Emerson T208 Instruction Manual
Contents
1. 86 21 2892 9000 Europe Bologna 40013 Italy Tel 39 051 419 0611 Middle East and Africa Dubai United Arab Emirates Tel 011 971 4811 8100 Natural Gas Technologies Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75070 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Singapore 128461 Singapore Tel 65 6770 8337 Europe Bologna 40013 Italy Tel 39 051 419 0611 Chartres 28008 France Tel 33 2 37 33 47 00 Middle East and Africa Dubai United Arab Emirates Tel 011 971 4811 8100 For further information visit www fisherregulators com TESCOM Emerson Process Management Tescom Corporation USA Headquarters Elk River Minnesota 55330 2445 USA Tels 1 763 241 3238 1 800 447 1250 Europe Selmsdorf 23923 Germany Tel 49 38823 31 287 Asia Pacific Shanghai 201206 China Tel 86 21 2892 9499 The distinctive diamond shape cast into every spring case uniquely identifies the regulator as part of the Fisher brand and assures you of the highest quality engineering durability performance and support 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 effort2. 53 1 Nem ERSA02738 APPLY LUBRICANT L L1 SILICONE GREASE L2 ANTI SEIZE COMPOUND Lubricants must be selected such that they meet the temperature requirements NS Sd EN SN EB TORQUE 60 TO 72 INCH POUNDS 6 8 TO 8 1 Nem Figure 5 Type T208M Section Drawing External Registration To Convert Constructions From Type T208 to Type T208M A control line is needed New parts required keys 30 31 and 34 Key numbers are referenced in Figures 4 5 and 6 1 Remove pipe plug key 27 from the diaphragm casing key 4 Use this port to connect the control line from upstream See item number 5 in the Installation section 2 Refer to steps 1 through 3 in the Body Area Maintenance section 3 Insert the throat seal O ring key 31 and machine screw key 34 4 Insert the stem seal O ring key 30 by following steps 1 through 6 and 8 through 11 in the To Disassemble and Reassemble Diaphragm Part under Diaphragm and Spring Case Area Maintenance section 5 Reassemble following steps 7 through 10 of the Body Area Maintenance section From Type T208M to Type T208 New part required key 27 Key numbers are referenced in Figures 4 5 and 6 1 Insert pipe plug key 27 in the diaphragm casing key 4 2 Follow steps 1 through 6 and 8 through 11 in the To Disassemble and Reassemble Diaphragm Part under Diaphragm and Spring Case Area Maintenance section to remove th
3. Inch DN 25 Body Gray Cast Iron NPT ERSA03695A0 ERSA03697A0 NPT ERSA00231A1 ERSA00764A1 CL150 RF ERSA01470A0 ERSA01470A1 WCC Carbon Steel CL300 RF ERSA01470A2 ERSA01470A3 PN 16 25 40 RF ERSA01470A4 ERSA01470A5 NPT ERSA00231A0 ERSA00764A0 CL150 RF ERSA01470A6 ERSA01470A7 CF8M CF3M Stainless Steel CL300 RF ERSA01470A8 ERSA01470A9 PN 16 25 40 RF ERSA01470B0 ERSA01470B1 2 NACE Standard MRO0175 2002 1 All flanges are welded Weld on flange dimension is 14 inches 356 mm face to face 3 Pipe nipples and flanges are 316 Stainless steel for flanged body assemblies Table 4 Type T208 Trim Option Code TRIM OPTION CODE DIAPHRAGM MATERIAL DISK AND O RING MATERIAL OPERATING TEMPERATURE RANGES Standard Nitrile NBR Nitrile NBR 40 to 180 F 40 to 82 C VV Fluorocarbon FKM Fluorocarbon FKM 40 to 300 F 4 to 149 C TN Fluorinated Ethylene Propylene FEP Nitrile NBR 20 to 180 F 29 to 82 C TV Fluorinated Ethylene Propylene FEP Fluorocarbon FKM 40 to 180 F 4 to 82 C TK Fluorinated Ethylene Propylene FEP Perfluoroelastomer FFKM 0 to 180 F 18 to 82 C TE Fluorinated Ethylene Propylene FEP Ethylene Propylene Diene EPDM 20 to 180 F 29 to 82 C Industrial Regulators Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75070 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Shanghai 201206 China Tel
4. Inconel NACE Back Body Seal O ring Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylene Propylene Diene EPDM Back Body Cap Stainless Steel Disk Spacer Stainless Steel Diaphragm Head Gasket Composition Nameplate Drive screw Stainless Steel 2 required Flow arrow Backup Ring Stainless Steel Lower Spring Seat Zinc plated Steel NACE Tag Tag Wire Part Number ERSA00200A0 1B5375000B2 19A7151X022 27B4028X022 1J618124092 14413224122 T11069X0012 1E422724092 1E422735072 ERSA01809A0 1A345724122 1A3457K0012 1A579724052 1A5797T0012 1P753306992 17A6570X012 17A5515X012 14369224492 1A369235072 1H2926G0012 1H2926X0022 1H2926X0042 1H2926X0012 1D682506992 1D6825X0012 1D6825X0032 1D6825X0042 18A0703X022 1B537944012 10B3080X012 1D995448702 18B3440X012 1B290524052 1E984637022 18B0255X012 13A1584X012 13A1584X022 13A1584X032 13A1584X042 1F2737X0012 ERSA00198A0 18B3450X012 18B3446X012 1B636325062 1 Use for optional external square head adjusting screw assembly recommended for 0 9 to 2 5 psig 62 to 172 mbar 1 3 to 4 5 psig 90 to 310 mbar and 3 8 to 7 psig 0 26 to 0 48 bar spring ranges only 2 NACE Standard MR0175 2002 Inconel is a mark owned by Special Metals Corporation 11 T208 Series Table 3 Body Materials and Part Numbers Body key 1 PART NUMBER BODY MATERIAL END CONNECTION STYLE 3 4 Inch DN 20 Body 1
5. bursting of pressure containing parts may result if this regulator is overpressured or installed where service conditions could exceed the limits given in the Specifications section page 2 or where conditions exceed any ratings of the adjacent piping or piping connections To avoid such injury or damage provide pressure relieving or pressure limiting devices as required by the appropriate code regulation or standard to prevent service conditions from exceeding limits Additionally physical damage to the regulator could cause personal injury or property damage due to escaping gas To avoid such injury or damage install the regulator in a safe location 1 Only personnel qualified through training and experience shall install operate and maintain a regulator For a regulator that is shipped separately make sure there is no damage to or debris in the regulator Also ensure that all tubing and piping are clean and unobstructed 2 Install the regulator using a straight run of pipe the same size or larger as the regulator body Flow through the regulator body is indicated by the flow arrow attached to the body If a block valve is required install a full flow valve between the regulator and the blanketed vessel For proper operation the regulators should be installed with the spring case barrel pointed down Key numbers referenced in this section are shown in Figures 4 5 and 6 A regulator may vent some gas to the atm
6. 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 Regulator Technologies Inc product remains solely with the purchaser Emerson Process Management Regulator Technologies Inc 2013 2014 All Rights Reserved CS wa mL EMERSON
7. key 43 10 Lightly lubricate the threads when replacing the body cap assembly Use 340 to 470 inch pounds 38 5 to 53 1 Nem of torque Diaphragm and Spring Case Area Perform the following procedure to gain access to the spring diaphragm lever assembly and stem Release all pressure from the diaphragm casing before performing the following steps Key numbers are referenced in Figures 4 5 and 6 To Change the Control Spring For internal flat circular adjusting screw 1 Remove the closing cap key 22 and closing cap gasket key 25 Turn the adjusting screw key 35 counterclockwise to remove all the compression from the control spring key 6 2 Remove the adjusting screw key 35 and change the control spring key 6 to match the desired spring range 3 Install the adjusting screw key 35 4 Adjust the outlet pressure to the desired control pressure setting refer to steps 2 and 3 of Adjustment section 5 Change the stamped spring range on the spring case nameplate For external square head adjusting screw 1 Loosen the locknut key 20 and turn the adjusting Screw key 35 counterclockwise to remove all the compression from the control spring key 6 2 Remove the adjusting screw key 35 locknut key 20 closing cap key 22 closing cap gasket key 25 and upper spring seat key 19 3 Take out the control spring key 6 and replace with the desired spring 4 Reinstall the upper spring seat k
8. 08M open the control line shutoff valve first followed by the inlet shutoff valve between the tank and vapor recovery regulator 3 Use gauges to monitor pressure Adjustment To avoid personal injury property damage or equipment damage caused by bursting of pressure containing parts or explosion of accumulated gas never adjust the control spring to maintain a control pressure higher than the upper limit of the control pressure range for that particular spring If the desired control pressure is not within the range of the spring install a spring of the proper range according to the Diaphragm and Spring Case Area section of the maintenance procedure Adjust the regulator control pressure setting to meet the requirements of the specific application The range of allowable pressure setting is stamped on the nameplate If a pressure setting beyond the stamped range is required install a spring with the desired range by following the procedures for changing the spring in the Maintenance section To adjust the pressure setting perform the following steps Key numbers are referenced in Figures 4 5 and 6 For internal flat circular adjusting screw 1 Remove the closing cap key 22 2 Use a 1 inch 25 mm hex rod or flat screwdriver to turn the adjusting screw key 35 either clockwise to increase control pressure or counterclockwise to decrease control pressure The regulator will go into immediate operation To ensure corr
9. 2 Remove the disk assembly key 13 from the disk spacer key 44 and replace if necessary 3 To inspect the orifice key 5 on Types T208 and T208M or throat seal O ring key 31 and machine screw key 34 on the Type T208M remove the cap screws key 2 and separate the diaphragm casing key 4 from the body key 1 4 Remove and inspect the body seal O ring key 11 and the backup ring key 49 Replace if damaged 5 Fora Type T208M inspect the throat seal O ring key 31 by removing the machine screw key 34 Replace if necessary To install a throat seal place the throat seal O ring on the machine screw and thread into guide insert key 18 to seal 6 Inspect and replace the orifice key 5 if necessary Lightly lubricate the threads of the replacement orifice with a good quality lubricant and install with 340 to 470 inch pounds 38 5 to 53 1 Nem of torque 7 Place back up ring key 49 into the body key 1 Then place the body seal O ring key 11 into the body Note In the following steps be sure to install the spring case barrel pointed down as shown in Figure 1 8 Place the diaphragm casing key 4 on the body key 1 Secure the diaphragm casing to the body with the cap screws key 2 using 90 to 126 inch pounds 10 2 to 14 2 Nem of torque 9 Secure the disk assembly key 13 to the disk spacer key 44 Place the back disk spring key 41 and a new back body seal O ring key 42 on the back body cap
10. A00193A0 1H993806992 1H9938X0012 1H9938X0042 1H9938X0022 1B885506992 1B8855X0012 1B8855X0062 1B8855X0022 ERSA01112A0 ERSA01112A1 ERSA01112A2 ERSA01112A3 Key 14 17 18 19 22 23 24 25 26 27 30 31 34 35 T208 Series Description Stem Stainless Steel Lever Assembly Stainless Steel Machine Screw 2 required Stainless Steel Guide Insert Stainless Steel Upper spring seat Steel Lock Nut Closing Cap Plastic standard Steel Stainless Steel Carbon Steel Hex Nut 8 required For Gray Cast Iron or WCC Carbon Steel Casing For CF8M CF3M Stainless Steel Casing Cap Screw 8 required For Gray Cast Iron or WCC Carbon Steel Casing For CF8M CF3M Stainless Steel Casing Closing Cap Gasket Neoprene CR Vent Assembly Spring Case Down Type Y602 1 standard Spring Case Up Type Y602 11 Pipe Plug Type T208 only not shown Carbon Steel standard Stainless Steel NACE Stem Seal O ring Type T208M only Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylene Propylene Diene EPDM Throat Seal O ring Type T208M only Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylene Propylene Diene EPDM Machine Screw Type T208M only Stainless Steel Adjusting Screw Internal Flat Circular standard External Square Head For Green and Light blue spring For Black spring Washer Plated Carbon Steel Cap Screw Zinc plated Steel Back Disk Spring Stainless Steel
11. Instruction Manual April 2014 T208 Series T208 Series Tank Blanketing Vapor Recovery Regulators Table of Contents troduction eee ee red ene Specifications ccccccecceceeeeeeeeeeeeeeeeeees Principle of Operation Installation ssssess Startup Adjustment and Shutdown Maintenance sssssssseeeee Parts Ordering esse Parts BE PE Figure 1 Type T208 Tank Blanketing Vapor Recover Regulator Failure to follow these instructions or maintenance procedures performed to properly install and maintain this by unqualified person may result equipment could result in an explosion in improper adjustment and unsafe fire and or chemical contamination operation Either condition may result in causing property damage and personal equipment damage or personal injury injury or death Fisher Vapor Recovery regulators be installed operated and maintained Only a qualified person shall install or service the T208 Series vapor must recovery regulator in accordance with federal state and local codes rules and regulations Introduction and Emerson Process Management Regulator Technologies Inc Regul Technologies instructions If the regulator discharges process un Scope of the Manual This Instruction Manual provides instructions for fluid or a leak develops in the system installati
12. TE Trim 1 Body Cap Screw 2 required For Gray Cast Iron or WCC Carbon Steel Casing For CF8M CF3M Stainless Steel Casing 3 Spring Case Gray Cast Iron WCC Carbon Steel NACE CF8M CF3M Stainless Steel NACE 4 Lower Casing Gray Cast Iron WCC Carbon Steel CF8M CF3M Stainless Steel NACE 5 Orifice 7 16 inch 11 mm Stainless Steel 6 Spring 7 Diaphragm Head 2 required Stainless Steel 8 Pusher Post For Nitrile NBR or Fluorocarbon FKM Diaphragm Stainless Steel NACE For Fluorinated Ethylene Propylene FEP Diaphragm Stainless Steel NACE 9 Diaphragm Gasket Nitrile NBR For Fluorinated Ethylene Propylene FEP Diaphragm 10 Diaphragm Nitrile NBR Fluorocarbon FKM Fluorinated Ethylene Propylene FEP 11 Body Seal O ring Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylene Propylene Diene EPDM 12 Insert Seal O ring Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylene Propylene Diene EPDM 13 Disk Assembly Stainless Steel with Nitrile NBR Fluorocarbon FKM Perfluoroelastomer FFKM Ethylene Propylene Diene EPDM Recommended Spare Part Part Number RT208XXDD12 RT208XXVV12 RT208XXTN12 RT208XXTV12 RT208XXTK12 RT208XXTE12 See Table 3 1C856228992 18B3456X012 ERSA02558A0 ERSA00195A1 ERSA00195A0 47B2271X012 ERSA00196A1 ERSA00196A0 0L0832X0012 See Table 2 17B9723X032 18B3462X012 ERSA00876A0 ERSA00713A0 17B9726X012 23B0101X052 ERS
13. able 1 Body Sizes End Connection Styles and Maximum Allowable Inlet Casing Pressures BODY SIZE BODY MATERIAL Inch DN Gray cast iron END CONNECTION MAXIMUM ALLOWABLE INLET CASING PRESSURE psig bar 3 4 or 1 WCC Carbon steel CF8M CF3M Stainless steel NPT CL150 RF CL300 RF or PN 16 25 40 RF 75 5 2 2 Pipe nipples and flanges are 316 Stainless steel for flanged body assemblies 1 All flanges are welded Weld on flange dimension is 14 inches 356 mm face to face Table 2 Control Pressure Ranges and Spring Information CONTROL PRESSURE RANGE SPRING WIRE DIAMETER SPRING FREE LENGTH TENOR ER SPRING PART NUMBER SPRING COLOR inch m ind n 2 to 70 5 to 170 1B653827052 Red 0 085 2 2 3 63 92 2 3 to 130 7 to 320 1B653927022 Unpainted 0 105 2 7 3 75 95 3 10 to 26 25 to 65 1B537027052 Yellow 0 114 2 9 4 31 109 0 9 to 2 5 psig 62 to 172 1B537127022 Green 0 156 4 0 4 06 103 1 3 to 4 5 psig 90 to 310 1B537227022 Light blue 0 187 4 8 3 94 100 3 8 to 7 psig 0 26 to 0 48 bar 1B537327052 Black 0 218 5 5 3 98 101 1 To achieve the published control pressure range the spring case must be installed pointing down 2 Do not use Fluorocarbon FKM diaphragm with this spring at diaphragm temperatures lower than 60 F 16 C Installation Personal injury property damage equipment damage or leakage due to escaping gas or
14. e stem O ring key 30 3 Follow steps 1 through 5 of Body Area Maintenance to remove the throat seal O ring key 31 and machine screw key 34 4 Reassemble following steps 7 through 10 of Body Area Maintenance section T208 Series TORQUE 90 TO 126 INCH POUNDS 10 2 TO 14 2 Nem TORQUE 340 TO 470 INCH POUNDS 38 5 TO 53 1 Nem TORQUE 90 to 126 INCH POUNDS 10 2 to 14 2 Nem eoo p amp oO 17A6570 B SPRING CASE DOWNWARD STANDARD TYPE Y602 1 VENT 17A5515 D EXTERNAL SQUARE HEAD ADJUSTING SCREW ASSEMBLY OPTION SPRING CASE UPWARD TYPE Y602 11 VENT ERSA02737 APPLY LUBRICANT L L2 ANTI SEIZE COMPOUND Lubricant must be selected such that they meet the temperature requirements For 0 9 to 2 5 psig 62 to 172 mbar 1 3 to 4 5 psig 90 to 310 mbar and 3 8 to 7 psig 0 26 to 0 48 bar spring ranges only Na Figure 6 Type T208 Assembly Drawing 10 Parts Ordering When corresponding with your local Sales Office about this regulator include the type number and all other pertinent information stamped on the nameplate Specify the 11 character part number when ordering new parts from the following parts list Parts List Key Description Spare Parts Kit included are keys 9 10 11 12 25 42 and 45 see Table 4 for Trim Option Codes Standard Trim VV Trim TN Trim TV Trim TK Trim
15. ect operation always use a pressure gauge to monitor the vapor recovery pressure when making adjustments 3 After making the adjustment replace the closing cap gasket key 25 and install the closing cap key 22 T208 Series For external square head adjusting screw 1 Loosen the locknut key 20 2 Turn the adjusting screw key 35 either clockwise to increase outlet pressure or counterclockwise to decrease outlet pressure The regulator will go into immediate operation To ensure correct operation always use a pressure gauge to monitor the vapor recovery pressure when making adjustments 3 After making the adjustment tighten the locknut key 20 Shutdown 1 Close the nearest upstream shutoff valve 2 Close the nearest downstream shutoff valve to vent the regulator properly 3 Open the vent valve on both the upstream and downstream sides of the regulator All pressure between these shutoff valves is released through the open vent valve For a regulator with control line close the valve in the control line and vent the diaphragm casing to the atmosphere Maintenance Regulator parts are subject to normal wear and must be inspected and replaced as necessary The frequency of inspection and replacement of parts depends upon the severity of service conditions or the requirements of local state and federal regulations Due to the care Regulator Technologies takes in meeting all manufacturing requirements heat t
16. ey 19 closing cap gasket key 25 closing cap key 22 locknut key 20 and adjusting screw key 35 5 Adjust the outlet pressure to the desired control pressure setting refer to steps 2 and 3 of Adjustment section T208 Series 6 Change the stamped spring range on the nameplate To Disassemble and Reassemble Diaphragm Parts Use this procedure to gain access to the control spring diaphragm assembly valve stem and stem O ring All pressure must be released from the diaphragm case assembly before performing these steps Key numbers are referenced in Figures 4 5 and 6 1 For internal flat circular adjusting screw remove the closing cap key 22 closing cap gasket key 25 and adjusting screw key 35 For external square head adjusting screw remove the adjusting screw key 35 locknut key 20 closing cap key 22 closing cap gasket key 25 and upper spring seat key 19 2 Remove the hex nuts key 23 and cap screws key 24 Lift off the spring case key 3 and remove the control spring key 6 3 Remove the diaphragm key 10 plus attached parts by tilting them so that the pusher post key 8 slips off the lever assembly key 16 To separate the diaphragm assembly from the attached parts unscrew the cap screw key 38 from the pusher post If the only maintenance is to replace the diaphragm components skip to step 7 4 To replace the lever assembly key 16 remove the machine screws key 17 T
17. nstall the control line sloping downward toward the tank to prevent condensation buildup and avoid 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 The control line pipe should be at least 1 2 inch 13 mm in diameter and increase 1 pipe size for every 10 feet 3 05 m of control line with setpoint less than 5 inches w c 12 mbar 6 Vapor recovery regulators are used to maintain a constant inlet blanket pressure with the outlet flowing to a system whose pressure is lower than that at the inlet The recovery regulators are not intended to be used as an ASME certified relief device for overpressure protection on a tank They are to be used as part of a gas blanketing system to control outflow of blanketing gas under normal conditions and collect tank vapors for the vapor disposal reclamation system Provide alternate methods of emergency overpressure protection Startup Adjustment and Shutdown Note The Specifications section and Table 1 provide the maximum pressure capabilities for each regulator construction Use pressure gauges to monitor inlet pressure and control pressure during startup T208 Series Startup 1 Slowly open the outlet block valve if used to vapor recovery system and leave it fully open 2 Slowly open the shutoff valve for Type T2
18. o replace the stem key 14 or stem seal O ring key 30 also perform Body Area Maintenance procedure steps 1 through 3 and pull the stem key 14 out of the guide insert key 18 5 Install the stem key 14 into the guide insert key 18 and perform Body Area Maintenance procedure steps 7 through 10 as necessary 6 Install the lever assembly key 16 into the stem key 14 and secure the lever assembly with the machine screws key 17 7 Reassemble the diaphragm parts as follows Pusher post key 8 Diaphragm head gasket key 45 Diaphragm head key 7 Diaphragm key 10 Diaphragm head Lower spring seat key 50 Washer key 36 Secure the parts with diaphragm plate cap screw key 38 using 60 to 72 inch pounds 6 8 to 8 1 Nem of torque T208 Series TORQUE 14 TO 19 INCH POUNDS 1 6 TO 2 1 Nem L1 42 44 49 L1 11 L1 12 7 16 8 45 7 10 o H 41 13 12 8 14 18 L2 35 8 6 36 50 7 9 TORQUE TORQUE 340 TO 470 INCH POUNDS 38 5 TO 53 1 Nem 60 TO 72 INCH POUNDS 6 8 TO 8 1 Nem ERSA02737 APPLY LUBRICANT L L1 SILICONE GREASE L2 ANTI SEIZE COMPOUND 1 Lubricants must be selected such that they meet the temperature requirements Figure 4 Type T208 Section Drawing Internal Registration 8 Install the pusher post key 8 and attached d Closing cap key 22 dia
19. on requiring no control line Type T208M The Type T208M has a blocked throat and a control line connection for external registration Principle of Operation The T208 Series vapor recovery regulators are used to maintain a constant inlet blanket pressure with the outlet flowing to a system whose pressure is lower than that at the inlet When vessel pressure increases above the setpoint of the regulator due to pumping in or thermal heating the force of the control spring is overcome by pressure acting on the diaphragm This moves the disk away from the orifice allowing gas to flow from the vessel to the vapor recovery system As vessel pressure is reduced the force of the back disk spring causes the disk to move toward the orifice decreasing the flow of gas out of the vessel As vessel pressure drops below the setpoint of the regulator the disk will seat against the orifice shutting off the gas flow T208 Series PIPE PLUG DISK DIAPHRAGM BACK DISK SPRING CONTROL SPRING TYPE Y602 1 VENT EG INLET PRESSURE EE OUTLET PRESSURE ATMOSPHERIC PRESSURE Figure 2 Type T208 with Internal Registration Operational Schematics STEM SEAL O RING CONTROL LINE CONNECTION DISK DIAPHRAGM BACK DISK SPRING THROAT SEAL CONTROL SPRING TYPE Y602 1 VENT INLET PRESSURE EX OUTLET PRESSURE ATMOSPHERIC PRESSURE Figure 3 Type T208M with External Registration Operational Schematics T208 Series T
20. on startup maintenance and parts ordering service to the unit may be required information for the T208 Series vapor recovery Failure to correct trouble could result in regulators Instructions and parts list for other a hazardous condition Call a qualified service person to service the unit Installation operation and equipment used with these regulators are found in separate manuals EMERSON D103752X012 T208 Series Specifications The Specifications section on this page provides the ratings and other specifications for the T208 Series Factory specification such as type maximum inlet pressure maximum temperature maximum outlet pressure spring range and orifice size are stamped on the nameplate fastened on the regulator at the factory Product Configurations Type T208 Tank Blanketing Vapor Recovery regulator with control pressure range of 2 inches w c to 7 psig 5 mbar to 0 48 bar in six different spring ranges and has internal pressure registration requiring no control line Type T208M Similar to Type T208 but has a blocked throat and a control line connection for external pressure registration Body Sizes and End Connection Styles See Table 1 Maximum Allowable Inlet Casing Pressure See Table 1 Maximum Outlet Pressure 35 psig 2 4 bar Maximum Emergency Inlet Pressure to Avoid Internal Parts Damage With Nitrile NBR or Fluorocarbon FKM diaphragm 35 psig 2 4 bar With Fluorinated E
21. osphere In hazardous or flammable gas service vented gas may accumulate and cause personal injury death or property damage due to fire or explosion Vent a regulator in hazardous gas service to a remote safe location away from air intakes or any hazardous area The vent line or stack opening must be protected against condensation or clogging To keep the vent assembly key 26 from being plugged or the spring case key 3 from collecting moisture corrosive chemicals or other foreign material point the vent down or otherwise protect it The diaphragm casing key 4 Figure 6 may be rotated in order to obtain desired positioning 4 To remotely vent the regulator remove the vent assembly key 26 and install obstruction free tubing or piping into the 1 4 NPT vent tapping Provide protection on a remote vent by installing a screened vent cap into the remote end of the vent pipe If continuous operation of the system is required during inspection or maintenance install a three way bypass valve around the regulator 5 The Type T208M requires a control line Be sure to install the control line before putting the regulator into operation Make the control line as short and straight as possible and do not install it in a location where flow may be turbulent Significant restrictions in the control line can prevent proper pressure registration When using a hand valve it should be a full flow valve such as a full port ball valve I
22. phragm parts onto the lever assembly key 16 e Locknut key 20 9 Install the spring case key 3 on the lower casing f Adjusting screw key 35 key 4 so that the vent assembly key 26 is 11 Turn the adjusting screw key 35 clockwise until correctly oriented and secure them with the cap there is enough control spring key 6 force to screws key 24 and hex nuts key 23 to finger provide proper slack to diaphragm key 10 Using tightness only a crisscross pattern finish tightening the cap screws key 24 and hex nuts key 23 to 90 to 10 Install the parts into the spring case key 3 126 inch pounds 10 2 to 14 2 N m of torque Adjust Follow the order below For internal flat circular adjusting screw a Control spring key 6 the control pressure to the desired pressure setting refer to the Adjustment section b Adjusting screw key 35 12 For Type T208M connect the control line Refer For external square head adjusting screw to the Startup section before putting the regulator a Control spring key 6 back in operation b Upper spring seat key 19 c Closing cap gasket key 25 T208 Series Li 42 44 49 u1 j Y VY a 1 i1 Go TORQUE 14 TO 19 INCH POUNDS 1 6 TO 2 1 Nem aM G9 9 OOW Er Sx ANE AA Ko ARD KPA LA Ds NBI ae 4 41 L2 5 34 ut TORQUE 340 TO 470 INCH POUNDS 38 5 TO
23. reating dimensional tolerances etc use only replacement parts manufactured or furnished by Regulator Technologies To avoid personal injury property damage or equipment damage caused by sudden release of pressure or explosion of accumulated gas do not attempt any maintenance or disassembly without first isolating the regulator from system pressure and relieving all internal pressure from the regulator Regulators that have been disassembled for repair must be tested for proper operation before being returned to service Only parts manufactured by Regulator Technologies should be used for repairing Fisher regulators Restart gas utilization equipment according to normal startup procedures General Maintenance 1 Visually inspect the regulator and its parts for any damage 2 Ensure tight connections tight seals and safe operation If there is an evidence of leakage or unstable internal motion a rebuild with seal replacement and relubrication may be necessary 3 Observe the blanketing pressure 4 Inspect the inlet pressure for the proper pressure stamped on the regulator nameplate Body Area Perform the following procedure to gain access to the disk assembly orifice and body seal O ring Release all pressure from the regulator before performing the following steps Key numbers are referenced in Figures 4 5 and 6 1 To inspect and replace the disk assembly key 13 remove the back body cap key 43
24. thylene Propylene FEP diaphragm 10 psig 0 69 bar Control Pressure Ranges See Table 2 Shutoff Classification per ANSI FCI 70 3 2004 Class VI Soft Seat Pressure Registration Type T208 Internal Type T208M External Material Temperature Capabilities Elastomer Parts Nitrile NBR 40 to 180 F 40 to 82 C Fluorinated Ethylene Propylene FEP 20 to 180 F 29 to 82 C Fluorocarbon FKM 40 to 300 F 4 to 149 C Ethylene Propylene Diene EPDM 20 to 225 F 29 to 107 C Perfluoroelastomer FFKM 0 to 300 F 18 to 149 C Body Materials Gray Cast Iron 20 to 300 F 29 to 149 C WCC Carbon Steel 20 to 300 F 29 to 149 C CF8M CF3M Stainless Steel 40 to 300 F 40 to 149 C Spring Case Vent Connection 1 4 NPT Diaphragm Case Control Line Connection Type T208M 1 2 NPT Approximate Weight 17 7 pounds 8 kg 1 The pressure temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded 2 See Table 4 for operating temperature ranges for available trim combinations Product Description The T208 Series vapor recovery regulators are direct operated They are used to sense an increase in vessel pressure and vent excessive internal vessel pressure to an appropriate vapor recovery disposal or reclamation system They may also be used as backpressure regulators or relief valves Type T208 The Type T208 has internal registrati
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