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Instructions for Repair of 3 Inch Non-Indicating or Indicating
This repair kit is universal for either non-indicating or indicating relief valves. Some parts will not be used depending on which
type of valve is being repaired.
1. Open drain cocks in relief valve and piping to make sure all of the water is drained. Disconnect hose or tube connecting
relief valve to pilot valve assembly.
2. Remove bolts, nuts and washers attaching the relief valve to the pump. Discard O-rings.
3. Remove six cap screws attaching cover to body. Remove cover, spring, main valve and gasket. Pry O-ring from main
valve. Discard gasket and O-ring.
4. Examine spring for distortion, set or other defects. Remove any nicks or burrs outside of main valve or in bore of body.
Discard any defective parts.
Note: Always use new gaskets and O-rings supplied with the repair kit during reassembly.
5. Apply a light coat of mineral oil or other light weight oil to O-ring (V10) and slide in groove of main valve. Be sure to remove
any twists from O-ring.
6.
Insert spring in cover. Position cover and gasket against flange of body with drain pointing down, and install six cap
screws.
7. Attach relief valve to pump using O-rings, bolts, nuts and lock washers. Lubricate O-ring used on connecting pipe.
8. Connect tube or hose from pilot valve assembly to relief valve.
If a tube or hose is used to drain the cover, it should be connected to a separate drain valve and not to
the manifold drain valve.
I-2021
Relief Valves and 4 inch Relief Valves
3 Inch Non-Indicating Relief Valve Repair
WARNING
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