Emerson ACE97 Instruction Manual
Contents
1. Figure 15 Type ACE97 NPS 2 DN 50 Pad Valve 26 Type ACE97 X 4 S 2 NGAEN ZZZ Z z SASA Sg 7 j A d EN INN 4 eoo Figure 16 1 NPT Depad Main Valve Type ACE97 SSS FY Z a SAS 2 7 S 8 Br 12 EN Nee lt lt i mas TL CARS Figure 17 2 NPT Depad Main Valve Type ACE97 131 143 135 134 126 ZZ 82 HHH D 77 22227777724 75 22722228 83 80 81 76 79 78 77 157 E0674 Figure 18 NPS 3 and 4 DN 80 and 100 Depad Main Valve 29 Type ACE97 EM RNES 121161 TOS EE 777 MANAN 22 N 53 P Si 5 02 i 4 NG GOO 000800 e 2 x lt 2 Figure 19 Pilot Valve Parts Type ACE97 IN 22 28 see 4 EBELONNNNNNN NIG S S S S S NG NTS2. N N N N N N N N N N SS N N 3 Ks g NI p ei E PAD 0 5 3 INCHES W C 1 to 7 mbar PAD 3 13 INCHES W C 7 to 32 mbar DEPAD 4 10 INCHES W C 10 to 25 mbar DEPAD 4 16 INCHES W C 10 to 40 mbar PAD 0 5 7 INCHES 1 to 17 4 TO 6 INCHES W C 10 to 15 mbar 7 7 98 TM E PAD 4 TO 10 INCHES W C 10 to 25 mbar PAD 0 5 TO 1 4 PSIG 34 to 97 mbar PAD 1 0 2 2 PSIG 69 to 152 mbar DEPAD 16 TO 78 INCHES W C 40 to 194 mbar DEPAD 0 25 TO 1 PSIG 17 to 69 mbar DEPAD 0 25 TO 2 PSIG 17 to 138 mbar E0677 Figure 12 Actuator Spring Ranges 23 Type ACE97 113 27 18 445 42 41 8 S ER IN E0634 GOOG E0631 Figure 13 Type ACE97 NPS 1 2 DN 15 Pad Valve 24 N Type ACE97 2 34 42 41 40 39 38 36 NI DEG GGG E0635 GROOVE FOR ROLLING DIAPHRAGM BEAD 138 Figure 14 Type ACE97 NPS 1 DN 25 Pad Valve 35 25 Type ACE97 8 NG 122 s SCH 552555555 N GROOVE FOR ROLLING DIAPHRAGM BEAD
3. For NPS 3 and 4 DN 80 and 100 Main Valves Remove the spring guide key 82 tap bolt key 126 and lock washer key 79 8 Remove the spring key 84 and seal retaining plate key 83 9 Remove the O rings key 82 and the seal retainer key 80 10 Remove the stem seal key 81 Assembly Before proceeding read the following instructions Refer to the figures that pertain to your valve Figures 11 through 20 and review the list of approved lubricants sealants and adhesives in the Maintenance section when performing assembly operations 1 Clean and inspect all parts 2 Replace all O rings seals gaskets and any parts that are worn or damaged 3 Lightly lubricate all O rings and metal parts in moving contact 4 Seal all pipe fittings Depad Pilot Valve Assembly Refer to Figure 19 1 Invert the rolling diaphragm key 38 and place it over the threaded portion of the follower key 103 2 Install the poppet key 105 onto the threaded portion of the follower key 103 with the tapered end against the rolling diaphragm key 38 3 Install the O ring key 104 onto the poppet key 105 4 Place this sub assembly into the center cage key 108 from the end with internal threads 5 Install the seal retainer and O ring keys 127 and 104 onto the follower key 103 6 Apply Loctite 222 to the threads on the follower key 103 Thread the nut key 31 onto the follower 7 Insert a s
4. Table 4 Diagnostics Table C 1 through 4 Inlet Pressure Range Spring 51 to 120 psig 3 5 to 8 3 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open psig bar psig bar psig bar psig bar 51 3 5 50 3 4 29 2 0 5 0 35 60 4 1 59 4 1 36 2 5 12 0 83 70 4 8 69 4 8 43 3 0 19 1 3 80 5 5 79 5 4 51 3 5 27 1 9 90 6 2 89 6 1 59 4 1 34 2 3 100 6 9 99 6 8 66 4 5 42 2 9 110 7 6 109 7 5 74 5 1 50 3 4 120 8 3 119 8 2 81 5 6 57 3 9 Type ACE97 Table 5 Diagnostics Table 1 through 4 Inlet Pressure Range Spring 121 to 200 psig 8 3 to 13 8 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open psig bar psig bar psig bar psig bar 121 74 5 1 30 2 1 130 81 5 6 37 2 5 140 88 6 1 45 3 1 150 96 6 6 53 3 6 160 104 7 2 60 4 1 170 111 7 6 68 4 7 180 119 8 2 75 5 2 190 127 8 8 83 5 7 200 134 92 91 63 Table 6 Diagnostics Table 7 5 through 10 Inlet Pressure Range Spring 25 to 50 psig 1 7 to 3 4 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure
5. DN 25 x 50 x 50 105 pounds 48 kg NPS 2x3x3 DN 50 x 80 x 80 175 pounds 79 kg 1 The pressure temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded Type ACE97 E0005 OPEN PILOT NY INLET PRESSURE HE ATMOSPHERIC PRESSURE TT TANK PRESSURE PILOT LOADING PRESSURE 555555 VENT HEADER PRESSURE INLET BLEED PRESSURE LOADING PRESSURE gt EXHAUSTED BACK TO TANK ONIGFE DIAGNOSTIC DEPAD PILOT GAUGE 7 ADJUSTABLE DEADBAND REGULATOR CONTROLLED ene PRESSURE RANGE SPRING VENT J ACTUATOR 4 d x gt D SENSING CONNECTION DIAGNOSTIC PORT 4 MAIN VALVE SPRING E INERT GAS IN CONNECTION PAD VALVE Figure 2 Type ACE97 Pad On Depad Off Table 1 Actuator Spring Pressure Ranges CONTROL PRESSURE RANGES SPRING FREE LENGTH SPRING WIRE DIAMETER Pad Setpoint Depad Setpoint Above Pad INCHES mm INCHES mm inches w c mbar inches w c mbar 0 5 to 3 1to7 4 to 10 10 to 25 3 08 78 2 0 105 2 67 0 5to 7 1to 17 4 106 10 15 4 0 102 0 092 2 34 3 to 13 7 to 32 4 to 16 10 to 40 3 73 94 7 0 156 3 96 4 to 10 10 to 25 16 to 78 40 to 1940 s ue 0 5 to 1 4 psig 34 to 97 mbar 0 25 to 1 psig 17 to 69 3 8 96 5 0 250 6 35 1 0 to 2 2 psig 69 to 152 mbar 0 25 to 2 psig 17 to 138 3 8 96 5 0 313
6. 150 through 280 Seal Retainer depad pilot valve Connector external 3 8 inch 9 5 mm tube x 1 4 NPT NPS 1 and 2 DN 25 and 50 pad valves only Part NUmber GC050513X02 GC053309X02 GC053308X02 GC053308X02 GC053305X02 GC053302X02 GC220715X22 GC070435X02 GC053224X02 1F1139G0012 1N463906382 1F1139X0042 1F1139X0052 GC053223X02 GC053004X02 GC053304X92 GC053005X02 GC053801X42 GC053006X02 19B6407X012 19B6406X012 19B6406X012 19B6407X012 GC050507X02 GC260111X02 GC260112X02 GC260104X02 GC053229X02 GC070173X02 GC070173X52 GC070173X12 GC070173X62 GC260108X02 GC053103X02 GC070434X02 GC060216X22 GC060232X02 GC053222X02 Key 131 132 133 134 135 138 139 140 141 142 143 145 146 148 149 150 151 152 Description Tube Elbow 2 required external 1 4 inch 6 4 mm tube x 1 8 Tube Elbow 3 required external 1 4 inch 16 4 mm tube x 1 4 Type 252 Pilot Filter NPS 1 and 2 DN 25 and 50 pad pilot valve Pressure Gauge depad main valve Tubing Insert 6 required Plug pipe hex 1 NPT Hex Head Pipe Plug 2 required 1 4 Regulator pilot supply Tee Street for NPS 1 2 DN 15 Pad Valve Tee Street 2 required for NPS 1 and 2 DN 25 and 50 Pad Valves Tubing 6 foot length 1 8 m 1 inch 25 mm diameter PTFE Pipe Street Elbow 1 inch 25 mm Flange Depad Body x Tank Connection 1 NPS 1 DN 25 CL150
7. 7 95 1 Two nested springs are used See Figure 12 If a leak develops or if the unit or outlet continually vents gas service to the unit may be required Failure to correct trouble could result in a hazardous condition Only a qualified person must install or service the unit Installation operation and maintenance procedures performed by unqualified personnel may result in improper adjustment and unsafe operation Either condition may result in equipment damage or personal injury Use qualified personnel when installing operating and maintaining the Type ACE97 pad depad valve Introduction Scope of the Manual This instruction manual provides installation startup maintenance and parts ordering information for the Type ACE97 Pad Depad valve Figure 1 The product photo may vary depending on the size of the valve ordered Type ACE97 LOADING PRESSURE EXHAUSTED BACK TO TANK ON OFF DIAGNOSTIC GAUGE 2 DEPAD Dei CONTROLLED PRESSURE RANGE SPRING CLOSED PILOT SPRING m NNN INLET PRESSURE ATMOSPHERIC PRESSURE TANK PRESSURE PILOT LOADING PRESSURE VENT HEADER PRESSURE INERT GAS IN SI SENSING gt CONNECTION DIAGNOSTIC PORT TANK PAD VALVE CONNECTION Figure 3
8. 76 O ring continued NPS 3 DN 80 depad main valve Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM NPS 4 DN 100 depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM 77 depad main valve 78 Hex Head Machine Screw 1 NPT depad main valve 2 NPT NPS 3 and 4 DN 80 and 100 depad main valve 79 Lock Washer 1 NPT depad main valve 1 required 2 NPT depad main valve 1 required NPS 3 and 4 DN 80 and 100 depad main valve 2 required 80 Seal Retainer 4 required 1 NPT depad main valve 2 NPT depad main valve NPS 3 DN 80 depad main valve NPS 4 DN 100 depad main valve 81 Stem Seal 4 required 1 NPT depad main valve 2 NPT depad main valve NPS 3 DN 80 depad main valve NPS 4 DN 100 depad main valve 82 O ring 2 required 1 NPT depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM 2 NPT depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM NPS 3 DN 80 depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM NPS 4 DN 100 depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM Part NUmber 17B1364X052 17B1364X062 17B1364X072 GC072010X02 GC072010X12 GC072010X52 GC072010X62 GC053253X12 GC053
9. RF 1 NPS 2 DN 50 CL150 RF 2 NPT x NPS 2 DN 50 CL150 RF 2 NPT x NPS 3 DN 80 threaded flange 1 x NPS 1 DN 25 sanitary flange Pipe Nipple 1 inch 25 mm 5 80 x 5 inches 127 mm Close Nipple 1 NPT Depad valve 1 required 2 NPT Depad valve 2 required Pipe Tee 1 NPT Depad valve 2 NPT Depad valve Bushing 2 x 1 NPT S A M Single Array Manifold Depad Body x Tank Connection 1 NPS 1 1 2 DN 40 CL150 1 NPT x NPS 2 DN 50 CL150 1 NPS 2 DN 50 sanitary flange 1 NPS 3 DN 80 CL150 2 NPT x NPS 3 DN 80 CL150 Part NUmber 17B6809X042 GC160122X02 1A7947X0022 1 767535072 GC017001X02 1H9368X0032 GC031202X02 11A4038X022 GC031204X02 GC052514X52 GC023217X02 GC020285X02 GC023053X02 GC020299X02 GC023062X02 13A8621X022 GC230201X42 GC230201X12 GC230509X52 GC230206X52 GC230213X52 Type ACE97 Key Description 153 Pipe Nipple 1 25 mm 5 80 x 2 75 70 mm 1 NPT depad valve and NPS 1 2 DN 15 pad 2 depad valve only 157 Body Piping Weld Pad Body x Depad Body x Tank Connection x Vent Connection NPS 1 DN 25 x NPS 3 DN 80 x 3 inch 76 mm x 3 inch 76 mm NPS 1 DN 25 x NPS 4 DN 100 x 4 inch 102 mm x 4 inch 102 mm NPS 2 DN 50 x NPS 3 DN 80 x 3 inch 76 mm x 3 inch 76 mm NPS 2 DN 50 x NPS 4 DN 100 x 4 inch 102 mm x 4 inch 102 mm 160 Hex Head Machine Screw 2 NPT and NPS 3 DN 80 d
10. pilot valve 2 Loosen the locknut key 99 but maintain its position in relation to the adjusting coupling key 107 By maintaining the position of the locknut and the lower cage key 110 the depad setpoint remains unchanged 3 Separate the pilot valve from the spring case key 120 by unthreading and removing Depad Pilot Valve Disassembly Refer to Figure 19 1 Unthread and remove the coupling key 107 O oa ROLLING DIAPHRAGM KEY 38 STEM KEY 42 CROSS DRILLED HOLE PISTON O RING KEY 37 KEY 39 CAGE KEY 52 W8181 Figure 8 NPS 1 2 DN 15 Pad Valve Cage Assembly Unthread the lower cage key 110 Remove the rain cap key 109 Unthread the upper cage key 106 Remove the return spring key 101 Place a pin through the follower key 103 and unthread the nut key 31 This will release the internal components Remove all internal components seals and the rolling diaphragm key 38 Actuator Disassembly Refer to Figure 20 1 Remove actuator case cap screws lock washers and nuts keys 93 28 and 31 2 Remove the upper actuator case key 114 3 Remove the spring key 95 This may be one or more springs and associated hardware depending on the actual spring range See Figure 12 Remove the actuator stem key 94 diaphragm bolt key 117 upper diaphragm plate key 119 diaphragm key 163 and lower d
11. setpoint by turning the adjusting screw clockwise Turning the screw counterclockwise decreases the setpoint See Figure 7 Replace the depad adjusting collar against the locknut to re establish the depad setpoint To change the depad setpoint 1 Loosen the locknut below the adjusting coupling Rotate the collar to change the setpoint The bottom of the coupling nearest the locknut is left hand threaded Tighten the locknut Table 2 Diagnostic Analysis Pressure Ranges DIAGNOSTIC Equal to inlet supply pressure STATUS Pilot and main valves are closed Tank pressure is at or above set pressure Slightly below inlet supply pressure Pilot valve supplies gas to tank Tank pressure is just below set pressure Well below inlet supply pressure Pilot and main valves are both supplying gas to the tank Tank pressure is below setpoint Shutdown In any installation it is important to open and close valves slowly and to close the inlet shutoff valve first when shutting down the system Maintenance Valve parts are subject to normal wear and must be inspected and replaced as necessary The frequency of inspection and replacement of parts depend on the severity of service conditions and the requirements of local state and federal regulations Due to the care Regulator Technologies takes in meeting all manufacturing requirements use only replacement parts Type ACE97 Al
12. the main valve along with the lock washer key 21 Type ACE97 5 Remove the plug key 22 from the main valve 6 Insert wooden dowel rod or similar blunt tool through the bottom of the bonnet bore to remove the cage sub assembly keys 35 and 40 Pad Valve Cage Disassembly NPS 1 2 DN 15 valve Refer to Figures 8 and 13 1 Remove the cage key 52 from the body key 18 by slowly applying shop air approximately 20 psig 1 4 bar at the inlet of the body Use your hand to safely catch the cage as it is removed from the body See Figure 8 2 Remove the pilot valve from the cage key 52 by pressing on the poppet key 42 stem Use soft jaws to restrain the piston key 37 without damaging it Do not hold the poppet key 42 by the stem 3 To unscrew the piston key 37 from the poppet key 42 insert a small drill bit into the cross drilled holes on the poppet to turn and loosen Unthread the poppet from the piston and remove the rolling diaphragm key 38 Pad Pilot Valve Cage Disassembly NPS 1 and 2 DN 25 and 50 valves Refer to Figures 9 14 and 15 1 The upper cage key 40 will readily separate from the lower cage key 35 See Figure 9 2 Gently press the poppet stem key 42 to remove the pilot from the upper cage key 40 Use soft jaws to restrain the piston key 37 without damaging it Do not hold the poppet key 42 by the stem 3 To unscrew the piston key 37 from the poppet
13. the piston key 37 Use caution not to place the rolling diaphragm upside down refer to Figure 8 Apply Loctite 222 to the piston threads Thread the poppet key 42 onto the piston Use soft jaws to hold the piston Insert a small drill bit into the cross drilled holes on the poppet to turn and tighten 2 Install the O ring key 39 onto the poppet key 42 3 Lightly lubricate the piston key 37 4 Place the sub assembly into the cage key 52 Pad Pilot Valve Cage Assembly NPS 1 and 2 DN 25 and 50 valves Refer to Figures 9 14 and 15 1 Install O rings key 16 into the bonnet key 17 2 Apply Loctite 222 to the piston threads Place the rolling diaphragm key 38 over the threaded portion of the piston key 37 Position the rolling diaphragm bead as shown in Figure 9 Do not place the rolling diaphragm upside down Type ACE97 Thread the poppet key 42 onto the piston key 37 Use soft jawed pliers to restrain the piston so it is not damaged Do not hold the poppet by the stem Insert a small drill bit into the cross drilled hole on the poppet stem key 42 to turn and tighten 4 Slide the O ring key 39 onto the poppet key 42 Place the pilot sub assembly into the upper cage key 40 Press the lower cage key 35 and upper cage key 40 together to ensure the groove in the lower cage engages the rolling diaphragm key 38 bead Note Ensure that the rolling diaphragm bead is p
14. when Main Valve is Fully Open psig bar psig bar psig bar psig bar 25 17 24 1 7 11 0 76 0 0 00 30 2 1 29 2 0 14 0 96 3 0 21 35 2 4 34 2 3 17 1 2 6 0 41 40 2 8 39 2 7 21 1 4 9 0 62 45 3 1 44 3 0 24 1 7 13 0 89 50 3 4 49 3 4 27 1 9 16 1 1 Table 7 Diagnostics Table 7 5 through 10 Inlet Pressure Range Spring 51 to 120 psig 3 5 to 8 3 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open psig bar psig bar psig bar psig bar 51 24 1 7 3 0 21 60 30 2 1 9 0 62 70 36 2 5 15 1 0 80 42 2 9 22 1 5 90 49 3 4 28 1 9 100 55 3 8 34 2 3 110 61 4 2 41 2 8 120 68 47 47 3 2 Table 8 Diagnostics Table 7 5 through 10 Inlet Pressure Range Spring 121 to 200 psig 8 3 to 13 8 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open psig bar psig bar psig bar psig bar 121 8 3 120 8 3 63 4 3 31 2 1 130 9 0 129 9 0 69 4 8 37 2 5 140 9 6 139 9 6 75 5 2 43 3 0 150 10 3 149 10 3 82 5 6 49 3 4 160 11 0 159 10 9 88 6 1 56 3 9 170 11 7 169 11 7 94 6 9 62 4 3 180 12 4 179 12 3 101 7 0 68 4 7 190 13 1 189 13 0 107 7 4 75 5 2 200 13 8 199 13 7 113 7 8 81 5 6 10 Type ACE97 Table
15. 1 7 to 3 4 bar 51 to 120 psig 3 5 to 8 2 bar 121 to 200 psig 8 3 to 13 8 bar Control Pressure Ranges See Table 1 Maximum and Minimum Differential Pressures 25 psig 1 7 bar minimum 200 psig 13 8 bar maximum Maximum 20 psig 1 4 bar Flow Coefficients for Relief Valve Sizing 110 of rated NPS 1 2 DN 15 C 0 2 use C 0 22 C 0 4 use C 0 44 NPS 1 DN 25 C 1 use C 1 1 C 2 use C 22 C 4 use C 4 4 C 7 5 use C 8 25 C 10 use C 11 NPS 2 DN 50 C 20 use C 22 C 45 use C 50 C 60 use C 66 Depad Vapor Recovery Specifications Depad Body Sizes 1 and 2 NPT NPS 3 and 4 DN 80 and 100 Depad Pressure Ranges See Table 1 Valve Coefficients 110 of rated 1 NPT C 3 use C 3 3 C 6 use C 7 C 12 use C 13 C 17 use 19 2 NPT C 20 use C 22 C 35 use C 39 C 70 use C 77 NPS 3 DN 80 C 90 use C 99 C 115 use C 127 C 140 use C 154 NPS 4 DN 100 C 150 use C 165 C 200 use C 220 C 280 use C 308 General Type ACE97 Specifications Pressure Registration External Temperature Capabilities Nitrile NBR 20 to 180 F 29 to 82 Fluorocarbon FKM 0 to 212 F 18 to 100 C Ethylenepropylene EPDM FDA 20 to 212 F 29 to 100 C Perfluoroelastomer FFKM 20 to 212 F 29 to 100 C Approximate Weights NPS 1 2 x 1x 1 DN 15 x 25 x 25 70 pounds 32 kg NPS 1 2 x 2
16. 1 Lock Washer NPS 1 and 2 DN 25 and 50 pad valves only NPS 1 DN 25 pad valve NPS 2 DN 50 pad valve 22 Plug NPS 1 and 2 DN 25 and 50 pad valves lt BNANANA O o 23 O ring 2 required NPS 1 and 2 DN 25 and 50 1 through 4 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM 7 5 through 10 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM 20 through 60 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM 24 O ring NPS 1 and 2 DN 25 and 50 pad valves 1 through 4 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM C 7 5 through 10 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM 20 through 60 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM GC060903X02 GC060906X02 GC053206X02 GC053205X02 GC053204X02 GC053213X02 GC053212X02 GC053220X02 GC053221X02 GC053218X02 valves 1D2888X0032 1D2888X0042 1D2888X0052 1D2888X0022 18A1088X022 18A1088X042 18A1088X052 18A1088X032 1C628006992 1C6280X0102 1C6280X0012 1C6280X0092 1C782206992 1C7822X0122 1C7822X0132 1C7822X0112 1D2375X0062 1D2375X0082 1D237506382 1D2375X0072 1D785306992 1D7853X0032 1D7853X0042 1D7853
17. 2 Key 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 116 117 118 119 120 121 126 127 129 Description Upper Spring Guide actuator continued Pad 1 0 to 2 2 psig 69 to 152 mbar Depad 0 25 to 2 0 psig 17 to 138 mbar Spacer Pad 4 to 10 inches w c 10 to 25 mbar Depad 16 to 78 inches w c 40 to 194 mbar Pad 0 5 to 1 4 psig 34 to 97 mbar Depad 0 25 to 1 psig 17 to 69 mbar Pad 1 0 to 2 2 psig 69 to 152 mbar Depad 0 25 to 2 psig 17 to 138 mbar Locknut depad pilot valve Spring Adjuster depad pilot valve Return Spring depad pilot valve Gasket upper cage depad pilot valve Follower O ring 2 required depad pilot valve Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylenepropylene EPDM FDA Poppet depad pilot valve Upper Cage depad pilot valve Coupling Center Cage depad pilot valve Rain Cap Lower Cage depad pilot valve Fixed Orifice C 3 through 12 C 17 through 70 C 90 through 140 C 150 through 280 Spring Seat Pad 4 to 10 inches w c 10 to 25 mbar Depad 16 to 78 inches w c 40 to 194 mbar Lower Actuator Case Stainless Steel Upper Actuator Case Stainless Steel Lower Diaphragm Plate Diaphragm Bolt O ring Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM Upper Diaphragm Plate Spring Case Gasket spring case Hex Head Tap Bolt C 90 through 140 C
18. 253X32 GC053253X52 GC053253X72 GC053257X52 GC053257XB2 GC053257XF2 GC053265X12 GC053265X32 GC053265X72 GC053248X32 GC053248X52 GC053248X92 GC060229X02 GC060226X02 GC060905X02 GC060907X02 GC060907X02 GC053315X02 GC053310X02 GC053318X02 GC053337X02 GC071203X12 GC071203X02 GC071203X22 GC071203X32 12B3522X042 12B3522X022 12B3522X102 12B3522X092 1H8762X0012 1H8762X0052 1H8762X0072 1H8762X0062 1H7422X0022 1H7422X0052 1H7422X0042 1H7422X0032 1D267306992 1D2673X0012 1D2673X0072 1D2673X0062 19 Type ACE97 Key Description 83 Seal Retaining Plate 1 NPT depad main valve 2 NPT depad main valve NPS 3 DN 80 depad main valve NPS 4 DN 100 depad main valve 84 Spring depad main valve 3 through 17 20 through 70 C 90 through 140 C 150 through 280 85 Spring Guide depad main valve C 3 through 17 C 20 through 70 C 90 through 140 C 150 through 280 86 Retaining Ring 1 and 2 NPT depad main valves 87 Bonnet 1 NPT depad main valve 2 NPT depad main valve NPS 3 DN 80 depad main valve NPS A DN 100 depad main valve 88 O ring 1 NPT depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM 89 Retaining Ring 1 NPT depad main valve 90 Cap 1 depad main valve 91 Body depad main valve 1 NPT depad main valve 2 NPT depad main valve 93 Hex Head Machine Screw 24 required 94 Stem actuator 95 Actuator S
19. 3 24 27 38 39 and 41 Nitrile NBR Fluorocarbon Perfluoroelastomer Ethylenepropylene FDA Actuator diaphragm O ring 19B6044X012 19B6044X022 19B6044X032 19B6044X042 19B6042X012 19B6042X022 19B6042X032 19B6042X042 includes keys 27 38 102 104 118 121 and 163 NBR FFKM FKM FFKM EPDM FDA FFKM 16 O ring pad valve 2 required Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM 17 Bonnet pad valve C 1 through 4 C 7 5 through 10 C 20 through 60 18 Body pad valve C 0 2 C 0 4 C 1 through 4 C 7 5 through 10 C 20 through 60 19 C 1 through 10 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM C 20 through 60 Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM 20 Round Head Machine Screw NPS 1 and 2 DN 25 and 50 pad valves only NPS 1 DN 25 pad valve NPS 2 DN 50 pad valve Recommended Spare Part 18 19B6050X042 19B6050X052 19B6050X062 1F115306992 1F1153X0062 1F1153X0022 1F1153X0032 GC050929X12 GC050929X02 GC050919X62 GC052930X32 GC052907X32 2623 012 2627 012 GC050927X62 O ring NPS 1 and 2 DN 25 and 50 pad valves only 1C415706992 1C4157X0092 1C4157X0032 1C4157X0082 1F3581X0082 1F3581X0102 1F3581X0022 1F3581X0092 1A3776X0012 GC060225X02 Key Description Part NUmber 2
20. 9 Diagnostics Table 20 through 60 Inlet Pressure Range Spring 25 to 50 psig 1 7 to 3 4 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open psig bar psig bar psig bar psig bar 25 1 7 24 1 7 16 1 1 5 0 21 30 2 1 29 2 0 20 1 4 9 0 62 35 2 4 34 2 3 24 1 6 14 0 96 40 2 8 39 2 7 29 2 0 18 1 2 45 3 1 44 3 0 33 2 2 23 1 6 50 3 4 49 3 4 38 2 6 27 1 9 Table 10 Diagnostics Table 20 through 60 Inlet Pressure Range Spring 51 to 120 psig 3 5 to 8 3 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open psig bar psig bar psig bar psig bar 51 3 5 50 3 4 39 27 11 0 76 60 4 1 59 4 1 48 3 3 19 1 3 70 4 8 69 4 8 57 3 9 28 1 9 80 5 5 79 5 4 66 4 5 37 2 5 90 6 2 89 6 1 75 5 2 46 3 2 100 6 9 99 6 8 84 5 8 55 3 8 110 7 6 109 7 5 93 6 4 64 4 4 120 8 3 119 8 2 102 7 0 73 5 0 Table 11 Diagnostics Table 20 through 60 Inlet Pressure Range Spring 121 to 200 psig 8 3 to 13 8 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main V
21. Ge Type ACE97 November 2011 Type ACE97 Pad Depad Valve DEPAD PILOT VALVE W8161 ACTUATOR GAS INLET Figure 1 Type ACE97 Pad Depad Valve NPS 1 2 DN 15 Pad Valve 1 Depad Valve Shown Fisher pad depad valves must be Failure to follow these instructions or installed operated and maintained to properly install and maintain this in accordance with federal state and equipment could result in an explosion local codes rules and regulations fire chemical contamination and Emerson Process Management causing property damage and personal Regulator Technologies Inc Regulator injury or death Technologies instructions EMERSON Process Management D102773X012 Type ACE97 Specifications Ratings and specifications for the Type ACE97 Pad Depad valve are listed in the Specifications section below Factory specifications are stamped on the nameplate fastened to the actuator of the valve Pad Tank Blanketing Specifications Pad Body Sizes and End Connection Styles 1 2 1 and 2 NPS 1 2 1 and 2 DN 15 25 and 50 CL150 RF Maximum Operating Inlet Pressure 200 psig 13 8 bar Maximum Main Valve Inlet Pressure 200 psig 13 8 bar Inlet Operating Ranges NPS 1 2 DN 15 pad valve 25 to 200 psig 1 7 to 13 8 bar NPS 1 and 2 DN 25 and 50 pad valves 25 to 50 psig
22. KEY 25 O RING KEY 24 Figure 10 NPS 2 DN 50 Pad Valve Piston and Spring 5 Press and release the poppet key 42 stem It should freely move up and down If it does not repeat the procedure to this point to determine the cause 6 Place the O ring key 41 onto the cage key 52 Pad Valve Assembly NPS 1 and 2 DN 25 and 50 valve Refer to Figures 14 and 15 1 Prepare the main piston key 25 by installing the plug key 22 and O ring key 23 with the screw and lock washer keys 20 and 21 Apply Loctite 222 to the screw threads Install the main valve spring key 26 spring shim key 34 if required and spring guide key 49 if required into the piston key 25 Place the valve sub assembly piston key 25 spring key 26 and plug key 22 into the body key 18 4 Place an O ring key 19 into the body key 18 Place the bonnet key 17 onto the body key 18 and main valve key 25 Press firmly to seat the bonnet O ring joint If you are performing assembly operations on a NPS 2 DN 50 valve attach the bonnet key 17 to the body key 18 with four cap screws and lock washers keys 51 and 52 Actuator Assembly Refer to Figure 20 1 Place the actuator gasket key 27 and lower actuator case key 113 onto the body key 18 Secure with lock washers and hex head screws keys 28 and 29 Tighten all hex head screws uniformly 2 Place the actuator gasket k
23. NG COUPLING y ACTUATOR E0678 Figure 6 Unthreading the Adjusting Coupling Startup Adjustment and Shutdown If required tank vents normal and emergency must be in place and operating Startup Always open the tank shutoff valve prior to the inlet shutoff valve Failure to do so could result in inlet pressure being applied to the actuator casing potentially damaging it Refer to Figure 5 1 Open the tank and sensing line shutoff valves between the Type ACE97 valve and tank 2 A tank vapor space pressure gauge should be installed and visible 3 Slowly open the inlet shutoff valve to the pad valve and leave it fully open 4 Monitor the tank vapor space pressure ADJUSTING SCREW E0679 Figure 7 Changing the Pad Setpoint Adjustment The setpoint of this unit is factory set If an adjustment is to be made it should be made in small increments while the unit is controlling tank pressure It is difficult to make field adjustments due to the slow changes in tank pressure To change the pad blanketing setpoint 1 Disconnect the tubing from the depad pilot valve See Figure 6 Loosen the locknut See Figure 7 but maintain its position in relation to the adjusting coupling Doing so leaves the depad setpoint unchanged Separate the depad pilot valve from the actuator by unthreading and removing Unthread and remove the adjusting coupling Increase the pad
24. R f 114 22 Mine 27 H Figure 20 Actuator Parts Type ACE97 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
25. Type ACE97 Pad Off Depad On Product Description The Type ACE97 Pad Depad valve is a self contained pilot operated valve that maintains a blanket of inert gas on top of a stored product to protect it from atmospheric contamination reduces combustibility decreases vaporization controls vapor space pressure during pump in and pump out operations and prevents the tank from entering a vacuum condition and collapsing upon itself The Type ACE97 valve provides excellent and accurate pressure control of the vapor space in the tank Blanketing pressure is kept to a minimum in order to conserve the use of blanketing gas Pad tank blanketing is used to describe the process of replacing the vapor space of a storage tank with an inert gas Depad vapor recovery is used to describe the process of relieving or venting the vapor space as a result of pressure rise Tank and vapor recovery connections are available to meet most customer requirements A Single Array Manifold S A M provides a single tank and sensing connection and is required for tanks having a single nozzle Accessories include gauges purge meters pressure switches and check valves Principle of Operation Type ACE97 pilot operated valves except for the NPS 1 2 DN 15 pad valve control the vapor space pressure over a stored liquid The unit is stainless steel and is controlled by a very large actuator diaphragm The oversized actuator diaphragm offers high sensi
26. X0012 25 Piston main valve NPS 1 and 2 DN 25 and 50 pad valves C 1 through 4 C 7 5 through 10 C 20 through 60 26 Spring pad main valve NPS 1 DN 25 pad valve C 1 through 4 25 to 50 psig 1 7 to 3 4 bar 51 to 120 psig 3 5 to 8 27 bar 121 to 200 psig 8 3 to 13 8 bar C 7 5 through 10 25 to 50 psig 1 7 to 3 4 bar 51 to 120 psig 3 5 to 8 3 bar 121 to 200 psig 8 3 to 13 8 bar NPS 2 DN 50 pad valve C 20 through 60 25 to 50 psig 1 7 to 3 4 bar 51 to 120 psig 3 5 to 8 3 bar 121 to 200 psig 8 3 to 13 8 bar GC053203X02 GC053211X02 GC053219X02 GC220704X22 GC220705X22 GC220706X22 GC220705X22 GC220706X22 GC220709X22 GC220714X22 GC220712X22 GC220713X22 Key 27 28 29 91 34 35 36 37 38 39 40 41 42 46 49 50 51 52 75 76 Description Gasket bonnet pad valve Lock Washer 28 required Hex Head Machine Screw 4 required 1 2 DN 15 body pad valve NPS 1 DN 25 body pad valve NPS 2 DN 50 body pad valve Hex Nut 21 required Spring Shim NPS 1 DN 25 pad valve 25 to 50 psig 1 7 to 3 4 mbar Lower Cage NPS 1 and 2 DN 25 and 50 pad valves Spring pad pilot valve Piston pad pilot valve Diaphragm pad and depad pilot valves Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM O ring Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM Uppe
27. alve is Fully Open psig bar psig bar psig bar psig bar 121 8 3 120 8 3 103 tA 60 4 1 130 9 0 129 8 9 111 7 6 68 4 7 140 9 6 139 9 6 120 8 3 77 5 3 150 10 3 149 10 3 129 8 9 86 5 9 160 11 0 159 10 9 138 9 5 95 6 5 170 11 7 169 11 7 147 10 1 104 7 2 180 12 4 179 12 3 156 10 8 113 7 8 190 13 1 189 13 0 165 11 4 122 8 4 200 13 8 199 13 7 174 12 0 134 9 2 Annual Maintenance 1 Visually inspect the unit to ensure tight connections tight seals and safe operation 2 Observe the pad and depad tank blanketing and vapor recovery pressures Pad Valve Diagnostics Note A pressure gauge must be installed in the pad valve diagnostic port to perform diagnostic analysis See Figures 2 through 4 3 Inspect the inlet pressure for the proper range stamped on the valve nameplate 4 Visually inspect valve for any external wear 5 If there is evidence of leakage or unstable internal motion a rebuild with seal replacement and relubrication may be in order Diagnostics are an optional feature of the NPS 1 and 2 25 and 50 Type ACE97 valves and aid in evaluating valve operation The diagnostic analysis relies on the relationship of pad valve pilot pressure and the inlet pressure of the pad valve The basic relationships 11 Type ACE97 are shown in Table 2 In order to evaluate a valve examine the valve nameplate to determine the and inlet pressure range main valve spring There are four pressures
28. alves Install the bonnet key 87 and secure with cap screws and lock washers keys 160 and 161 Tighten uniformly 8 Connect all tubing lines key 143 9 Reinstall the valve according to the instructions in the Installation section of this manual Parts Ordering Each Type ACE97 Pad Depad valve is assigned a serial number printed on the nameplate on the main valve actuator Refer to this number when contacting your local Sales Office for assistance or when ordering replacement parts When ordering a replacement part be sure to reference the key number for each needed part and include the complete 11 character part number from the following parts list Type ACE97 Parts List Key Description Parts Kits NPS 1 2 DN 15 pad valve includes keys 16 27 38 39 and 41 Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylenepropylene EPDM FDA NPS 1 DN 25 pad valve 1 through 4 Part Number 19B6041X012 19B6041X022 19B6041X032 19B6041X042 includes keys 16 19 23 24 27 38 39 41 and 46 Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylenepropylene EPDM FDA NPS 1 DN 25 pad valve 5 through 10 19B6043X012 19B6043X022 19B6043X032 19B6043X042 includes keys 16 19 23 24 27 38 39 41 and 46 Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylenepropylene EPDM FDA NPS 2 DN 50 pad valve 20 through 60 includes keys 16 19 2
29. e the main valve stem key 75 3 Carefully install the stem seal key 81 closed end first into the seal retainer key 80 97 4 Slide the seal retainer key 80 over the stem assembly with the open end of the stem seal key 81 facing up Take care not to scratch the stem Slide the seal retaining plate key 83 over the stem assembly with the counter bore facing up 5 For 1 and 2 NPT Main Valves Install the spring key 84 into the groove of the seal retaining plate key 83 and spring guide key 85 Secure with the retaining ring key 86 Use a small flat screw driver to engage the notch in the retaining ring Twist to install the retaining ring into the groove For NPS 3 and 4 DN 80 and 100 Main Valves Install the spring key 84 into the groove of the seal retaining plate key 83 and spring guide key 85 Secure with a cap screw and lock washer keys 126 and 79 6 For 1 NPT and NPS 3 and 4 DN 80 and 100 main valves place the O ring key 82 into the main valve body key 91 For 2 NPT main valve place the O ring key 82 into the groove of the seal retainer key 80 Carefully install the stem and spring sub assembly Press down on the stem key 75 to ensure it 15 able to move Install the second key 82 7 For 1 Main Valve Lubricate the threads of the bonnet key 87 with anti seize Thread into place and tighten For 2 NPT and NPS 3 and 4 DN 80 and 100 Main V
30. epad main valve 4 required NPS 4 DN 100 depad main valve 6 required 161 Lock Washer 2 NPT and NPS 3 DN 80 depad main valve 4 required NPS 4 DN 100 depad main valve 6 required 163 Actuator Diaphragm Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA 164 Caution Tag depad adjustment 165 Nipple NPS 1 2 x 3 DN 15 x 80 NPS 1 2 DN 15 pad valve 166 Housing Inlet Filter NPS 1 2 DN 15 pad valve 167 Filter Element NPS 1 2 DN 15 pad valve Part NUmber GC023226X02 973300 52 973301 52 973303 12 GC973302X52 GC060214X02 GC060214X02 GC060908X02 GC060908X02 GC071102X02 GC071102X12 071102 22 GC090807X02 GC023154X02 GC040711X02 GC200211X02 21 Type ACE97 I DN 25 T DEPAD Type ACE97
31. ey 27 onto the pad valve 3 Attach the lower actuator case key 113 to the pad valve with cap screws lock washers keys 29 and 28 and seal bushings key 46 NPS 1 DN 25 valve only Place an O ring key 118 into the groove of the diaphragm bolt key 117 Apply Loctite 222 to the threads of the diaphragm bolt key 117 Build the diaphragm sub assembly with the lower diaphragm plate key 116 diaphragm key 163 and upper diaphragm plate key 119 Fasten with the diaphragm bolt key 117 and actuator stem key 94 Place the diaphragm sub assembly into the lower actuator case key 113 and align the diaphragm flange bolt holes with the actuator case flange holes Install the range spring s key 95 and or 96 and associated hardware per your spring range as shown in Figure 12 Set the upper actuator case key 114 into position aligning the flange holes 10 Place cap screws key 29 in the aligned flange holes and fasten with lock washers and nuts key 28 and 31 Tighten uniformly Depad Main Valve Assembly Refer to Figures 16 17 and 18 1 For the depad main valve assembly use Dow Corning 3452 chemical resistant lubricant Build the stem key 75 assembly by installing the seat O ring key 76 and cage key 77 with the cap screw key 78 and lock washer key 79 The stem may be held on the flat sides using soft jaws for this purpose 2 Lubricat
32. fore removing the valve from the line ensure that it is isolated from the gas supply pressure and that all pressure has been released from the valve All tank connections must be closed or sealed in accordance with your plant s operating and safety procedures If installed electrical connections to the explosion proof switch must be deactivated before opening the enclosure or disconnecting the wiring in accordance with codes and safety practices Refer to the following instructions and to Figures 11 through 20 in the Parts Ordering section when performing assembly and disassembly operations It is recommended that all seals and diaphragms be replaced whenever a valve is disassembled and re assembled Parts kits are available through your local Sales Office Note Have your model number serial number inlet pressure and set pressure range available when ordering parts Valve information is on the nameplate on the upper actuator case The Type ACE97 Pad Depad valve should be viewed as four connected elements These include the pad valve the actuator the depad pilot valve and the depad main valve See Figure 1 Disassembly When performing disassembly operations please take care not to adjust or alter the pressure setpoints Read the following instructions carefully before proceeding Depad Pilot Valve Removal Refer to Figures 11 and 19 1 Disconnect the tubing lines key 143 three connections from the depad
33. he nameplate attached to the upper actuator case 1 Use qualified personnel when installing operating where conditions exceed any ratings of the adjacent piping piping connections or compatibility of valve materials with process fluids To avoid such injury or damage provide pressure relieving or pressure limiting devices as required by Title 49 Part 192 of the U S Code of Federal Regulations by the National Fuel Gas Code Title 54 of the National Fire Codes of the National Fire Protection Agency or by other applicable codes to prevent service conditions from exceeding those limits and maintaining valves Before installing inspect the main valve pilot and tubing for any shipment damage or foreign material that may have collected Ensure that the body interior is clean and the pipelines are free of foreign material Apply pipe compound only to the external pipe threads with a threaded body or use suitable line gaskets and good bolting practices with a flanged body Inspect the nameplate on the upper actuator case It displays the model number serial number blanketing gas supply pressure range maximum inlet pressure C value and set pressures These must agree with the system that you are Padding blanketing or Depadding recovering The serial number will be needed in any communication with your local Sales Office 3 Clean the gas padding blanketing supply lines of all dirt and foreign material bef
34. iaphragm plate key 116 Hold the actuator stem key 94 with soft jawed pliers and unthread the diaphragm bolt key 117 97 ROLLING DIAPHRAGM KEY 38 POPPET STEM KEY 42 CROSS DRILLED HOLE PISTON O RING KEY 37 KEY 39 LOWER CAGE KEY 35 W8161 Figure 9 NPS 1 and 2 DN 25 and 50 Pad Valve Cage Assembly 6 Separate the upper diaphragm plate key 119 lower diaphragm plate key 116 and diaphragm key 163 7 Remove the hex head cap screws and lock washers keys 29 and 28 that attach the lower actuator case key 113 to the body key 18 or bonnet key 17 8 Remove the lower actuator case key 113 and gasket key 27 from the valve body key 18 or bonnet key 17 Pad Valve Disassembly For NPS 1 2 DN 15 pad valve no further disassembly steps are required Proceed to Pad Valve Cage Disassembly for NPS 1 2 DN 15 valve section For NPS 1 and 2 DN 25 and 50 pad valves perform the following procedures for pad valve disassembly Refer to Figures 14 and 15 1 For NPS 2 DN 50 valve Remove the cap screws and lock washers keys 50 and 51 that attach the bonnet key 17 to the body key 18 2 Lift the bonnet key 17 from the body key 18 3 Remove the piston key 25 main valve spring key 26 spring shim key 34 if required and spring guide key 49 if required from the bonnet key 17 4 Unthread the screw key 20 and remove from
35. involved in evaluating a valve actual inlet pressure pressure to start opening pilot valve pressure to start opening main valve and pressure to fully open main valve Actual Inlet Pressure The gas pressure supplied to the inlet of the valve This is the maximum diagnostic pressure Pressure to Start Opening Pilot Valve The diagnostic pressure drops to this value as the valve senses decreasing tank pressure The main pad valve remains closed at this pressure Pressure to Start Opening Main Valve The diagnostic pressure drops to this level as the tank pressure decreases the valve setpoint The pilot is fully open at this pressure Pressure to Fully Open Main Valve At this point both the main valve and pilot valve are fully open and supplying gas to the tank Follow these steps and refer to the diagnostics tables Tables 3 through 11 to evaluate a valve under actual operating conditions 1 Select the table Tables 3 through 11 that corresponds to the C and inlet pressure range of your pad valve 2 Determine the actual valve operating inlet pressure in the first column of the diagnostics table 3 In the second column of the table determine the pressure of the pilot as it opens 4 Determine the diagnostic pressure for the start to open pressure of the main valve in the third column 5 The fourth column displays the diagnostic pressure for the full open pressure of the main valve Disassembly and Assembly Be
36. key 42 insert a small drill bit into the cross drilled holes on the poppet to turn and loosen Unthread the poppet from the piston and remove the rolling diaphragm key 38 Depad Main Valve Disassembly Refer to Figures 16 17 and 18 1 Remove the tubing key 143 from the end of the bonnet key 87 2 For 1 NPT Main Valve Unthread the bonnet key 87 from the depad valve body key 91 Remove the retaining ring key 89 cap key 90 and key 88 For 2 NPT and NPS 3 and 4 DN 80 and 100 Main Valves Unthread the flange bolts key 160 and washer key 161 Remove the bonnet key 87 from the depad valve body key 91 3 Gently remove the internal components by lifting the depad main valve stem key 75 When working with the main valve stem sub assembly take care not to scratch the coated surface the surface that operates in contact with the seal key 81 Refer to Figure 16 17 or 18 4 Hold the main valve stem key 75 on its flat sides in a soft jawed vise Apply enough pressure to keep the main valve stem from turning 5 Remove the cap screw key 78 lock washer key 79 and cage key 77 6 Separate the cage key 77 and seat O ring key 76 from the main valve stem key 75 The main valve return spring key 84 is compressed and could cause damage or injury Remove this spring with care 7 For 1 and 2 NPT Main Valves Remove spring guide key 85 by removing the retaining ring key 86
37. l O rings gaskets and seals should be lubricated with a good grade of general purpose lubricant and installed gently rather than forced into position Approved lubricants sealants thread protectors and adhesives are as follows Lubricants Dow Corning 111 Dow Corning 3452 Chemical Resistant Lubricant Thread Protector Anti Seize Sealant Loctite PST 592 Polytetrafluoroethylene PTFE Tape Adhesive Loctite 222 Be certain that nameplates are updated to accurately indicate any field changes in equipment materials service conditions or pressure settings Monthly Maintenance 1 Visually inspect the unit to ensure tight connections tight seals and safe operation 2 Observe the pad and depad tank blanketing and vapor recovery pressures 3 Inspect the inlet pressure for the proper range stamped on the valve nameplate manufactured or furnished by Regulator Technologies Table 3 Diagnostics Table C 1 through 4 Inlet Pressure Range Spring 25 to 50 psig 1 7 to 3 4 bar ACTUAL INLET SUPPLY DIAGNOSTIC PORT PRESSURE PRESSURE TO VALVE Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open psig bar psig bar psig bar psig bar 25 1 7 24 1 7 9 0 62 2 0 14 30 2 1 29 2 0 18 0 90 6 0 41 35 2 4 34 2 3 16 1 41 9 0 62 40 2 8 39 27 20 1 4 13 0 90 45 3 1 44 3 0 24 1 4 17 1 2 50 3 4 49 3 4 28 1 9 21 1 4
38. mall drill bit into the cross drilled hole on the follower key 103 turn and tighten the nut key 31 and internal parts 8 Install the return spring key 101 onto the seal retainer key 127 9 Place the gasket key 102 into the cavity of the upper cage key 106 and thread the upper cage onto the center cage key 108 10 Place the rain cap key 109 onto the threaded portion of the lower cage key 110 The bead on the rolling diaphragm key 38 must be positioned to engage the groove in the lower cage 11 Thread the lower cage key 110 onto the center cage key 108 Tighten all parts uniformly 12 Lubricate the threads of the coupling key 107 with anti seize Thread the lower cage key 110 onto the coupling key 107 one full turn 97 Note The locknut key 99 must be in place when attaching the lower cage key 110 and coupling key 107 to the spring case key 120 13 Thread the coupling key 107 onto the spring case key 120 one full turn while restraining the coupling from turning against the lower cage key 110 Turn the coupling while restraining the center cage key 108 and spring case Note The coupling key 107 is left hand threaded on the end with the knurled rough finish The opposite end is right hand threaded Pad Valve Cage Assembly NPS 1 2 DN 15 valve Refer to Figures 8 and 13 1 Place the rolling diaphragm key 38 over the threaded portion of
39. 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 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 lt EMERSON Proce agement Emerson Process Management Regulator Technologies Inc 2001 2011 All Rights Reserved
40. ore connecting them to the Type ACE97 Pad Depad valve 4 The valve should be mounted above the tank with the actuator case in a horizontal position Four connections are required see Figure 5 a Blanketing gas supply to the valve b Vapor recovery process connection vent c System tank connection d Sensing line to the tank Piping Considerations Piping must be capable of supporting the weight of the system Use pipe supports when necessary Refer to Figure 5 Inlet Piping The padding blanketing gas supply line should be equipped with a Number 100 mesh strainer to remove dirt and pipe scale Inlet piping must be sized to adequately deliver padding blanketing gas at the specified inlet pressure under full flow conditions Undersized piping may inadequately deliver Padding blanketing gas at the specified inlet pressure under full flow conditions This may result in unacceptable performance under high demand conditions Outlet Piping Valve outlet is piped into the tank vapor space Outlet piping should be self draining to the tank and of equal or greater size than the Type ACE97 valve tank connection The valve should be situated above and as close as possible to the tank vapor space for best performance Unnecessarily long or restricted outlet piping may result in poor setpoint control Type ACE97 Sensing Line The sensing line should be 1 2 inch 13 mm tubing or pipe must slope toward the tank and sh
41. ositioned so that it sits in the groove of the lower cage See Figure 9 If it does not the rolling diaphragm was installed upside down in step 2 7 Remove the lower cage key 35 8 Lubricate the piston key 37 and lower cage key 35 groove with Dow Corning 111 Install the pilot spring key 36 into the piston key 37 and re install the lower cage key 35 10 Hold the sub assembly together and 11 insert it into the bonnet key 17 Press firmly the bonnet O rings will offer resistance Press the poppet key 42 stem It should freely move up and down If it does not repeat the procedure to this point to determine the cause Pad Valve Assembly NPS 1 2 DN 15 valve Refer to Figure 13 1 Install O rings key 16 into the body key 18 2 Place the spring key 36 into the body key 18 cavity 3 Insert the cage key 52 and valve sub assembly into the body key 18 cavity Press the body key 18 and cage key 52 together to engage the rolling diaphragm bead into the groove Note Ensure that the rolling diaphragm bead is positioned so that it sits in the groove of the body see Figure 14 If it does not the rolling diaphragm was installed upside down in step 1 of the Pad Valve Cage Assembly NPS 1 2 DN 15 valve PISTON MAIN VALVE SPRING KEY 26 W8160 LOCK WASHER SCREW KEY 21 KEY 20 PLUG KEY 22 O RING KEY 23 PISTON MAIN
42. ould not contain low points or traps that could catch liquid The sensing line must enter the tank above the liquid level at a point that senses the vapor space pressure and is free from turbulence associated with tank nozzles or vents Note Best control is obtained when both connections to the tank are separate If the tank has only one available nozzle contact Regulator Technologies for alternate methods of installation A Single Array Manifold S A M is available for such situations Vent Connection The vent connection must be self draining facing away from the valve and of equal or greater size than the valve tank connection Tank Venting The tank may require normal and emergency vents The Type ACE97 Pad Depad valve does not perform these functions it only controls the vapor space pressure under process conditions Diagnostic Gauges on off diagnostic gauge is mounted on the depad main valve at the inlet to the cylinder The face on the gauge is marked to indicate whether the main pad valve is opened closed or throttled Shutoff Valves Note Safety considerations may dictate shutoff valves between the tank and Type ACE97 valve Inlet isolation valves are desirable for servicing the Type ACE97 valve If this valve was not ordered with an inlet pressure gauge it is advisable to install a gauge between the inlet isolation full port valve and the padding blanketing valve Type ACE97 TUBI
43. pring Pad 0 5 to 3 inches w c 1 to 7 mbar Depad 4 to 10 inches w c 10 to 25 mbar Pad 0 5 to 7 inches w c 1 to 17 mbar Depad 4 to 6 inches w c 10 to 15 mbar Pad 3 to 13 inches w c 7 to 32 mbar Depad 4 to 16 inches w c 10 to 40 mbar Pad 4 to 10 inches w c 10 to 25 mbar Depad 16 to 78 inches w c 40 to 194 mbar Pad 0 5 to 1 4 psig 34 to 97 mbar Depad 0 25 to 1 psig 17 to 69 mbar Pad 1 0 to 2 2 psig 69 to 152 mbar Depad 0 25 to 2 psig 17 to 138 mbar 96 Spring one of two springs used for this range See Figure 12 Pad 4 to 10 inches w c 10 to 25 mbar Depad 16 to 78 inches w c 40 to 194 mbar 97 Upper Spring Guide actuator Pad 3 to 13 inches w c 7 to 32 mbar Depad 4 to 16 inches w c 10 to 40 mbar Pad 4 to 10 inches w c 10 to 25 mbar Depad 16 to 78 inches w c 40 to 194 mbar Pad 0 5 to 1 4 psig 34 to 97 mbar Depad 0 25 to 1 psig 17 to 69 mbar Recommended Spare Part 20 Part NUmber GC053314X02 GC053311X02 GC053317X02 GC053327X02 GC220723X22 GC220722X72 GC220724X22 GC220729X22 GC050511X02 GC050510X02 GC050512X02 GC053329X02 GC061104X12 GC052919X02 GC052923X52 GC052921X52 GC052929X52 1F115306992 1F1153X0022 1F1153X0062 1F1153X0032 GC061104X32 GC053313X02 GC052709X02 GC052718X52 GC060220X02 GC053303X02 GC220730X72 GC220718X72 GC220719X72 GC220720X72 GC220721X72 GC220725X72 GC220719X72 GC050509X02 GC050509X02 GC050509X0
44. r Cage NPS 1 and 2 DN 25 and 50 pad valves O ring Nitrile NBR Ethylenepropylene EPDM FDA Fluorocarbon FKM Perfluoroelastomer FFKM Poppet pad pilot valve Seal Bushing 4 required NPS 1 DN 25 pad valve Spring Guide pad valve 25 to 50 psig 51 to 120 psig 1 1 7 to 3 4 bar 3 5 to 8 3 bar Hex Head Cap Screw 4 required Lock Washer 4 required Cage NPS 1 2 DN 15 pad valve Stem 1 NPT depad main valve 2 NPT depad main valve NPS 3 DN 80 depad main valve NPS A DN 100 depad main valve O ring 1 NPT depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM 2 NPT depad main valve Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM FDA Perfluoroelastomer FFKM NPS 3 DN 80 depad main valve Nitrile NBR Recommended Spare Part Part NUmber GC070429X32 GC060906X02 GC060220X02 GC060219X02 GC060220X02 1A3457K0012 GC053209X02 GC053002X02 GC220707X22 GC053202X02 GC071101X02 GC071101X22 GC071101X12 GC071101X32 102888 0032 102888 0042 102888 0052 102888 0022 GC053001X02 10A0042X052 10A0042X072 10A0042X012 10A0042X062 GC053201X02 GC071202X32 GC050505X22 GC060224X12 GC060905X02 GC053003X02 GC050616X02 GC050616X12 GC050616X22 GC050616X32 GC072006X02 GC072006X12 GC072006X52 GC072006X62 16A1178X042 16A1178X022 16A1178X062 16A1178X052 17B1364X042 Type ACE97 Key Description
45. the depad pilot valve to secure the setpoint adjustment Type ACE97 DEPAD DIAGNOSTIC GAUGE TANK VAPOR SPACE PRESSURE GAUGE VENT CONNECTION SENSING CONNECTION d p SENSING LINE F L TANK CONNECTION TANK VALVE DX LE VAPOR SPACE D PAD DIAGNOSTIC GAUGE INLET PRESSURE GAUGE INLET VALVE ES LINE STRAINER BLANKETING GAS 6G SUPPLY LINE BLANKETING GAS CONNECTION SHUTOFF VALVE KH E0629 Figure 5 Type ACE97 Pad Depad Valve Installation Additionally physical damage to the tank blanketing system could result in personal injury and property damage due to escaping gas or tank contents To avoid such injury and damage install the tank blanketing valve in a safe location Installation and Startup Personal injury equipment damage or leakage due to escaping accumulated gas or bursting of pressure containing parts may result if this gas blanketing system is overpressured or installed where service conditions could exceed the limits given in the Specifications section or on the valve nameplate or The Type ACE97 Pad Depad valve is assembled and preset to the customer specified pressure and setpoint The pressure ranges of the valve are stamped on t
46. tivity to changes in tank pressure When a storage tank cools and tank vapors condense Type ACE97 pad tank blanketing valves replace the condensing vapors with an inert gas to prevent internal tank pressure from decreasing Positive tank pressure prevents outside air from contaminating the product and reduces the possibility of atmospheric pressure collapsing the tank Additionally Type ACE97 valves provide depad vapor recovery capabilities through the depad main valve and depad pilot valve When the temperature outside the tank rises causing the vapor inside the tank to expand Type ACE97 depad valve vents the excess tank pressure to a safe place LOADING PRESSURE EXHAUSTED BACK TO TANK Type 97 CN ON OFF DIAGNOSTIC GAUGE DEPAD PILOT ADJUSTABLE DEADBAND CONTROLLED PRESSURE RANGE SPRING SEAT ROLLING DIAPHRAGM MAIN SENSING CONNECTION DIAGNOSTIC VALVE SPRING CLOSED PILOT m o ENNNNN INLET PRESSURE ATMOSPHERIC PRESSURE TANK PRESSURE PILOT LOADING PRESSURE VENT HEADER PRESSURE INERT GAS IN VALVE CONNECTION Figure 4 Type ACE97 Pad Off Depad Off NPS 1 and 2 DN 25 and 50 Pad Valves Figure 2 When tank pressure decreases below the pad setpoint due to pump out operations or thermal cooling the actuator diaphragm moves do
47. wnward pushing open the pad pilot This creates flow from the pad loading chamber to downstream When pad loading pressure decreases the force created by inlet pressure on the pad main valve plug overcomes the main spring force and opens the main valve plug allowing flow through the pad valve to the tank Once tank pressure reaches pad setpoint the pad pilot closes pad loading pressure equalizes with inlet pressure and the pad valve closes NPS 1 2 DN 15 Pad Valve Not Shown The NPS 1 2 DN 15 pad valve has a main valve only When tank pressure decreases below the pad setpoint the actuator diaphragm moves downward pushing the valve plug open and allowing flow through the pad valve to the tank Depad Figure 3 When tank pressure increases above the depad setpoint due to pump in operations or thermal heating the actuator diaphragm moves upward and pushes open the depad pilot This releases depad loading pressure nitrogen or other supply gas When depad pilot loading pressure decreases the depad main valve opens by a spring and allows flow from the tank to the vent or recovery system The blanketing padding gas is used as the pilot fluid The link between the actuator and the depad main valve is provided by the depad pilot valve which is located on top of the actuator The depad pilot valve is connected to the actuator by an adjustable coupling which can be rotated to adjust the depad setpoint A locknut is provided on
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