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EMERSON SR8 Sanitary Backpressure Regulator Instruction Manual, Fisher-EN

Summary

This high-quality Type SR8 Sanitary Backpressure Regulator is engineered for reliable pressure control across steam, liquid, or gaseous services in demanding sanitary applications. This essential manual provides detailed guidance on installation, startup procedures, routine maintenance, and full technical specifications. It serves qualified industrial professionals, ensuring proper operation and preventing hazardous conditions when controlling fluid pressures from 0.2 to 8.6 bar.

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Page 1 Text Content

Instruction Manual

Type SR8

D103100X012 January 2022

Type SR8 Sanitary Backpressure Regulator

WARNING

Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion, fire and/or chemical contamination causing property damage and personal injury or death. Fisher™ backpressure 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. If a leak develops or if the outlet continually vents liquid, 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

Figure 1. Type SR8

personnel when installing, operating and maintaining the Type SR8 Sanitary backpressure regulator.

Introduction Type SR8 self-contained backpressure regulators

Scope of the Manual

are suitable for pressure control of steam, liquid

or gaseous service. Typical set points range from This manual provides installation, startup, 2 to 125 psi / 0.2 to 8.6 bar. The regulator is designed maintenance and parts ordering information for the to meet sanitary application and material requirements. Type SR8 Sanitary Backpressure Regulator.

Page Summary Contents For EMERSON SR8 Sanitary Backpressure Regulator Instruction Manual, Fisher-EN

Page 1 Instruction Manual Type SR8 D103100X012 January 2022 Type SR8 Sanitary Backpressure Regulator WARNING Failure to follow these instructions or to properly install and maintain this equipment could resu...
Page 2 Type SR8 Specifications The Specifications section on this page provides the ratings and other specifications for the Type SR8. The following information is stamped on the nameplate fastened on the re...
Page 3 July 2008 Type SR8 Type SR8 Sanitary Backpressure Regulator July 2008 Type SR8 Type SR8 Type SR8 Sanitary Backpressure Regulator INLET PRESSURE LET PRESSURE INLET PRESSURE OUTLET PRESSURE TLET PRESSUR...
Page 4 Type SR8 WARNING CLOSING CAP Regulators should be installed, operated and maintained in accordance with federal, state and local codes, rules and ADJUSTING SCREW regulations and Fisher™ instructions. ...
Page 5 Type SR8 Table 4. Temperature Capabilities TEMPERATURE RANGE SEAT TYPE DIAPHRAGM MATERIAL O-RING MATERIAL Ethylene Propylene Diene (EPDM) EPDM -20 to 275 -28 to 135 Metal Stainless steel PTFE/Fluoroca...
Page 6 Type SR8 1. If damage to the diaphragm or seating surface is 7. Hold wrench flats on plug (key 2), then torque hex suspected or to inspect other internal parts, loosen nut (key 16) to 6 to 8 in-lbs / ...
Page 7 Type SR8 Key Description Part Number Parts Ordering 3 Plug O-ring When corresponding with your local Sales Office or 1/2 and 3/4 in. / 15 and 20 mm bodies sales representative about this equipment, al...
Page 8 Type SR8 Key Description Part Number Key Description Part Number 10 Diaphragm Plate 19 Closing Cap 1, 1-1/2 and 1-1/2 x 1 in. / 1/2, 3/4, 1 and 1-1/2 in. / 25, 40 and 40 x 25 mm bodies GE02642X012 15,...
Page 9 Type SR8 T-HANDLE OPTION VIEW A STANDARD BACKPRESSURE REGULATOR ROTATED 180° WITH ELASTOMERIC DIAPHRAGM SOFT SEAT OPTION VIEW B – METAL DIAPHRAGM FOR STANDARD REGULATOR VACUUM PROTECTION OPTION APPLY ...
Page 10 Type SR8 METAL DIAPHRAGM OPTION VIEW B APPLY LUBRICANT (L) / SEALANT (S)(1): L = ANTI-SEIZE LUBRICANT S1 = THREADLOCKER MEDIUM/HIGH STRENGTH SEALANT S2 = HIGH TEMPERATURE AND MEDIUM STRENGTH THREADLOC...
Page 11 Type SR8 T-HANDLE OPTION SOFT SEAT OPTION DETAIL A VACUUM PROTECTION OPTION METAL DIAPHRAGM OPTION APPLY LUBRICANT (L) / SEALANT (S)(1): L = ANTI-SEIZE LUBRICANT S1 = THREADLOCKER MEDIUM/HIGH STRENGTH...
Page 12 Type SR8 DETAIL A VACUUM PROTECTION OPTION METAL DIAPHRAGM OPTION APPLY LUBRICANT (L) / SEALANT (S)(1): L = ANTI-SEIZE LUBRICANT S1 = THREADLOCKER MEDIUM/HIGH STRENGTH SEALANT S2 = HIGH TEMPERATURE AN...

Manual Details

Brand Emerson
Pages 12
File Size 2.74 MB
Published June 05, 2026
37 views

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Frequently Asked Questions

Who is qualified to service or install this Type SR8 unit?

Only a qualified person must perform installation or servicing of the unit.

What do I do if the regulator develops a leak or constantly vents liquid?

Service to the unit may be required, as failure to correct could result in a hazardous condition.

What connection styles are supported by this backpressure regulator?

Compatible end connections include Tri-Clamp sanitary connections and 1/4 NPT tapped vent connections.

How must I select necessary lubricants or sealants for the unit's operation?

The lubricant and sealant chosen must be selected to meet the required temperature ranges for safe operation.