Emerson FISHER T208VR Series Instruction Manual Download Page 3

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T208VR Series

Figure 2.

Type T208VR Operational Schematic

TYPE T208Vr WiTH inTErnaL PrESSUrE rEgiSTraTiOn

TYPE T208VrM WiTH EXTErnaL PrESSUrE rEgiSTraTiOn

inLET PrESSUrE (COnTrOLLED VaCUUM)
OUTLET PrESSUrE (HigHEr VaCUUM SOUrCE)
aTMOSPHEriC PrESSUrE

VACUUM BEING

CONTROLLED

HIGHER VACUUM SOURCE

VACUUM

PUMP

aDJUSTing nUT

COnTrOL SPring

VEnT

PiPE PLUg

PUSHEr

POST

STEM

LEVEr

DiaPHragM

VaLVE PLUg DiSK

OriFiCE

aDJUSTing nUT

COnTrOL SPring

VEnT

PUSHEr

POST

STEM

STEM SEaL

THrOaT SEaL

LEVEr

DiaPHragM

COnTrOL LinE

COnnECTiOn POrT

VaLVE PLUg DiSK

OriFiCE

Summary of Contents for FISHER T208VR Series

Page 1: ...vice applications where a constant vacuum must be Figure 1 Type T208VR Vacuum Regulator Table of Contents Introduction 1 Specifications 2 Principle of Operation 2 Installation 4 Startup Adjustment and Shutdown 5 Maintenance 5 Parts Ordering 9 Parts List 9 maintained These direct operated vacuum regulators come in 3 4 and 1 inch DN 20 and 25 body sizes and have a 7 16 inch 11 mm orifice and a 1 4 i...

Page 2: ...tration Type T208VRM Direct operated vacuum regulator with blocked throat and control line connection for external pressure registration Body Sizes and End Connection Styles 1 BODY SIZE END CONNECTION STYLES Inch DN Gray cast iron 316L 316 Stainless steel 3 4 or 1 20 or 25 NPT NPT or CL150 RF Maximum Casing Pressure 1 35 psig 2 41 bar Maximum Casing Vacuum Pressure 1 Full Vacuum Maximum Allowable ...

Page 3: ... SOURCE ATMOSPHERIC PRESSURE INLET PRESSURE CONTROLLED VACUUM OUTLET PRESSURE HIGHER VACUUM SOURCE ATMOSPHERIC PRESSURE VACUUM BEING CONTROLLED HIGHER VACUUM SOURCE VACUUM PUMP ADJUSTING NUT CONTROL SPRING VENT PIPE PLUG PUSHER POST STEM LEVER DIAPHRAGM VALVE PLUG DISK ORIFICE ADJUSTING NUT CONTROL SPRING VENT PUSHER POST STEM STEM SEAL THROAT SEAL LEVER DIAPHRAGM CONTROL LINE CONNECTION PORT VALV...

Page 4: ...lled in any position as long as the flow through the body is in the direction indicated by the arrow attached to the body If continuous operation is required during inspection or maintenance install a threeway bypass valve around the equipment 3 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 ...

Page 5: ...essure gauges to monitor inlet pressure and outlet pressure during startup and adjustment procedures Startup 1 Slowly open the downstream outlet shutoff valve if used to vacuum regulator and leave it fully open 2 Slowly open the upstream inlet shutoff valve for Type T208VRM open the control line shutoff valve first followed by the upstream shutoff valve between the tank and vacuum regulator 3 Use ...

Page 6: ...rifice key 5 on Types T208VR and T208VRM or throat seal O ring key 31 and machine screw key 34 on the Type T208VRM remove the cap screws key 2 and separate the lower casing key 4 from the body key 1 4 Remove and inspect the body seal O ring key 11 For Type T208VRM also 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...

Page 7: ... screws key 24 and hex nuts key 23 to fingertightness only 11 Install the upper spring seat key 19 and the adjusting nut key 20 Turn the adjusting nut clockwise until there is enough control spring key 6 force to provide proper slack to the diaphragm key 10 and attached parts Using a crisscross pattern finish tightening the spring case cap screws key 24 and hex nuts key 23 to 90 to 126 inch pounds...

Page 8: ...sing cap key 22 To Convert Constructions The Type T208VR to the Type T208VRM New parts required keys 30 31 and 34 1 Remove pipe plug key 27 Figure 3 from the diaphragm casing key 4 2 Refer to steps 1 and 3 in the Body Area Maintenance section 3 Insert the throat seal O ring key 31 Figure 4 and one machine screw key 34 4 Insert the stem seal O ring key 30 by following steps 1 through 7 and 9 throug...

Page 9: ...450X012 46 Nameplate 47 Drive Screw 4 required 18 8 Stainless steel 1A368228982 48 Flow Arrow 49 Backup Ring 302 Stainless steel 18B3446X012 51 Connector Thread Stud Steel 17B9741X012 stamped on the nameplate Specify the eleven character part number when ordering new parts from the following parts list Parts List Key Description Part Number Spare parts kit included are keys 10 11 12 25 42 and 45 N...

Page 10: ...ly ERSA02741 APPLY LUBRICANT 1 L1 SILICONE GREASE L2 ANTI SEIZE COMPOUND 1 Lubricants must be selected such that they meet the temperature requirements 7 36 25 19 20 51 6 21 18 14 13 41 5 L2 L2 10 7 45 8 16 17 12 11 49 44 42 L1 L1 L1 4 27 23 24 26 46 22 47 43 48 1 2 3 ...

Page 11: ...A02742 APPLY LUBRICANT 1 L1 SILICONE GREASE L2 ANTI SEIZE COMPOUND 1 Lubricants must be selected such that they meet the temperature requirements L1 10 7 45 8 16 17 30 12 11 49 44 13 L1 L1 L1 42 L1 7 36 25 19 51 20 6 21 14 41 18 31 34 5 L2 L2 4 46 23 24 26 22 2 1 48 43 47 3 ...

Page 12: ...ser 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 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 regula...

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