User's Manual

306–640
Rev . E
Supersedes D
First choice when
quality counts. 
INSTRUCTIONS–PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
Back Pressure V alve
300 psi (21 bar, 2.1 MPa) Maximum Inbound Pressure
180 psi (12.4 bar, 1.24 MPa) Maximum Regulated Pressure
Model 205–122, Series C
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  
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 uncertain about usage, call your Graco
distributor.

Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
 Check equipment daily . Repair or replace worn or damaged parts immediately .
 Do not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a 300 psi (21 bar, 2.1 MPa) maximum inbound pressure and a 180 psi (12.4 bar ,
1.24 MPa) maximum regulated pressure.
 Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer ’ s warnings.
 Comply with all applicable local, state, and national fire, electrical, and safety regulations.
PRESSURIZED EQUIPMENT HAZARD
Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin
and cause serious injury .
 Do not stop or deflect leaks with your hand, body , glove or rag.
 T ighten all fluid connections before operating the equipment.
 Follow the Pressure Relief Procedure on page 2 whenever you: are instructed to relieve pres -
sure; stop spraying; clean, check, or service the equipment; and install or clean the spray nozzle.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1994, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001