05/14
FG STYLE ADJUSTABLE PRIORITY DIVIDER
INSTALLATION & USER GUIDE
SPECIFICATIONS:
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Rated for 3000 psi (207 bar).
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Rated for 0-12 gpm (0-56.8 lpm) max. priority.
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30-Micron filtration recommended.
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Weight - FG52 & FG54 = 8 lbs. (3.6 kg).
FEATURES:
Priority Port
– The priority port is the port located on the same side as the large hex jam nut.
Excess Port
– Flow coming from the excess port is also pressure compensated.
MOUNTING & ADJUSTMENT INSTRUCTIONS:
Mounting
– Valve can be mounted in any orientation. Valve must be mounted on a flat surface. Special attention should
be paid to not bend or twist the casting when mounting. Doing so may cause the compensator spool to bind, causing
valve to fail. It is recommended to install washers between casting and mounting surface.
Relief Adjustment (FG52 valve)
–Relief setting is factory preset to 1500 psi, unless otherwise noted within model code.
Relief valve can be set anywhere within the range of 500 psi to 3000psi.
To adjust relief pressure:
There is a 5/16” hex screw located inside the excess port. Turning the screw in, or
clockwise 1 full turn will increase pressure by 800 psi.
FREQUENTLY ASKED QUESTIONS:
Q:
Can the priority port be blocked or plugged?
A:
No. If the priority port is blocked or plugged for any reason the compensation spool will attempt to compensate for
increasing pressure, and shift thus blocking the excess port as well, and rendering valve inoperable. DO NOT BLOCK THE
PRIORITY PORT.
Q:
Can the Excess Port be blocked or plugged?
A:
The Excess Port can be blocked or plugged, but doing so requires a pressure compensated or load sense pump. Plugging
the excess port may create instability issues that can be remedied by switching the compensator spool to a different spool.
(Part # XDC609)
Q:
Can flow be sent in reverse through valve.
A:
Yes, but only if you have a FG54 valve. If you’re unsure of your valve’s model number, please contact factory for
assistance.
TROUBLESHOOTING:
Problem: Valve chatters or has stability issues.
Instability generally occurs when the valve sees an application that has
rapidly changing loads. (ie: Fan, Vibration, etc.) Because of these changing loads the compensator spool tries to compensate
rapidly. This causes the valve to become unstable. An unstable valve will hunt, make noise, and/or chatter.
Solution:
Most instability issues can be solved by using a different compensator spool. A replacement spool designed for
load changing applications can be ordered. (Part #: XDC609)
