Emerson 92C Instruction Manual
Contents
1. cleaning or replacing any pilot parts or of cycling erratic control or too high or too low an outlet control pressure is noted Perform only those procedures in this section required to correct the problem Key numbers refer to Figure 11 Note Before performing any maintenance loosen the hex nut key 16 if used and turn the adjusting screw key 15 or handwheel key 31 counterclockwise until all compression is removed from the control spring key 12 Remove the pilot spring from the pipe nipple and connectors keys 82 and 83 Figure 12 1 Unscrew the plug guide key 2 Remove the screen key 77 inner valve key 4 plug spring key 3 and stem key 7 Unscrew the orifice key 5 Examine the orifice and plug seating surfaces for damage 2 Clean and replace parts as necessary Apply sealant to the orifice threads Thread the orifice into place and tighten using 19 to 25 foot pounds 26 to 34 Nem of torque 3 Handle parts carefully and place the plug spring key 3 in the plug guide key 2 Slide the inner valve key 4 over the spring and into the plug guide Place the screen key 77 onto the plug guide Place the stem key 7 in the center hole of the plug guide Apply sealant to the plug guide threads and screw the guide plus attached parts into the body key 1 4 Remove the pipe plug key 74 Then remove the pipe plug key 94 Clean and replace the pipe plugs as necessary 5 Apply sealant to2. make sure it is correct for the application Pressure Loaded Regulators To install a pressure loaded regulator 1 Install a shutoff valve in the pressure loading piping or tubing 2 Connect the piping or tubing to the 1 4 NPT connection in the diaphragm flange key 2 Figure 8 If the loading regulator used with the pressure loaded regulator does not provide internal relief an atmospheric bleed e g no 60 drill size is required if the loading supply is air or a downstream bleed line is required if the loading supply is steam This installation is shown in Figure 4 The pressure setting of a pressure loaded regulator is adjusted and determined by the pressure loading device In all cases check the pressure setting to make sure it is correct for the application Startup The maximum inlet pressure for a specific construction is stamped on the main valve nameplate Use pressure gauges to monitor upstream and downstream pressures during startup To put the regulator into operation 1 Open the control line shutoff valve 2 For a pilot operated regulator open the downstream block valve For a pressure loaded regulator open the shutoff valve in the pressure loading piping or tubing 3 Slowly open the upstream block valve 4 If a bypass line is used slowly close the bypass line block valve 5 To adjust the downstream pressure follow the appropriate procedure a For a pilot operated regulator loos
3. 1534X012 Stainless Steel 26A1534X022 Orifice For 1 2 and 3 4 NPT body 9 16 inch 14 mm 416 Stainless Steel 16A1529X012 For 1 NPT body 3 4 NPT 19 mm 416 Stainless Steel 16A1529X012 For 3 4 and 1 NPT body 9 16 inch 14 mm Ethylenepropylene EPDM 410 416 Stainless Steel 1E399535132 Valve Plug heat treated 416 Stainless Steel 1E398146172 Valve Plug Guide Brass for Gray Cast Iron body 1E398214012 416 Stainless Steel for Steel Stainless Steel body 1E398235132 Stem Guide Bushing heat treated 416 Stainless Steel included in key 1 For Gray Cast Iron body 1E398535132 For Steel Stainless Steel body 16A1530X012 Valve Plug Spring Stainless Steel 1E398837022 Diaphragm Stainless Steel 2 required 1E399236012 Diaphragm Gasket 2 required for Gray Cast Iron body 3 required for Steel Stainless Steel body with Ethylenepropylene EPDM seat 16A1526X012 Steel Stainless Steel body with metal seat 3 required 1E3993X0012 Steel Stainless Steel body with metal seat High temperature 3 required 16A1526X022 Pitot Tube For Gray Cast Iron body Copper NPT 16A1525X012 For Steel body Copper NPT 1E399417012 CL150 RF 16A1525X012 CL300 RF and PN 16 25 40 1E399417012 Recommended spare part Key 10 11 12 14 15 Description Pitot Tube continued For Stainless Steel body 304 Stainless Steel CL150 RF CL300 RF and PN 16 25 40 Stem Assembly 416 Stainless Steel Cap Screw Zinc plated steel 8 required For Gr
4. 6 9 14B9941X012 Unpainted 0 192 4 88 o 1 96 49 8 temperature over 500 F 250 C 80 to 200 5 5 to 17 2 14B9940X012 Unpainted 0 282 7 16 Table 3 Flow Coefficients ORIFICE SIZE WIDE OPEN FOR RELIEF SIZING k Inches mm C C 9 16 14 170 8 5 34 0 67 3 4 19 240 12 7 1 1 C x 20 C Table 4 IEC Sizing Coefficients ORIFICE SIZE BODY SIZE 9 16 inch 14 mm 3 4 inch 19 mm NPS DN X X Fp 1 2 15 0 38 ze 0 73 0 82 3 4 or 1 20 or 25 0 44 0 73 0 38 0 82 6492 SAFETY OVERRIDE PILOT TOP VIEW TYPE 6492HM SAFETY OVERRIDE PILOT TYPE 6392 PILOT SIDE VIEW E0656 BLOCK VALVE N TYPE 6492HM SAFETY OVERRIDE PILOT TYPE 6392 PILOT BLOCK VALVE BLOCK VALVE TYPE 92C MAIN VALVE TYPE 92C MAIN VALVE E0657 TYPICAL TYPE 92C WITH TYPE 6492HM OR 6492HTM SAFETY OVERRIDE PILOT INSTALLATION Figure 3 Typical Pilot Operated Type 92C Regulator Installations continued Principle of Operation Pilot Operated Regulator Refer to Figure 5 Pilot supply pressure piped from the inlet side of the main valve to the pilot inlet connection Downstream pressure registers under the main valve diaphragm through the pitot tube and under the pilot diaphragm through the downstream control line When downstream pressure decreases to a value below the setting of the pilot regulator spring the pilot spring forces the pilot valve plug open increasing the loadin
5. 72 548 3574 Asia Pacific Singapore 128461 Singapore Tel 65 6770 8337 Europe Bologna 40013 Italy Tel 39 051 419 0611 Chartres 28008 France Tel 33 2 37 33 47 00 Part Number 0500103809W 1C559926232 1C5599X0012 15A6002XY72 15A6002X642 15A6002XY52 15A6002X632 TESCOM Emerson Process Management Tescom Corporation USA Headquarters River Minnesota 55330 2445 USA Tels 1 763 241 3238 1 800 447 1250 Europe Selmsdorf 23923 Germany Tel 49 38823 31 287 Asia Pacific Shanghai 201206 China Tel 86 21 2892 9499 The Emerson logo is a trademark and service mark of Emerson Electric Co All other marks are the property of their prospective owners Fisher is a mark owned by Fisher Controls International LLC a business of Emerson Process Management The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or 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 Regulator Technologies Inc does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any Emerson Process Management Regulato
6. DIATE PRESSURE Figure 6 Type 92C with Type 6492HM Safety Override Pilot Operational Schematic Type 92C Note Since clogged vent cause improper regulator functioning install and maintain the Type 92C regulator so that the 6392 pilot spring case vent remains clear and unobstructed To install a pilot operated regulator 1 Connect a downstream control line of at least 1 4 inch 6 4 mm diameter pipe bushed down to the 1 4 NPT control line connection in the pilot body 2 For both body sized and swaged pipelines locate the pipeline control line connection in a section of straight pipe at least 10 pipe diameters away from the regulator or swage 3 Do not locate the pipeline control line connection in an elbow swage or other area where turbulence or abnormal velocities may occur 4 f the pilot is mounted with the control line in a position other than horizontal make sure the control line is sloped away from the pilot so that condensate can drain into the pipeline 5 Install a shutoff valve not a needle valve in the control line to completely isolate the pilot during maintenance 6 Install a pressure gauge in the control line or near the regulator to aid in setting the outlet pressure Each pilot operated regulator is factory set for the pressure setting specified on the order If no setting is specified the unit is factory set at 30 psig 2 1 bar In all cases check the spring setting to
7. Instruction Manual Form 5135 December 2012 Type 92C Type 92C Steam Regulator Fisher regulators must be installed operated and maintained in accordance with federal state and local codes rules and regulations and Emerson Process Management Regulator Technologies Inc instructions 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 92C regulator Introduction Scope of the Manual This instruction manual provides installation maintenance and parts ordering information for the Type 92C steam self powered control valve and the Type 6392 pilot Both the pilot operated and the pressure loaded constructions are covered The Type 92C is also available with a Type 6492HM or 6492HTM safety override pilot The pressure loading device and accessories used with this valve are covered in other manuals Description The Type 92C steam regulator is a gray cast iron steel or stainless steel pressure reducing regulator for steam or hot air service This regulator is available with a Type 6392 pilot for use as a pilot operated regulator Figure 1 or without a pilot for use as a pressure loaded regulator The pilot operated version uses inlet pressure as the operating medium no separate air sup
8. ME 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 sentinel relief valve to warn the operator that a valve has failed 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 Type 92C LOADING REGULATOR 16A1547 A A2523 1 r OPTIONAL PIPING FOR LOADING 92 REGULATOR BYPASS LINE Figure 4 Typical Pressure Loaded 92 Regulator Installation Installation Personal injury equipment damage or leakage due to escaping steam or bursting of pressure containing parts may result if this regulator is overpressured or is installed where service conditions could exceed the limits given in Specifica
9. NTI SEIZE COMPOUND APPLY LUBRICANT SEALANT 7 ANTI SEIZE LUBRICANT L S Figure 9 Type 6392 Pilot Assembly 1 4 NPT DOWNSTREAM CONTROL LINE CONNECTION 1 4 NPT REGULATOR SUPPLY CONNECTION 1 4 NPT PILOT SUPPLY CONNECTION Figure 10 Type 6392 Pilot Mounting Parts Type 92C 8 When maintenance is completed refer to the Startup section to put the regulator back in operation and to adjust the pressure setting Type 6392 Pilot Perform this procedure if inspecting cleaning or replacing any pilot parts Key numbers refer to Figure 9 unless otherwise specified All pilot maintenance may be performed with the pilot body key 1 attached to the pipe nipple and connector keys 23 and 24 Figure 10 unless the pilot body must be removed or the pilot is to be replaced as a unit 1 Loosen the jam nut key 15 and turn the adjusting screw key 16 counterclockwise until all compression is removed from the control spring key 13 Remove the loading tubing from the pilot outlet connection Remove the cap screws key 17 spring case key 2 control spring key 13 and upper spring seat key 14 from the body 2 Remove the lower spring seat key 9 the diaphragm key 7 and the diaphragm gasket key 8 from the body Lift out the stem assembly key 6 consisting of the stem and the pusher plate Clean the 1 16 inch 1 6 mm diameter pilot bleed hole Clean and replace parts as necessary and assemble the s
10. ations This section lists the specifications for Type 92C regulator Additional specifications for an individual regulator are found on the regulator body and pilot nameplates Body Sizes and End Connection Styles BODY MATERIAL SIZE Steel or CF8M Stainless Steel NPT CL150 RF CL300 RF or PN 16 25 40 Gray Cast Iron NPS 1 2 3 4 or 1 DN 15 20 or 25 Maximum Allowable Inlet and Pilot Supply Pressures Gray Cast Iron Construction 250 psig 17 2 bar Steel and Stainless Steel Construction 300 psig 20 7 bar Regulator Pressure Drops Minimum 15 psi 1 0 bar Maximum Operating 150 psi 10 3 bar for outlet pressure settings equal to or below 50 psig 3 4 bar 200 psi 13 8 bar for outlet pressure settings above 50 psig 3 5 bar Maximum Emergency Gray Cast Iron construction 250 psi 17 2 bar Steel and Stainless Steel construction 300 psi 20 7 bar Outlet Control Ranges See Table 1 Maximum Outlet Pressures Maximum Operating Outlet Pressure 150 psig 10 3 bar Maximum Emergency Outlet Casing Pressure Gray Cast Iron construction 250 psig 17 2 bar Steel and Stainless Steel construction 300 psig 20 7 bar Loading Pressure for Pressure Loaded Regulator See Figure 2 to determine loading pressure Maximum allowable loading pressure is 250 psig 17 2 bar for gray cast iron construction and 300 psig 20 7 bar for steel or stainless steel construction the max
11. ay Cast Iron body For Steel Stainless Steel body Drive Screw Stainless Steel 2 required Diaphragm Ring For Steel body Steel For Stainless Steel body Stainless Steel Type 6392 Pilot See Figure 10 Key 1 26 Description Pilot Body Gray Cast Iron Steel Stainless Steel Spring Case Gray Cast Iron Steel Stainless Steel Orifice heat treated 416 Stainless Steel Valve Plug heat treated 416 Stainless Steel Valve Plug Guide Brass for Gray Cast Iron pilot Heat treated 416 Stainless Steel For Steel pilot For Gray Cast Iron and Steel pilot Heat treated 416 Stainless Steel For Stainless Steel pilot Stem Assembly 416 Stainless Steel For Stainless Steel seat For Ethylenepropylene EPDM seat Diaphragm Stainless Steel 2 required Diaphragm Gasket Elastomer seat Stainless Steel seat Graphite Lower Spring Seat Aluminum Stem Guide Bushing 416 Stainless Steel Valve Plug Spring Stainless Steel Strainer Screen Stainless Steel Control Spring Standard springs 416 Stainless Steel 5 to 70 psig 0 34 to 4 8 bar Green 20 to 150 psig 1 4 to 10 3 bar Red Spring for use over 500 F 260 C 17 7 PH Stainless Steel 15 to 100 psig 1 0 to 6 9 bar 20 to 25 psig 1 4 to 1 7 bar Upper Spring Seat Zinc plated steel Jam Nut Plate steel Adjusting Screw Plated steel Cap Screw Zinc plated steel 6 required For Gray Cast Iron body For Steel Stainless Steel body Valve Plug Cap heat treated 416 Stainl
12. e pressure loading piping or tubing 4 Close the control line shutoff valve 5 Vent the regulator the control line and the pilot supply line to release any trapped pressure Maintenance Regulator parts are subject to normal wear and must be inspected periodically and replaced as necessary The frequency of inspection and replacement depends upon the severity of service conditions and upon applicable Federal state and local codes and regulations Type 92C Avoid personal injury or property damage from sudden release of pressure or uncontrolled steam or other process fluid Before starting disassembly Isolate the regulator from the process Release process pressure and Vent the pilot supply and main valve loading pressures This section contains separate procedures for regulator and pilot maintenance Type 92C Regulator Perform these procedures when replacing diaphragm the stem assembly the valve plug or the orifice Refer to the correct section for the required instructions Key numbers refer to Figure 8 unless otherwise indicated The regulator may remain in the pipeline during maintenance procedures unless the valve body is to be replaced or removed for repairs For pilot operated regulators the pilot may remain on the pipe nipple key 23 Figure 10 unless the pilot body key 1 Figure 9 is to be removed or the entire pilot replaced as a unit Replacing Diaphragm and Stem Assembly 1 For the pi
13. ease downstream pressure When downstream pressure increases it registers under the diaphragm and forces the stem and plug to move upward The upward force of the spring causes the valve to close which decreases flow to Type 92C the downstream system thus decreasing downstream pressure In hot air service supply air above the diaphragm becomes compressed and is vented to the atmosphere If a steam supply is used the steam is vented downstream Safety Override Pilot Principle of Operation Refer to Figure 6 Once placed in operation the upstream Type 6392 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 6392 pilot to open As the Type 6392 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 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 AS
14. en the jam nut key 15 Figure 9 Turn the adjusting screw key 16 Figure 9 into the spring case to increase the downstream pressure Turn the adjusting screw out of the spring case to decrease the downstream pressure When the required downstream pressure is maintained for several minutes tighten the jam nut to lock the adjusting screw in position b Fora pressure loaded regulator refer to the Instruction Manual of the pressure loading device for downstream pressure adjustment procedures Safety Override Pilot Startup and Adjustment 1 Loosen adjusting screws of the Type 6492HM or 6492HTM safety override pilot and Type 6392 intermediate pilot on the upstream valve until there is no spring load The screws should turn freely by hand 2 Loosen the adjusting screw of the Type 6392 pilot on the downstream valve until there is no spring load 3 Tighten the Type 6492HM or 6492HTM safety override pilot of the upstream valve all the way in to its highest spring setting OPTIONAL PIPING FOR STEAM LOADING LOADING REGULATOR RESTRICTION A MAIN VALVE DIAPHRAGM PITOT TUBE MAIN VALVE PLUG MAIN VALVE SPRING 36A1546 B A2947 EE INLET PRESSURE EX LOADING PRESSURE DOWNSTREAM PRESSURE Figure 7 Operational Schematic of Pressure Loaded Type 92C Regulator 4 Tighten the Type 6392 pilot of the upstream valve all
15. ess Steel Recommended spare part Part Number 1E399438072 16A1525X022 1E399438072 16A1524X012 1A914524052 1A782024052 1A368228982 16A1531X012 16A1531X022 Part Number 26A1518X012 26A1517X012 26A1517X022 2E391219012 22127522012 2J1275X0012 16A1511X012 16 1516 012 1E391814012 1E391835132 1E391835132 1E391835072 16 1515 012 16A1515X022 1E392836012 1E393104022 1E3931X0012 1E392309012 1E392235132 1E392437022 16 1512 012 1E392627012 1E392727142 14B9941X012 14B9940X012 1B798525062 14352224122 1 639928992 14407824052 14391724052 16A1549X012 Type 92C Type 6392 Pilot Mounting Parts Key Description 22 Loading Tubing Copper Stainless Steel 23 Pipe Nipple Steel 24 Connector Brass Stainless Steel 25 Elbow Brass Stainless Steel Types 6492HM and 6492HTM Part Number 16A1527X012 16A1527X022 1N584226232 15 6002 212 15 6002 642 15 6002 172 15 6002 632 Safety Override Pilots See Figure 12 Key Description 1 Pilot Valve Body WCC Steel CF8M Stainless Steel 2 Valve Guide Stainless Steel Steel body 416 Stainless Steel Stainless Steel body 316 Stainless Steel 3 Valve Spring 302 Stainless Steel 4 Inner Valve Steel body 416 Stainless Steel Stainless Steel body 316 Stainless Steel 5 Orifice Steel body 416 Stainless Steel Stainless steel body 316 Stainless Steel 7 Valve Stem Steel body 410 416 Stainless Steel Stainless Steel b
16. g pressure on the top of the main valve diaphragm The increased loading pressure on top of the main valve diaphragm and decreased downstream pressure under the main valve diaphragm force the main valve diaphragm and stem downward This opens the main valve plug and increases flow to the downstream system thus restoring downstream pressure to the setting of the pilot regulator spring When downstream pressure increases it registers under the pilot diaphragm and overcomes the force of the pilot spring This allows the pilot valve spring to close the pilot valve plug and causes excess loading pressure to bleed to the downstream system through the pilot bleed hole At the same time increased downstream pressure registers under the main valve diaphragm The decreased loading pressure on top of the main valve diaphragm and increased downstream pressure under the main valve diaphragm force the main valve diaphragm upward This allows the main valve plug spring to close the main valve plug reducing flow to the downstream system Pressure Loaded Regulator Refer to Figure 7 With a pressure loaded regulator a remote adjustable loading regulator provides loading pressure to the top of the main valve diaphragm Downstream pressure registers under the main valve diaphragm through the pitot tube When downstream pressure decreases it registers under the diaphragm and allows the stem and plug to move downward thereby opening the valve to incr
17. imum allowable diaphragm differential pressure of 150 psi 10 3 bar for gray cast iron steel and stainless steel constructions must not be exceeded Orifice Sizes NPS 1 2 DN 15 Main Valve 9 16 inch 14 mm NPS 3 4 and 1 DN 20 and 25 Main Valves 3 4 inch 19 mm is standard 9 16 inch 14 mm is optional Maximum Material Temperature Capabilities Gray Cast Iron Construction 406 F 208 C Steel and Stainless Steel Construction 500 F 260 C Optional High Temperature Steel or Stainless Steel Body 650 F 343 C Pressure Registration With Pilot External Without Pilot Internal Downstream Control Line Connection 1 4 NPT internal in pilot body downstream control line not required for pressure loaded regulator Loading Pressure Connection 1 4 NPT internal in main valve diaphragm flange this connection is factory piped to the pilot on pilot operated regulator Pilot Spring Case Vent 3 32 inch 2 4 mm drilled hole Approximate Weights Gray Cast Iron Steel or Stainless Steel Body with Pilot 20 pounds 9 1 kg Gray Cast Iron Steel or Stainless Steel Body without Pilot 16 pounds 7 3 kg 1 Pressure temperature limits in this Instruction Manual and any applicable code limitations must not be exceeded Note To determine required loading pressure add the diaphragm differential pressure to the desired outlet pressure setting PRESSURE DROP ACROSS VALVE bar DIAPHRAGM DIFFERENTIAL
18. lot operated regulator unscrew the elbow and connector keys 25 and 24 Figure 10 so that the loading tubing key 22 Figure 10 can be removed For the pressure loaded regulator unscrew the loading tubing customer supplied from the 1 4 NPT connection in the regulator diaphragm flange key 2 2 Remove the cap screws key 12 and the diaphragm flange key 2 Lift out the upper diaphragm gasket key 9 the diaphragms key 8 the lower diaphragm gasket and for Steel Stainless Steel constructions the diaphragm ring key 15 and another diaphragm gasket key 9 3 Lift out the stem assembly key 11 consisting of the pusher plate and the stem Check that the pitot tube key 10 is clear and free of obstructions Clean the parts Check for wear scratches nicks and other damage and replace parts as necessary 4 Install the stem assembly key 11 in the stem guide bushing key 6 Place one diaphragm gasket key 9 in the regulator body key 1 For Steel Stainless Steel constructions place the diaphragm ring key 15 and another diaphragm gasket key 9 on top of the first gasket For all constructions place the two molded diaphragms key 8 with the raised circle up another diaphragm gasket and the diaphragm flange key 2 on the body Insert and tighten the cap screws key 12 5 For the pilot operated regulator reconnect the elbow the loading tubing and the connector keys 25 22 and 24 Figure 10 Fo
19. n using 12 to 18 foot pounds 16 to 24 Nem of torque Parts Ordering When corresponding with your local Sales Office about this equipment always specify the equipment serial number as found on the regulator nameplate When ordering replacement parts specify the complete 11 character part number of each needed part as found in the following parts list Parts List Regulator Key Description Part Number 1 Regulator Body Assembly with Bushing See key 6 for bushing Gray Cast Iron NPS 1 2 DN 15 36A1539X012 NPS 3 4 DN 20 36A1540X012 NPS 1 DN 25 36A1541X012 Steel 1 2 NPT 36A1542X012 3 4 NPT 36A1543X012 1 NPT 36A1544X012 14 Key 8 9 10 Description Part Number Regulator Body Assembly with Bushing continued Steel continued CL150 RF NPS 1 2 DN 15 14B3428X012 NPS 3 4 DN 20 14B3428X022 NPS 1 DN 25 19A5459X012 CL300 RF NPS 1 2 DN 15 14B3428X032 NPS 3 4 DN 20 14B3428X042 NPS 1 DN 25 14B0037X012 PN 16 25 40 RF NPS 1 2 DN 15 14B3428X052 NPS 3 4 DN 20 14B3428X062 NPS 1 DN 25 14B3428X072 Stainless Steel 1 2 NPT 36A1542X022 3 4 NPT 36A1543X032 1 NPT 36A1544X022 CL150 RF NPS 1 2 DN 15 14B3428X082 NPS 3 4 DN 20 14B3428X092 NPS 1 DN 25 19A5459X022 CL300 RF NPS 1 2 DN 15 14B3428X102 NPS 3 4 DN 20 14B3428X112 NPS 1 DN 25 14B0037X022 PN 16 25 40 RF NPS 1 2 DN 15 14B3428X122 NPS 3 4 DN 20 14B3428X132 NPS 1 DN 25 14B3428X142 Diaphragm Flange Gray Cast Iron 26A1533X012 Steel 26A
20. ody 316 Stainless Steel 8 Bellows Retainer Steel body Brass Stainless Steel body 316 Stainless Steel 9 Bellows Steel body Brass Stainless Steel body 321 Stainless Steel 10 Diaphragm 302 Stainless Steel 2 required 11 Lower Spring seat Type 6492HM Aluminum Type 6492HTM Steel Stainless Steel 12 Spring Type 6492HM Steel 10 to 30 psig 0 69 to 2 2 bar 25 to 75 psig 1 7 to 5 2 bar 70 to 150 psig 4 8 to 10 3 bar Type 6492HTM Stainless Steel 15 to 100 psig 1 0 to 6 9 bar 80 to 250 psig 5 5 to 17 2 bar 13 Upper Spring seat Steel Type 6492HM Type 6492HTM 14 Spring Case Steel With standard adjusting screw With sealed adjusting screw Stainless Steel With standard adjusting screw With sealed adjusting screw 15 Adjusting Screw Steel Standard Handwheel 16 Hex Nut Zinc plated steel Part Number 22 0403 052 22 0403 072 1E391835132 1E391835072 1E392437022 1F967446172 1F9674X0012 1H564446172 1H5644X0012 1F967835132 1F9678X0012 1F971214012 1F9712X0012 1F971318992 1F9713X0012 1E395836012 1E395408012 1E3954X0052 14B9948X012 1E395627022 1D7455T0012 1E395727192 14B9943X012 14B9942X012 1D667125072 14B9951X012 2L416322012 2L442022012 2L416333092 2L4420X0012 1D995448702 1J496428982 14353724122 15 Type 92C Types 6492HM and 6492HTM Safety Override Pilots See Figure 12 continued Key Description 17 Screw 8 required Type 6492HM Steel Stainle
21. oper size strainer upstream of the regulator Pilot Operated Regulator The Type 6392 pilot has three 1 4 NPT connections located in the pilot body For proper operation of a pilot operated regulator the pilot supply and the regulator loading connections should be installed parallel to the flow direction arrow marked on the pilot body as shown in Figure 10 and the downstream control line should be installed in the pilot body connection as shown in Figures 3 and 10 If a pilot operated regulator is ordered the pilot supply and the regulator loading connections will be made at the factory Note Pilot is shown here above the main valve body for illustration purposes only See Figures 1 and 10 for actual pilot position and appearance of pilot supply line and loading pressure tubing Type 92C PILOT REGULATING SPRING PILOT DIAPHRAGM DOWNSTREAM BLEED HOLE DOWNSTREAM PILOT m CONTROL LINE PILOT MAIN VALVE VALVE DIAPHRAGM PLUG PILOT VALVE SPRING MAIN VALVE PLUG MAIN VALVE SPRING 36A1546 B 2520 1 EHE INLET PRESSURE OUTLET PRESSURE CO ATMOSPHERIC PRESSURE LOADING PRESSURE Figure 5 Operational Schematic of Pilot Operated Type 92C Regulator TYPE 6492HM SAFETY OVERRIDE PILOT TYPE 6392 PILOT TYPE 6392 PILOT TYPE 92C MAIN VALVE TYPE 92C MAIN VALVE E0658 ERES INLET PRESSURE EX OUTLET PRESSURE CO ATMOSPHERIC PRESSURE LOADING PRESSURE INTERME
22. ply is required The pressure loaded version is used where remote adjustment of the regulator pressure setting is required a 67 or www fisherregulators com w3111_2 Figure 1 Type 92C Pilot Operated Regulator 1301 Series regulator or 670 Series panel mounted regulator may be used as the loading regulator A Type 6492HM or 6492HTM safety override pilot is also available for the Type 92C The Type 6392 pilot is used in a series installation with the Type 6492HM or 6492HTM safety override pilot installed on the upstream valve 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 upstream pressure does not exceed 400 psig 27 6 bar Local codes and standards may require approval by an appropriate authority prior to installation The Type 92C safety override system does not provide positive shutoff in dead end service It is intended for large distribution systems where steam leakage will condense before steam pressure builds up Downstream piping and components must be rated for maximum upstream steam pressure for dead end service Failure to do so could cause personal injury or death aa EMERSON D100255X012 Type 92C Specific
23. psi PRESSURE DROP ACROSS VALVE psi 26A3808 A A2508 1 3 4 inch 19 mm orifice size Figure 2 Diaphragm Differential Pressure for Pressure Loaded Regulator DIAPHRAGM DIFFERENTIAL bar Type 92C TYPE 92C REGULATOR p PILOT LOADING LINE PILOT SUPPLY M DOWNSTREAM TYPE 6392 poit CONTROL LINE TOP VIEW OF REGULATOR AND PILOT CONNECTIONS TYPE 6302 PILOT DOWNSTREAM CONTROL LINE TYPE 92C REGULATOR 16A1548 B A2522 1 BYPASS LINE Figure 3 Typical Pilot Operated Type 92C Regulator Installation Table 1 Safety Pilot Outlet Control Pressure Ranges SPRING RANGE MINIMUM PRESSURE AT WHICH MONITORING TYPE SPRING COLOR PILOT CAN BE SET 10 to 30 0 69 to 2 1 Yellow 5 psig 0 34 bar over normal distribution pressure 6492HM 25to 75 1 7 t0 5 2 Green 70 to 150 4 8 to 10 3 Red 10 psig 0 69 bar over normal distribution pressure 80 to 250 5 4 to 17 2 6492HTM Unpainted 15 to 100 1 0 to 6 9 Table 2 Outlet Pressure Ranges OUTLET PRESSURE RANGE SPRING PART NUMBER SPRING WIRE DIAMETER SPRING FREE LENGTH SPRING USAGE psig bar AND COLOR Inches mm Inches mm Standard use up to 5 to 70 0 34 to 4 8 1E392627012 Green 0 170 4 32 2 00 50 8 500 F 260 C 20 to 150 14 to 10 3 1E392727142 Red 0 207 5 26 1 94 49 0 High pressure and or High 15 to 100 1 0 to
24. r Technologies Inc product remains solely with the purchaser Emerson Process Management Regulator Technologies Inc 1979 2012 All Rights Reserved EMERSON
25. r the pressure loaded regulator reconnect the pressure loading tubing 6 When maintenance is completed refer to the Startup section to put the regulator back in operation and to adjust the pressure setting Replacing Valve Plug and Orifice 1 Remove the valve plug guide key 5 2 Remove the valve plug key 4 and the valve plug spring key 7 Inspect the valve plug seating surface for nicks or scratches Replace as necessary 3 Unscrew the orifice key 3 and inspect the seating surface for nicks and scratches Replace if necessary 4 Clean the valve plug guide the valve plug the valve plug spring and the orifice keys 5 4 7 and 3 respectively 5 Coat the orifice threads with Never Seez or equivalent lubricant Then being careful not to damage the seating surface thread the orifice key 3 into the regulator body key 1 6 Place the valve plug spring key 7 into the valve plug guide key 5 Then slide the valve plug key 4 over the spring and into the valve plug guide 7 Apply Lok Cease 20 20 sealant or equivalent to the valve plug guide threads and screw the valve plug guide key 5 with attached parts into the regulator body key 1 applying 130 to 160 foot pounds 176 to 217 Nem of torque Trademark of Never Seez Corp t Trademark of Certified Laboratories Type 92C AN UNS Na NG S HAS IN B 9 a 6 A
26. ss Steel Type 6492HTM Steel Stainless Steel 18 Diaphragm Gasket Type 6492HM Composition Type 6492HTM Graphite 34 Machine Screw for use with handwheel Steel 38 Handwheel Zinc 39 Lock Washer for use with handwheel Steel 74 Pipe Plug Steel Stainless Steel 77 Screen 304 Stainless Steel 78 Reducing Bushing Steel Stainless Steel 87 Sealed Adjusting Screw Sealing Washer 94 Pipe Plug Stainless Steel 95 Warning Label 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 071 4811 8100 For further information visit www fisherregulators com Type 6492HM Pilot Mounting Parts Key Description 81 Tubing 82 Pipe Nipple 2 required Part Number Steel Stainless Steel 83 Connector 14381624052 Steel 1 816 0152 Stainless Steel 84 Elbow 1A3816X0132 Steel 1A3816X0152 Stainless Steel 1E396104022 1E3961X0012 16A5763X012 1J496144012 1A352332992 02020128992 027020135072 16A1512X012 1C379026232 1C3790X0012 1V205699012 1E823135042 19B0429X0A2 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 9
27. tem assembly the gasket the diaphragm and the spring seat in the order shown in Figure 9 3 Install the control spring key 13 the lubricated upper spring seat key 14 and the spring case key 2 Insert and tighten the cap screws key 17 Lubricate the adjusting screw key 16 with Never Seez or equivalent lubricant and thread it into the spring case 4 Unscrew the valve plug guide key 5 Remove the strainer screen key 12 the valve plug Key 4 the valve plug cap key 26 and the valve plug spring key 11 Unscrew the orifice key 3 Clean and replace parts as necessary Apply Never Seez or equivalent lubricant to the orifice threads and screw the orifice into place 5 Place the valve plug spring key 11 into the valve plug guide key 5 Insert the valve plug cap key 26 into the valve plug key 4 and then slide both parts over the spring and into the valve plug guide Place the strainer screen key 12 onto the valve plug guide Apply Lok Cease 20 20 sealant Trademark of Never Seez Corp T Trademark of Certified Laboratories or equivalent key 21 to the valve plug guide threads and screw the valve plug guide with the attached parts into the pilot body key 1 6 When maintenance is completed refer to the Startup section to put the regulator back into operation and adjust the pressure setting Types 6492HM and 6492HTM Safety Override Pilots These procedures are to be performed if inspecting
28. the threads of the pipe plug key 94 and install Type 92C RE ae D X LY AU 49 LA d ZS MW ah we 4 7 Figure 11 6492HM or 6492HTM Safety Override Pilot Assembly TYPE 6492HM TYPE 6392 E0659 Figure 12 Type 92C with Safety Override Pilot Assembly Type 92C 10 11 Apply sealant to the threads of the pipe plug key 74 Thread the pipe plug into place and tighten using 5 to 15 foot pounds 6 8 to 20 N m of torque Remove the cap screws key 17 spring case key 14 control spring key 12 and upper spring seat key 13 from the body key 1 Remove the lower spring seat key 11 diaphragms key 10 and diaphragm gasket key 18 from the body Inspect and clean the diaphragm gasket and replace if necessary Unscrew the bellows retainer key 8 and remove the bellows key 9 Replace worn parts as necessary and install the bellows and bellows retainer Tighten the bellows retainer using 19 to 25 foot pounds 26 to 34 Nem of torque Install the diaphragm gasket Install both diaphragms with their raised performed centers facing toward the spring case Lubricate the upper spring seat and the exposed threads of the adjusting screw Install the lower spring seat key 11 control spring key 12 upper spring seat key 13 and spring case key 14 Insert and tighten the cap screws key 17 in a crisscross bolting patter
29. the way in to its highest spring setting 5 Tighten the Type 6392 pilot of the downstream valve to the desired downstream pressure 6 Loosen the Type 6392 intermediate pilot on the upstream valve to the desired intermediate pressure normally 5096 of inlet pressure 7 Loosen the Type 6492HM or 6492HTM safety override pilot of the upstream valve until there is no spring load 8 Tighten the Type 6392 pilot of the downstream valve all the way in to its highest spring setting 9 Tighten the Type 6492HM or 6492HTM safety override pilot of the upstream valve to desired pressure as specified per ASME Boiler and Pressure Vessel Code section VIII 10 Loosen the Type 6392 pilot of the downstream valve to the desired downstream pressure setpoint Fisher recommends establishing setpoint by tightening the adjusting screw IET IET KRM A NOE _ SOD TT pua bs LAE gt gt gt GRAY CAST IRON CONSTRUCTION 26A1536 A APPLY SEALANT S ANTI SEIZE COMPOUND Figure 8 Type 92C Steam Regulator Assembly Shutdown To take the regulator out of operation 1 If a bypass line is used slowly open the bypass line block valve while monitoring the downstream pressure 2 Close the upstream block valve 3 For a pilot operated regulator close the downstream block valve For a pressure loaded regulator close the shutoff valve in th
30. tions section on page 2 and on the appropriate nameplate or where conditions exceed any ratings of the downstream piping or piping connections To avoid such injury or damage provide pressure relieving or pressure limiting devices to prevent service conditions from exceeding those limits Type 92C regulators and their installations should be checked for compliance with all applicable codes such as the ANSI B31 1 1977 Power Piping standard and the ASME Boiler and Pressure Vessel code Use a qualified personnel when installing operating and maintaining a Type 92C regulator Make sure that there is no damage to or foreign material in the regulator and that all tubing and piping are clean and unobstructed Install the regulator so that flow direction matches the arrow marked on the regulator body Some typical Type 92C regulator installations are shown in Figures 3 and 4 The Type 92C regulator may be installed in any orientation However the regulator should not be installed in a tall vertical pipeline where condensate could collect and create a pressure head affecting regulator performance Apply steam compatible pipe compound to the external pipeline threads Then using acceptable piping procedures install the regulator into the pipeline If continuous operation of the system is required during inspection and maintenance install a three valve bypass around the regulator If the flowing medium contains solids install a pr
Download Pdf Manuals
Related Search