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307107P

EN

Instructions-Parts List

STAINLESS STEEL, WATERBASE COMPATIBLE

Back Pressure Valve

Used in circulating systems to provide regulated back pressure to the spray gun(s) and to 
maintain proper circulating pressure throughout the system. For professional use only.

Model 208997, Series E

Stainless Steel Back Pressure Valve

Model 903508, Series A

Stainless Steel Back Pressure Valve with a Fluid Dampener 
Pressure Gauge

300 psi (2.1 MPa, 21 bar) Maximum Inlet Pressure
200 psi (1.4 MPa, 14 bar) Maximum Regulated Pressure

Contents

Warnings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Operation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Parts   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Dimensions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Technical Specifications  . . . . . . . . . . . . . . . . . . . . . 7

Graco Standard Warranty   . . . . . . . . . . . . . . . . . . . . 8

Important Safety Instructions

Read all warnings and instructions in this 
manual. Save these instructions. 

Summary of Contents for E 208997

Page 1: ...997 Series E Stainless Steel Back Pressure Valve Model 903508 Series A Stainless Steel Back Pressure Valve with a Fluid Dampener Pressure Gauge 300 psi 2 1 MPa 21 bar Maximum Inlet Pressure 200 psi 1...

Page 2: ...The maximum inlet pressure of this equipment is 300 psi 2 1 MPa 21 bar Follow the Pressure Relief Procedure on page 4 if the spray tip clogs and before cleaning checking or servicing the equipment Do...

Page 3: ...irculating pressures in the system Operation NOTE The back pressure valve controls pressure ahead of its intake Turn the adjusting screw clockwise to increase pressure and counterclockwise to decrease...

Page 4: ...16 N m 9 Carefully inspect the seat 10 for damage wear or dirt These things could cause the regulated pres sure to creep Replace the seat if necessary 10 Replace the seat gasket 14 when replacing the...

Page 5: ...033 PLATE spring 1 8 187873 GAUGE 0 to 200 psi 0 to 1 4 MPa 0 to 14 bar 1 8 208855 GAUGE fluid pressure dampener 1 10 188006 SEAT stainless steel 1 11 188512 RETAINER diaphragm stainless steel 1 12 17...

Page 6: ...Operation 6 307107P Dimensions 7 25 in 184 mm 4 in 102 mm diameter 1 1 4 npt f in let and outlet 8717A...

Page 7: ...psi 0 035 1 4 MPa 0 35 14 bar Inlet and Outlet size 1 1 4 in npt f Gauge port size 1 4 in npt f Wetted parts 304 316 stainless steel celcon Diaphragm nylon fabric base with impregnated buna N and mate...

Page 8: ...n material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRA...

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