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307107N

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

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 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . 9

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Important Safety Instructions

Read all warnings and instructions in this

manual. Save these instructions.

Summary of content (8 pages)

PAGE 1
Instructions-Parts List STAINLESS STEEL, WATERBASE COMPATIBLE Back Pressure Valve 307107N EN 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 300 psi (2.1 MPa, 21 bar) Maximum Inlet Pressure 200 psi (1.
PAGE 2
WARNING WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury. • This equipment is for professional use only. • Read all instruction manuals, tags, and labels before operating the equipment. • Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor. • Do not alter or modify this equipment. • Check equipment daily. Repair or replace worn or damaged parts immediately.
PAGE 3
Operation Installation KEY A B C D Fluid supply line Air spray gun Fluid pressure regulator Air supply line E F G Adjusting screw Back pressure valve Fluid return line A D B C E G F 8719A FIG. 1 Connect the line to the 1-1/4 in. npt(f) inlet and outlet. Make sure the flow direction agrees with the IN and OUT markings on the valve body. CAUTION Handle the back pressure valve with care to avoid damaging the diaphragm.
PAGE 4
Operation Service Pressure Relief Procedure WARNING PRESSURIZED EQUIPMENT HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. To reduce the risk of an injury from accidental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you • • • • Are instructed to relieve the pressure Stop spraying Check or service any of the system equipment Install or clean the spray nozzle 1. Shut off the pump. 2.
PAGE 5
Operation Parts 7 13 19 1 See TOP VIEW 5 2 Torque to 10–12 ft-lb (13.5–16 N-m) 6 Apply anaerobic pipe sealant to threads Apply lithium-base grease 3 PTFE side down 7 Lubricate threads 4 Torque to 15–20 ft-lb (21–27 N-m) 1 1 TOP VIEW 5 6 7 3 2 4 1 6 5 6 ti24721a Torque screws (1) to 120–130 in-lb (13.6–14.7 N-m) in order shown 20 2 16 22 12 3 18 17 11 7 8 5 4 10 14 5 3 15 Model 208997, Series E Stainless Steel Back Pressure Valve Includes items 1 to 22 Ref. No. Part No.
PAGE 6
Operation Dimensions 4 in. (102 mm) diameter 7.25 in.
PAGE 7
Operation Technical Data Stainless Steel, Waterbase Compatible Back Pressure Valve US Maximum inlet pressure 300 psi Regulated pressure range 5-200 psi Inlet and Outlet size Gauge port size Wetted parts Weight Notes Canadian Registration Number (CRN): Alberta – 0C4155.2 Ontario – 0C4784.5 Metric 1.4 MPa, 14 bar 0.035-1.4 MPa, 0.35-14 bar 1-1/4 in. npt(f) 1/4 in. npt(f) 304 & 316 stainless steel, celcon Diaphragm: nylon fabric base, with impregnated buna-N, and material side is PTFE coated. 8.5 lb. 3.
PAGE 8
Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.