I replaced my dump valve with s Parker Ball Valve. The Parker catalog is on line at Parker Catalog. I paid $23.55 for the valve in 2009 at Exotic Automation & Supply. I wish that I knew the part number but I don't.
Also take a look at Parkers Fluid Power Systems. Oildyne is a division of Parker.
Whoops. I forgot to say why I replaced the valve. The pump starting running every 5 seconds. After playing with the dump valve, I found out that I could stop the running by backing the valve off by about 1/2". I changed it anyway.
Lorn
From: "Don Gordon" <donaldgordon@bellsouth.net> Date: February 8, 2011 2:58:32 PM EST
Randy, If the pump is cycling and you can’t find a visible leak, it usually the dump valve. They don’t last very long. I am on my third one already (1600 hours). Don
-- Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst LNC2, FB90/92, O-320-D1F, 1,790 hrs, N31161, Y47, SE Michigan
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