ST128415AV Pilot Valve 135 PSI
RIDGID Portable Gas Air Compressor Parts
Found under the following brands:
Campbell Hausfeld, Maxus, Westward, Popular Brands, Craftsman, Kobalt, Speedaire, Ridgid
Male Flare inlet and 1/2" MPT outlet. Cuts in at 105 and out at 135. This is the brains of your air compressor. It unloads pressure to the tank when it hits 135 psi. Do NOT attempt to adjust this part unless you have experience in adjusting unloader valves.
This item fits the following models
This part is typically found on continuous running units like gas powered units. When the tank gets to the cut out pressure, the excess air is blown out of the unloader valve, hence the name unloader valve.