Bulletin 71 2 EZH and EZHSO IEC SIZING COEFFICIENTS MAIN VALVE TRIM LINE SIZE EQUALS 2 1 LINE SIZE TO BODY BODY SIZE OF BODY SIZE SIZE PIPING 1 1 Line to 2 1 Line to CAPACITY Body Size Body Size NPS DN Cg Cy C1 Cg Cy C1 Xt Fp XT Fp 100 1554 41 5 37 4 1577 42 6 37 1 0 89 0 03 0 87 0 03 2 ea 80 1532 40 9 37 5 1542 41 1 37 5 0 89 0 03 0 89 0 03 50 1218 31 2 39 0 1216 30 8 39 4 0 96 0 02 0 99 0 02 30 750 177 42 3 747 19 0 39 3 0 99 0 02 0 98 0 02 100 3611 106 34 1 3416 111 30 7 0 73 0 03 0 59 0 03 3 Pe 80 3020 84 0 35 9 2861 85 2 33 6 0 82 0 03 0 71 0 03 50 1994 50 9 39 1 19
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