User's Manual

This manual contains IMPORTANT
WARNINGS AND INSTRUCTIONS
READ AND RETAIN FOR REFERENCE
INSTRUCTIONS–PARTS LIST 307–751
Rev. F
Supersedes E
Tamper-Resistant
CIRCULATING ‘Y’ RESTRICT OR V ALVE
300 psi (21 bar) MAXIMUM INBOUND FLUID PRESSURE
Restricts fluid flow to the gun in a circulating system
Compatible with water-base fluids.
Model 223–617, Series B
1/4 npsm inlet and return ports;
T wist-lock coupler
Model 223–618, Series B
3/8 npsm inlet and return ports;
T wist-lock coupler
Model 223–619, Series B
1/4 npsm inlet and return port;
3/8 npsm swivel coupler
Model 223–620, Series B
3/8 npsm inlet and return ports;
3/8 npsm swivel coupler
U.S. Patent No. 4,615,485
U.K. Patent No. 2,176,265
Foreign Patents Pending
WETTED P ARTS: Stainless steel, Acetal,
Homopolymer , PTFE 
.
INSTALLATION & OPERATION
WARNING
This
valve is for use ONL Y in low pressure circulat -
ing systems. To reduce the risk of serious bodily
injury, which could result from over-pressurizing
and
rupturing the valve, NEVER supply more than
300 psi (21 bar) fluid pressure to the valve.
To reduce the risk of splashing, always relieve the
air and fluid pressure to the gun before removing
this
valve for any reason.
Connect the circulating fluid hoses to the valve.
Connect the valve to the gun.
For twist-lock couplers, align the pins on the stem with
the coupler slots and push the coupler onto the stem.
Turn
the stem clockwise to lock it.
T o adjust the fluid flow , insert the adjustment tool (A) as
shown
in Fig 1. T urn the tool clockwise to decrease flow
and counterclockwise to increase flow .
Fig 1
A
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
 COPYRIGHT 1990 GRACO INC.
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