40400 Safety Pressure Valve Replacement

by Harry Colvin
(Lewisville, NC, USA)

Central Pneumatic Air Compressor 2 HP - 8 Gallon Model 40400.


I need to replace the Safety Pressure Valve. Harbor Freight does not have them. Where can I find a valve to replace the one that came on the compressor?

Comments for 40400 Safety Pressure Valve Replacement

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Nov 27, 2018
PRV for 40400
by: Bill

Sure. Do you remember the cut out pressure setting on your 40400?

Add 15-20 PSI to that and google "pressure relief valve for compressor" as I just did and you'll find a bunch in the $6 - $15 range, and of which, if it has the cracking pressure around 15-20 PSI higher than your cut out, and the thread on it fits the hole (likely 1/8" NPT but not sure) that the old one threaded into, you're good to go.

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