Emerson 92S Data Sheet
Contents
1. 15 Bulletin 71 2 92S Industrial Regulators Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75069 1872 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific 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 971 4811 8100 Natural Gas Technologies Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75069 1872 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 Gallardon 28320 France Tel 33 2 37 33 47 00 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 For further information visit www fisherregulators com 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 be2. 6 000 2 722 9 000 4 082 5800 8920 11 000 2 631 4 046 4 990 5 800 9 200 11 500 2 631 4 173 5 216 1 800 2 350 2 150 816 1066 975 3 300 4 500 5 100 1 497 2 041 2 313 5 600 2 540 8 600 3 901 10 700 4 854 8 000 3 629 12 000 5 443 17 000 7 711 9 200 4 173 16 300 19 600 7 394 8 891 17 100 20 200 7 757 9 163 6492L 6492H or 6492HT 710 1 040 1 440 322 472 653 1 300 1 800 2 650 590 816 1 202 2 100 953 2 300 11 043 3 200 1 452 2 950 1 338 4 550 2 064 6 200 2 812 4 300 1 950 6 300 2 858 8 900 4 037 4600 7700 11 900 2 087 3 493 5 398 4 600 8 100 12 200 2 087 3 674 5 534 1 820 2 600 3 400 826 1179 1542 3 400 4 800 6 200 1 542 2 177 2 812 5 450 2 472 8 100 3 674 11 800 5 352 7 800 3 538 12 100 5 489 16 900 7 666 10 200 4 627 16 100 23 100 7 303 10 478 16 800 23 800 7 620 10 796 20 1 4 6492L 6492H or 6492HT 1 040 1 440 1 820 2 650 3 450 472 653 826 1202 1565 1 800 2 700 3 450 4 900 6 400 816 1 225 1 565 2 223 2 903 2 950 1 338 4 590 2 082 6 250 2 835 4 300 1 950 6 450 2 926 9 100 4 128 5 450 2 472 8 650 3 924 11 900 5 398 7 950 3 606 12 300 5 579 17 150 7 779 10 300 4 672 7 570 11 000 16 200 23 500 3 434 4 990 7 348 10 660 7 700 11 800 16 900 24 100 3 493
3. 119 22 100 10 025 12 900 5 851 10 800 16 100 23 100 30 100 4 899 7 303 10 478 13 653 11 500 17 000 24 000 31 000 5 216 7 711 10 886 14 062 60 4 1 6492H 6492HT 1 365 1 780 2 650 3 450 4 300 619 807 1202 1565 1950 2 300 3 100 4 900 6 500 8 000 1 043 1 406 2 223 2 948 3 629 4 080 1 851 5 500 2 495 7 700 3 493 5 300 2 404 7 880 3 574 10 600 4 808 7 950 3 606 12 300 5 579 16 750 7 598 10 300 4 672 16 400 7 439 22 450 10 183 12 900 5 851 10 500 14 200 22 700 30 200 4763 6 441 10 297 13 699 11 000 15 000 23 000 31 000 4 990 6 804 10 433 14 062 80 5 5 6492H 6492HT 1 450 2 600 3 450 4 300 658 1179 1565 1950 2 600 4 650 6 500 8 000 1 179 2 109 2 948 3 629 4 350 1 973 6 270 2 844 9 250 4 196 7 800 3 538 11 700 5 307 15 850 7 190 10 300 4 672 15 600 7 076 21 750 9 866 12 900 5 851 19 300 8 754 27 750 12 587 11 900 21 400 29 600 38 000 5 398 9 707 13 427 17 237 12 300 22 000 30 200 39 000 5 579 9 979 13 699 17 690 100 6 9 6492H 6492HT 1 900 2 490 3 450 4 300 5 050 862 1129 1565 1950 2291 3 300 4 350 6 250 8 000 9 400 1 497 1 973 2 835 3 629 4 264 5 700 2 586 8 470 3 842 11 400 5 171 7 450 13 379 11 000 4 990 14 900 6 759 10 300 4 672 15 700 7 122 21 350 9 684 12 90
4. 5 352 7 666 10 932 30 2 1 6492H 6492HT 900 1 440 1 820 2 650 3 450 408 653 826 1202 1565 1 650 2 700 3 450 4 900 6 500 748 1 225 1 565 2 223 2 948 2 700 1 225 4 040 11 833 5 350 2 427 4 300 1 950 6 580 2 985 8 800 3 992 5 450 2 472 8 400 3 810 11 800 5 352 7 950 3 606 12 000 5 443 17 000 7 711 10 000 4 536 15 700 7 122 22 100 10 025 7770 12 000 19 000 23 100 30 100 3 524 5 443 8 618 10 478 13 653 8 100 12 500 19 600 23 800 30 600 3 674 5 670 8 891 10 796 13 880 40 28 6492H 6492HT 1 100 1 440 1 820 2 650 3 450 499 653 826 1202 1565 1 750 2 500 3 450 4 900 6 500 794 1 134 1 565 2 223 2 948 3 300 1 497 4 500 2 041 6 400 2 903 4 300 1 950 6 300 2 858 8 350 3 788 5 450 2 472 8 500 3 856 11 400 5 171 7 950 3 606 12 600 5 715 17 000 7 711 10 300 4 672 16 700 7 575 22 650 10 274 8800 11 300 15 300 23 000 30 600 3 992 5 126 6 940 10 433 13 880 9 000 11 900 16 100 24 000 31 400 4 082 5 398 7 303 10 886 14 243 50 3 5 6492H 6492HT 1 250 1 820 2 650 3 450 4 300 567 826 1202 1565 1950 2 250 3 200 4 900 6 500 8 000 1 021 1 452 2 223 2 948 3 629 3 750 1 701 4 950 2 245 7 950 3 606 5 450 2 472 8 400 3 810 11 800 5 352 7 950 3 606 12 200 5 534 17 000 7 711 10 300 4 672 15 695 7
5. MAIN VALVE PISTONS MAIN VALVE PILOT INLET SPRING SCREEN MAIN VALVE A6552 PLUG NPS 1 1 1 2 OR 2 DN 25 40 OR 50 MAIN VALVE BODY AND TYPE 6492H OR 6492HT PILOT MAIN VALVE PLUG MAIN VALVE PISTON MAIN VALVE STEM PILOT VALVE PLUG SPRING A6553 ll INLET PRESSURE G OUTLET PRESSURE PILOT INLET ATMOSPHERIC PRESSURE SCREEN LOADING PRESSURE NPS 2 1 2 3 4 OR 6 x 4 DN 65 80 100 OR 150 x 100 MAIN VALVE BODY AND TYPE 6492L PILOT Figure 2 Type 92S Pressure Reducing Regulator Operational Schematics Bulletin 71 2 92S TVPE 6492H PILOT ME TVPE 6492H PILOT TYPE 92S MAIN VALVE TYPE 92S MAIN VALVE TYPE 6492HM SAFETY OVERRIDE PILOT E0402 Figure 3 NPS 1 1 1 2 and 2 DN 25 40 and 50 Type 92S Pilot Operated Pressure Reducing Regulator with Safety Override Pilot Operational Schematic TYPE 92S MAIN VALVE TYPE 92S MAIN VALVE V 6492H PILOT Te TYPE 6492H PILOT TYPE 6492HM SAFETY OVERRIDE PILOT E0403 E INLET PRESSURE BA OUTLET PRESSURE TA ATMOSPHERIC PRESSURE E LOADING PRESSURE MM INTERMEDIATE PRESSURE Figure 4 NPS 2 1 2 3 and 4 DN 65 80 and 100 Type 92S Pilot Operated Pressure Reducing Valve with Safety Override Pilot Operational Schematic Bulletin 71 2 92S Table 4 Safetv Pilot Outlet Control Pressure Ranges SPRING RANGE MINIMUM PRESSURE AT WHICH TYPE psig SPRING COLOR PART NUMBER MONITORING PILOT CAN BE
6. NPT in main valve iip So NPT e Ja bi cvlinder spacer NET E NPS 2 1 2 3 4 and 6 x 4 DN 65 80 100 and 2 50 Flanged 67 30 150 x 100 2 Main Valve Sizes 1 4 NPT aa E Flanged gi i in pilot body 3 80 Flanged 115 52 4 100 Flanged 165 75 Pilot Spring Case Vent CL300 335 152 Standard 1 8 inch 3 18 mm drilled hole GRAM eR Eade J 167 Optional 1 4 NPT tapping for pressure loading or on off service 1 The pressure temperature limits in this Bulletin and any applicable standard or code limitations must not be exceeded 2 The two number designation indicates line size by trim size Table 1 Outlet Control Pressure Ranges OUTLET PRESSURE SPRING WIRE DIAMETER SPRING FREE LENGTH PILOT TYPE RANGES PARTNUMBER COLOR CODE psig bar Inches mm Inches mm 2to6 0 14 to 0 41 1E395627022 Yellow 0 207 5 26 2 50 63 5 6492L 5 to 15 0 35 to 1 0 1D7455T0012 Green 0 234 5 94 2 62 66 6 13 to 25 0 90 to 1 7 1E395727192 Red 0 283 7 19 2 44 62 0 10 to 30 0 69 to 2 1 1E395627022 Yellow 0 207 5 26 2 50 63 5 6492H 25 to 75 1 7 to 5 2 1D7455T0012 Green 0 234 5 94 2 62 66 6 70 to 150 4 8 to 10 3 1E395727192 Red 0 283 7 19 2 44 62 0 15 to 100 1 0 to 6 9 14B9943X012 0 282 7 16 2 50 63 5 onsen 80 to 250 5 5 to 17 2 14B9942X012 Unpainted 0 375 9 53 2 50 63 5 Table 2 Maximum Inlet and Outlet Pressures MAXIMUM ALLOWABLE INLET PRESSURE MAXIMUM MAXIMUM EMERGENCY OUTLET PRESSURE Steel and OPERATI
7. downstream of the regulator outlet and 39 inches 991 mm from piping surface 12 continued Bulletin 71 2 92S Table 6 Noise Level Data in Decibels with Schedule 40 Downstream Piping and No Insulation continued NOISE LEVEL dBA PERCENTAGE NPS 2 7 DN 50 Main NPS 2 1 2 DN 65 Main NPS 3 DN 80 Main NPS 4 7 DN 100 Main Py AP OF MAXIMUM Valve Body with Valve Body with Valve Body with Valve Body with 2 inch 51 mm 4 inch 102 mm 4 inch 102 mm 8 inch 203 mm Prabs REGULATOR Downstream Pipin Downstream Pipin Downstream Pipin Downstream Pipin si bar Without With Without With Without With Without With psig Attenuator Attenuator Attenuator Attenuator Attenuator Attenuator Attenuator Attenuator 0 2 100 84 81 78 76 84 80 90 88 l 30 73 71 71 68 75 72 83 80 0 3 100 90 85 84 80 90 84 95 90 i 30 80 77 73 69 77 73 85 82 04 100 93 88 88 81 92 86 98 93 i 30 82 78 77 73 81 77 88 85 250 17 2 0 5 100 95 91 90 84 94 88 100 95 i 30 85 80 79 75 85 79 91 87 0 6 100 98 92 93 87 94 91 102 96 30 88 82 82 77 86 80 92 88 07 100 101 94 96 91 100 95 104 99 i 30 89 83 85 81 92 83 95 91 1 Overall noise levels determined at a point 39 inches 991 mm downstream of the regulator outlet and 39 inches 991 mm from piping surface Ordering Information When ordering specify Application e Range of temperatures e Range of inlet pressures maximum normal minimum
8. e Outlet pressure setting minimum controlled e Body size Range of flow rates maximum normal Construction Refer to the Specifications section on page 2 Review the descriptions to the right of each specification and specify the desired choice wherever there is a selection to be made If not otherwise specified the pilot control spring is factory set at the approximate mid range Be sure to specify the type of regulator desired standard pilot or pilot with optional tapped spring case Refer to separate bulletins for information on loading regulators for use with pressure loaded pilots 13 Bulletin 71 2 92S TRIM REMOVAL CLEARANCE 17A8559 A B1904 1 4 NPT CONTROL LINE CONNECTION 17A8560 A B1904 Figure 9 Dimensions Table 7 Dimensions 1 4 NPT CONTROL LINE CONNECTION ON BACKSIDE TRIM REMOVAL CLEARANCE NPS 2 1 2 3 4 OR 6 x 4 DN 65 80 100 OR 150 x 100 MAIN VALVE BODY DIMENSIONS INCHES mm MAIN VALVE BODY SIZE NPT CL125 FF or CL150 RF Flanged CL250 RF or CL300 RF Flanged CL600 RF Flanged E Maximum Types 6492H and 6492HT Pilot Type 6492L Pllot Trim Removal Clearance pn Inches mm jinchesj mm jinchesj mm jinchesj mm jinchesj mm Inches mm jinchesj mm jinchesj mm ji
9. pressure loaded service Figure 7 the operation is the same as for a standard pilot except that the pilot control spring force on the pilot valve plug is aided bv pneumatic pressure from the loading device With a pilot for on off service the only force acting on top of the pilot diaphragm is pneumatic pressure provided by the solenoid or switching valve Installation The Type 92S regulator should be installed and used in accordance with governmental codes and regulations Although this regulator minimizes leakage under shutoff conditions downstream overpressure protection must be provided by the user The pressure and temperature limitations in the Specifications section must be observed and the downstream equipment protected A Type 928 regulator may be installed in any orientation but should not be installed in a tall vertical pipeline where condensate could collect and create a pressure head affecting regulator performance To obtain maximum flow capacities in some instances outlet piping will have to be swaged up above the given body size A downstream control line is required but is not furnished with the Type 92S regulator Additionally an adjustable loading pressure regulator and loading pressure piping are required for pressure loading pilot regulators while an on off or solenoid valve is required for on off pilot regulators Dimensions are shown in Figure 9 Bulletin 71 2 92S PILOT SPRING BLU d VALVE
10. treated 416 Stainless steel Piston Ring s Polytetrafluoroethylene PTFE Piston Ring Retainer s 302 Stainless steel Noise Attenuation Trim If Used Stainless steel Stem Seal PTFE glass Pilot Body and Spring Case Cast iron Steel and Stainless steel Seat Ring and Stem Heat treated 416 Stainless steel Bellows and Bellows Retainer Brass Plug Plug Guide Plug Spring Diaphragms Bleed Restriction and Inlet Screen Stainless steel Diaphragm Gasket Encapsulated fiber asbestos Control Spring Upper Spring Seat Adjusting Screw Bolting Pipe Plug Reducing Bushing and If Used Diaphragm Plate Steel Fittings Brass Tubing Copper Pipe Nipple Steel 1 The pressure temperature limits in this Bulletin and any applicable standard or code limitations must not be exceeded 2 The two number designation indicates line size by trim size continued Bulletin 71 2 92S Specifications continued Maximum Temperature Capabilities 1 Pressure Registration Cast Iron Main Valve and Pilot 406 F 208 C External through downstream control line Steel Main Valve and Pilot 500 F 260 C A imate Weight High Temperature Optional Steel and Stainless is el steel Main Valve and Pilot 650 F 343 C FETA iii APPROXIMATE Downstream Control Line Connection CONNECTION STYLE i NPS 1 1 1 2 and 2 DN 25 40 and 50 RPM a il KO i aei i i 1 25 NPT or flanged 32 15 Main Valve Sizes 1 4
11. with Safety Override Pilot upstream steam pressure does not exceed 400 psig 27 6 bar Local codes and standards may require approval by an appropriate authority prior to installation Operation Once placed in operation the upstream Type 6492H pilot senses the intermediate pressure between both valves and the Type 6492HM or 6492HTM pilot senses downstream pressure of the second valve As demand for flow increases intermediate pressure will fall causing the Type 6492H pilot to open As the Type 6492H pilot valve opens loading pressure to the main valve increases opening the main valve The Type 6492HM or 6492HTM safety override pilot remains open because its setpoint is above the setpoint of the downstream valve In the unlikely event that the downstream valve fails open downstream pressure will rise above the downstream valve s setpoint This pressure is sensed by the Type 6492HM or 6492HTM safety override pilot As downstream pressure increases the safety override pilot closes reducing loading pressure to the main valve which positions the main valve to maintain downstream pressure as specified per ASME Boiler and Pressure Vessel Code Section VIII In the event that the upstream valve fails the downstream regulator will prevent downstream pressure from rising above safe operating levels It is recommended to install some type of warning system such as a sentinal relief valve to warn the operator that a valve has failed
12. 0 5 851 20 100 9 117 26 800 12 156 15 100 6 849 14 400 19 900 28 700 35 700 6 532 9 027 13 018 16 194 15 200 20 500 29 100 36 500 6 895 9 299 13 200 16 556 10 of outlet pressure setting 1 Standard pi ot or combination of setting plus loading pressure or optional pilot shaded areas show where maximum differential pressure is exceeded continued 11 Bulletin 71 2 92S Table 5 Flow Capacities in Pounds per Hour kg h of Saturated Steam continued OUTLET MAIN VALVE BODY SIZE NPS DN PRESSURE PILOT INLET SETTING TYPE PRESSURE 1 25 1 1 2 140 2150 2 1 2 65 3 80 41100 6x 4 150 x 100 DROOP NUMBER psig bar psig bar Ibs h kg h Ibs h kg h Ibs h kg h 140 9 7 1 600 726 3 100 e4go 150 10 3 1 900 862 3650 125 8 6 gagzmr 200 13 8 3 150 1 429 5 750 109 of 250 17 2 4 300 1 950 8 000 putei 300 20 7 5 050 2 291 9 400 pressure 175 12 1 2 450 1 111 4 000 setting 150 10 3 6492H 200 13 8 3 050 1 383 5 250 6492HT 250 17 2 4 150 1 882 7 400 300 20 7 5 050 2 291 9 400 1 Standard pilot or combination of setting pl shaded areas indicate where minimum differential pressure is not attained us loading pressure or optional pilot Table 6 Noise Level Data in Decibel
13. Bulletin 71 2 92S December 2011 Type 92S Pilot Operated Steam Regulator Introduction The Type 92S steam regulator is piston actuated for high cycle steam service which includes a Type 6492L 6492H or 6492HT pilot see Figure 1 These pilots have bellows sealed stems to eliminate stem guide friction The valve and pilot use lapped seating surfaces that have been proven to minimize seat leakage Features Good Shutoff for Low Downstream Build up Type 92S main valve and Types 6492H 6492L and PRA i J 6492HT pilots are machine lapped seating surfaces ili that have been time proven to minimize seat leakage 1 NPT STEEL when the downstream demand is zero and the MAIN VALVE WITH TYPE 6492H OR 6492HT PILOT regulator is shutoff Resistance to Piping Stresses Steel constructions are available to help resist the piping stresses commonly encountered in steam applications Ease of Installation Compact construction reduces installation space requirements Supply of pressure to the pilot is supplied from the inlet side of the main valve through factory piped tubing with a standard pilot this means no separate pilot supply pressure is required Increased Sensitivity to Downstream Pressure Changes Friction reducing bellows seal on the pilot stem and large pilot diaphragm areas yield good sensitivity Ease of Pilot Maintenance Pilot valve plug and seat can be removed for inspection of maintenance without disassembling
14. NG OUTLET FET CONSTRUCTION Cast Iron Stainless Steel PRESSURE Cast Iron Main Valve tee or tainless i Steel Main Valve and and Pilot Bodv l psig bar psig bar psig bar Pilot Bodv 300 psig 20 7 bar or With Type 6492HT pilot 250 17 2 main valve body rating limit whichever is lower 300 20 7 250 psig 17 2 bar or 300 psig 20 7 bar or With Type 6492H pilot 150 10 3 main valve body rating main valve body rating 250 17 2 limit whichever is lower limit whichever is lower With Type 6492L pilot 25 1 7 100 psig 6 9 bar 100 psig 6 9 bar Bulletin 71 2 92S Table 3 Flow and Sizing Coefficients 1 BODY SIZE ORIFICE SIZE IEC SIZE COEFFICIENTS REGULATING WIDE OPEN C FOR r K NPS DN Inches mm Cs RELIEF SIZING 1 j x Fp FL 1 25 7 8 22 16 17 5 0 51 1 1 2 40 1 1 8 29 30 33 0 62 0 47 0 79 2 50 1 29 64 37 48 52 0 48 2 1 2 65 1 5 8 41 74 78 34 0 73 0 48 3 80 2 1 16 52 100 110 0 47 0 71 0 84 4 100 2 3 8 60 140 145 0 46 6x4 1150x100 2 3 8 60 150 155 0 46 1 C Cs x 20 C4 e Lapped Seats for Tight Shutoff The valve and pilot use lapped seating surfaces that have been proven to minimize seat leakage e Application Flexibility Pilot with optional tapped spring case is available for use either with an air loading regulator for remote adjustment of outlet pressure setting or when all compression is removed from the pilot co
15. SET 10 to 30 0 69 to 2 1 Yellow 1E395627022 5 psig 0 35 bar over normal distribution pressure 6492HM 25 to 75 1 7 to 5 2 Green 1D7455T0012 70 to 150 4 8 to 10 3 Black 1E395727192 10 psig 0 69 bar over normal distribution pressure 15 to 100 1 0 to 6 9 14B9943X012 6492HTM Unpainted 80 to 250 5 5 to 17 2 14B9942X012 Oy FO a TYPE 92S MAIN VALVE TYPE 92S MAIN VALVE ad ORO e TVPE 6492H PILOT TVPE 6492H PILOT TOP VIEW TVPE 6492H PILOT TVPE 6492H PILOT TYPE 92S MAIN VALVE TYPE 92S MAIN VALVE TYPE 6492HM SAFETY OVERRIDE PILOT SIDE VIEW Figure 5 NPS 1 1 1 2 and 2 DN 25 40 and 50 Piping Schematics Bulletin 71 2 92S Type 92S Pilot Operated Pressure Reducing Regulator with Safety Override Pilot A Type 6492HM or 6492HTM safety override pilot is available for the Type 92S The Type 6492H pilot is used in a series installation with the Type 6492HM or 6492HTM safety override pilot installed on the upstream regulator The Type 6492HM or 6492HTM safety override pilot senses pressure downstream of the second valve and prevents pressure from rising above safe operating pressure in the event the downstream valve fails This system is approved by ASME B31 1 1989 122 14 2 A and can replace an ASME safety valve when vent piping is not practical and Type 92S Pilot Operated Pressure Reducing Regulator
16. TTING IS 60 psig 4 1 bar Figure 8 Typical Performance Curve for NPS 2 1 2 DN 65 Type 92S Pressure Reducing Regulator with Type 6492H Pilot 10 Table 5 Flow Capacities in Pounds per Hour kg h of Saturated Steam OUTLET PRESSURE SETTING psig bar 5 0 35 PILOT TYPE NUMBER 6492L INLET PRESSURE MAIN VALVE BODY SIZE NPS DN Bulletin 71 2 92S 1 25 1 1 2 40 21 50 2 1 2 65 3 80 4 100 6x 4 150 x 100 psig 25 30 50 bar Ibs h 575 700 950 kg h 261 318 431 Ibs h 950 1 150 1 800 kg h 431 522 816 Ibs h kg h Ibs h kg h Ibs h kg h 1 750 794 1 000 454 1 225 556 1 880 853 1 500 680 2 200 998 2 950 1 338 4 180 1 896 6 550 2 971 Ibs h 2510 4000 8500 kg h 1 139 1 814 3 856 Ibs h 2 600 4 100 8 600 kg h 1 179 1 860 3 901 DROOP 1 psi 0 07 bar 75 100 1 350 1 725 1 800 612 782 816 2 375 3 050 4 050 1 077 1 383 1 837 4 100 1 860 6 000 2 722 8 400 3 810 5 600 2 540 8 500 3 856 10 300 4 672 6 150 2 790 11 900 5 398 16 900 7 666 12 600 14 300 23 000 5 715 6 486 10 433 12 900 15 100 23 600 5 851 6 849 10 705 10 0 69 6492H or 6492L 700 1 040 1 440 318 472 653 1 200 1 800 2 600 544 816 1 179 2 050 930 3 050 1 383 4 300 1 950 3 100 1 406 4 700 2 132 6 250 2 835 4 400 1 996
17. a Pi gauge 14 7 C Regulating or wide open steam sizing coefficient see Table 3 2 If the steam is superheated or if the pressure drop across the regulator is lower than critical absolute outlet pressure is greater than approximately one half the absolute inlet pressure use the valve sizing slide rule or the sizing nomographs in Catalog 10 Noise Abatement Information A noise attenuation trim is available for use with NPS 2 DN 50 and larger Type 92S steam regulators to provide an economical means for the reduction of noise from high velocity steam flow Capacities for a regulator equipped with a noise attenuation trim are the same as for a regulator without noise attenuation trim and are given in Table 5 TVPE 6492H PILOT ba ia TYPE 92S MAIN VALVE Bulletin 71 2 92S BOTTOM VIEW ES TYPE 6492HM SAFETY OVERRIDE PILOT N TYPE 92S MAIN VALVE Pu TYPE 6492H PILOT SIDE VIEW Figure 6 NPS 2 1 2 3 and 4 DN 65 80 and 100 Piping Schematics Noise level values for a regulator equipped either with or without a noise attenuation trim are presented in Table 6 These noise levels are determined at a point 39 inches 991 mm downstream of the regulator outlet and 39 inches 991 mm from the piping surface For example consider full capacity flow of steam through a NPS 2 DN 50 Type 92S steam regulator connected with uninsulated 2 inch 51 mm Schedule 40 downstream piping
18. al Pressures 1 MINIMUM DIFFERENTIAL PRESSURE MAXIMUM DIFFERENTIAL PRESSURE 200 psi 13 8 bar or body rating limit whichever is lower BODY SIZES NPS DN 1 1 1 2 and 2 25 40 and 50 15 psi 1 0 bar 2 1 2 3 4 and 6 x 4 65 80 100 and 150 x 100 2 175 psi 12 1 bar or body rating limit whichever is lower 20 psi 1 4 bar Outlet Control Pressure Ranges See Table 1 Maximum Outlet Pressures 1 See Table 2 Maximum Allowable Loading Pressure for Pilot with Tapped Spring Case Combination of pilot control spring setting and spring case loading pressure cannot exceed 150 psig 10 3 bar for Type 6492H pilot or 25 psig 1 7 bar for Type 6492L pilot and 250 psig 17 2 bar for Type 6492HT Droop See Table 5 and Figure 8 Typical Regulating Capacities See Table 5 and Capacity Information section Main Valve Orifice Sizes and Flow Coefficients See Table 3 Noise Information See Table 6 and Noise Abatement Information section Construction Materials Main Valve Body and Body Flange Cast iron NPS 1 through 4 DN 25 through 100 sizes only steel or CF8M Stainless steel all sizes Valve Plug Heat treated 17 4PH stainless steel Cage Cast iron or Stainless steel Spiral Wound Gasket 316L stainless steel and graphite Spring Lower Stem Retaining Ring Bolting and Cylinder Spacer Steel or plated steel Body and Cylinder Gaskets Copper Pistons Seat Ring and Cylinders Heat
19. e 6492L Pilot CI 2 to 6 psig 0 14 to 0 41 bar Yellow CI 5 to 15 psig 0 35 to 1 0 bar Green CI 13 to 25 psig 0 90 to 1 7 bar Red Type 6492H Pilot LI 10 to 30 psig 0 69 to 2 1 bar Yellow LI 25 to 75 psig 1 7 to 5 2 bar Green CI 70 to 150 psig 4 8 to 10 3 bar Red Type 6492HT Pilot CI 15 to 100 psig 1 0 to 6 9 bar Unpainted CI 80 to 250 psig 5 5 to 17 2 bar Unpainted Noise Attenuation Trim Optional O Yes Replacement Pilot Optional CI Yes send one replacement pilot to match this order Main Valve Replacement Parts Kit Optional LI Yes send one main valve replacement parts kit to match this order Pilot Replacement Parts Kit Optional O Yes send one pilot replacement parts kit to match this order Steam Specification Worksheet Application Tag Number Valve Type Direct Operated Pilot Operated LI Pressure Loaded Differential Body Material LI Steel Iron Stainless Steel Inlet Outlet End Connection Style CL150 RF Flange NPT 1 CL300 RF Flange CL250 RF Flange CI PN 16 25 40 LI CL600 RF Flange Inlet Outlet Pipe Size _______ Inches mm Steam Conditions Maximum Normal Minimum Inlet Pressure psig bar Inlet Temperature F C Outlet Pressure psig bar Flow pounds h or kg hr Performance Required Accuracy Requirements
20. en 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 their 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 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 product remains solely with the purchaser 4 EMERSON ess Management Emerson Process Management Regulator Technologies Inc 1984 2011 All Rights Reserved
21. in the system This will prevent prolonged operation with one valve which could cause valve trim wear and noise associated with operation at high differential pressures When operating in most steam systems valve setpoints should be in strict accordance to ASME Boiler and Pressure Vessel Code Section VIII The Type 6492HM or 6492HTM safety override pilot should be set at 10 psig 0 69 bar or 10 above maximum downstream operating pressure of the second valve whichever pressure is greater For example most HVAC systems operate at 15 psig 1 0 bar so the safety override pilot should be set no higher than 25 psig 1 7 bar Capacity Information Table 5 gives typical regulating capacities in pounds per hour kg h of saturated steam Capacities for regulators with noise attenuation trim are the same as for regulators without noise attenuation trim Figure 8 shows a typical performance curve To determine regulating capacities at pressure settings not given in Table 5 or to determine wide open capacities for relief sizing at any inlet pressure use the following procedure 1 or 2 as appropriate 1 If the steam is saturated and the pressure drop across the regulator is critical absolute outlet pressure is equal to approximately one half or less than one half of the absolute inlet pressure use the equation Q P fabs Cs where Q Flow capacity in pounds of saturated steam per hour Piabs Absolute inlet pressure in psi
22. nchesj mm jinchesj mm 1 25 1 94 49 1 2 40 2 69 68 2 75 70 2 50 2 94 75 2 1 2 65 3 28 83 3 12 79 3 80 3 69 94 3 12 79 4 100 4 31 109 5 00 127 6x4 150x100 4 31 109 7 00 178 14 Ordering Guide Bodv Size Select One NPS 1 DN 25 NPS 1 1 2 DN 40 NPS 2 DN 50 NPS 2 1 2 DN 65 NPS 3 DN 80 NPS 4 DN 100 NPS 6 x 4 DN 150 x 100 WCC Steel or Stainless steel with CL300 RF and CL600 RF only Body and Body Flange Material and End Connection Style Select One Cast Iron NPT CL125 FF CL250 RF WCC Steel NPT CL150 RF CL300 RF CL600 RF PN 16 25 40 CF8M Stainless Steel NPT CL150 RF CL300 RF CL600 RF PN 16 25 40 Tubing and Fittings Select One Copper tubing with brass fittings Stainless steel tubing and fittings Pilot Bellows Select One Brass standard 321 Stainless steel Regulators Quick Order Guide oe Readily Available for Shipment kk Allow Additional Time for Shipment Consult Your local Sales Office for Availability Availability of the product being ordered is determined by the component with the longest shipping time for the requested construction Special Order Constructed from Non Stocked Parts Bulletin 71 2 92S Outlet Pressure Range Select One Typ
23. ntrol spring with a solenoid or switching valve for on off service Principle of Operation Pilot supplv pressure is piped from the main valve inlet Figure 2 to the pilot inlet connection Downstream pressure registers on the main valve pistons through the downstream control line and then on the pilot diaphragm When increased downstream demand lowers the downstream pressure to a value below the setting of the pilot control spring this forces the pilot valve plug to open increasing the loading pressure on the main valve pistons At the same time the increased demand lowers the downstream pressure on the main valve piston s This opens the main valve plug increasing flow to the downstream svstem to satisfv the increased demand and to restore downstream pressure to the setting of the pilot control spring Decreased downstream demand increases the downstream pressure registered on the pilot diaphragm The increased pressure overcomes the force of the pilot control spring and allows the pilot valve plug spring to close the valve plug As the pilot valve plug closes excess loading pressure bleeds to the downstream svstem through the pilot bleed restriction At the same time decreased downstream demand increases the downstream pressure registered on the main valve piston s This allows the main valve spring to close the main valve plug reducing flow to the downstream svstem in response to the decreased demand With a pilot for
24. piping connections and MAIN QAL EVA WE Meee ot without removing the diaphragm Pilot inlet screen Figure 2 is easilv removed with the seating parts for inspection and cleaning Diaphragm can be removed without disturbing the seating parts W4088 1 Figure 1 Type 92S Pilot Operated Steam Regulator full flow means for the reduction of noise from high e Noise Reduction Capability Without Decrease velocity steam flow Further noise reduction of in Capacity A noise attenuation trim is the system can be achieved by the use of a heavier available for use with NPS 2 DN 50 and larger piping schedule and or thermal insulation of the main valve sizes to provide an economical yet attached piping 4 v EMERSON Process Management D100621X012 Bulletin 71 2 92S Specifications Main Valve Body Sizes and End Connection Styles BODY SIZES Steel or Cast Iron Body Stainless Steel Body 1 1 1 2 and 2 NPT NPT or PN 16 25 40 END CONNECTION STYLES AND RATINGS NPS 1 1 1 2 2 2 1 2 3 CL150 RF CL300 RF and 4 DN 25 40 50 65 oo CL600 RF or 80 and 100 PN 16 25 40 CL300 RF NFS OXA Not available CL600 RF or 2 Bonie e ato PN 16 25 40 64 100 Maximum Inlet and Pilot Supply Pressure Cast Iron Main Valve and Pilot 250 psig 17 2 bar or body rating limit whichever is lower Steel Main Valve and Pilot 300 psig 20 7 bar or body rating limit whichever is lower Minimum and Maximum Differenti
25. s with Schedule 40 Downstream Piping and No Insulation 1 NOISE LEVEL dBA PERCENTAGE NPS 2 7 DN 50 Main NPS 2 1 2 DN 65 Main NPS 3 DN 80 Main NPS 4 7 DN 100 Main P AP OF MAXIMUM Valve Body with Valve Body with Valve Body with Valve Body with 2 inch 51 mm 4 inch 102 mm 4 inch 102 mm 8 inch 203 mm Prabs REGULATOR Downstream Piping Downstream Piping Downstream Piping Downstream Piping FLOW RATE si bar Without With Without With Without With Without With psig Attenuator Attenuator Attenuator Attenuator Attenuator Attenuator Attenuator Attenuator 0 2 100 73 72 66 64 72 68 78 76 30 62 61 59 56 63 60 71 68 0 3 100 79 77 72 68 78 72 83 78 i 30 68 66 61 57 65 61 73 70 04 100 82 79 76 69 80 74 86 81 i 30 71 68 65 61 69 65 76 73 50 3 5 0 5 100 84 80 78 72 82 76 88 83 30 T3 69 67 63 73 67 79 75 0 6 100 87 80 81 75 82 79 90 84 i 30 76 70 70 65 74 68 80 76 0 7 100 88 82 84 79 88 83 92 87 i 30 78 71 73 69 80 71 83 79 0 2 100 78 77 71 69 77 73 83 81 i 30 67 66 64 61 68 65 76 73 0 3 100 84 82 77 73 83 77 88 83 30 73 71 66 62 70 66 78 75 04 100 86 84 81 74 85 79 91 86 i 30 76 72 70 66 74 70 80 78 100 6 9 0 5 100 89 85 83 77 87 81 93 88 30 78 74 72 68 78 72 84 80 0 6 100 92 86 86 80 87 84 95 89 i 30 81 75 75 70 79 73 85 81 07 100 82 75 78 74 85 76 88 84 i 30 93 86 89 84 93 88 97 92 1 Overall noise levels determined at a point 39 inches 991 mm
26. see Table 6 For an inlet pressure of 250 psig 17 2 bar and an outlet pressure of 100 psig 6 9 bar P P4aps is 0 6 Under the specified service conditions the noise level for steam flow through a Type 92S steam regulator without a noise attenuation trim will be 98 decibels while the same regulator equipped with a noise attenuation trim will have a noise level reduced to 92 decibels Noise levels for steam flow through a Type 92S steam regulator can be reduced further with the use of either a heavier schedule of pipe or thermal insulation of the downstream piping By using thermal insulation as much as 15 decibels of noise can be additionally reduced from the system Consult the insulation manufacturer s specifications for the attenuating capability and application procedures of the specific insulation required by your system Bulletin 71 2 92S BLEED RESTRICTION REQUIRED REGULATOR NEEDLE ONLY IF THE LOADING REGULATOR ml J DOES NOT HAVE INTERNAL RELIEF CONTROL LINE CONNECTION CONTROL LINE O SHUTOFF VALVE i al STRAINER BLOCK VALVE ha BLOCK VALVES A VENT VALVE BYPASS LINE 16A7958 B 16A1547 A A3334 Figure 7 Typical Pressure Loaded Pilot Installation FLOW kg h OF SATURATED STEAM 1000 2000 3000 4000 5000 6000 7000 o 8 8 8 o N w A a OUTLET PRESSURE bar 40 OUTLET PRESSURE psig FLOW POUNDS HOUR OF SATURATED STEAM A3330 IL NOTE INITIAL OUTLET PRESSURE SE
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