New Pilot Discharge Unloader Valve Check Valve for gas air compressor 95-125 psi

I wanted to build an air compressor out of parts that had come mostly from other compressors that I had had over the years, I wanted a gas engine powered compressor, so I took the tank and the pump and located a proper sized gas engine and built a deck to bolt to the tank and then bolted the pump and the motor on to the deck, using this Unloader to regulate the pressure building in the tank, for a continuous run unit the unloader works like the pressure switch on an electric motor compressor. it controls the air going into the tank or lets it exit to the atmosphere,one still wants to use a safety relief valve as well, I also added the throttle control as well that when the unloader says the compressor is full, it lets the engine go to a idle until air is called for again an then it speeds up the engine and fills up the tank, 'It works well and even on a small tanked electric compressor it will let the motor keep running and not on on and off, I had an unloader on a compressor I used in construction and had both a unloader and pressure switch and by switching to by pass the pressure switch the the unit would then run with the unloader for operations that would cause the motor to rapidly start and stop, it worked well for some operations, (would use it for nailing roof and floor decks)

Did not receive the right size. However with a few bushings and a little creativity this worked great. Controls my gas air compressor like it should. Had to adjust to turn pressure down.

Viene con la calibración precisa para un compresor pequeño

Throttle control port was misaligned and would not stay aligned as was machined badly.

Standard fittings. it will not fit a Hitachi machine without modifications

works great after a little adjusting

Have started construction of portable air compressor hope to have it completed by end of the month. Wish me luck.

The unloader is heavily built and fits the requirements for a road servicevehicle that needs this pressure range (140psi.--175psi). This unit workson all gasoline powered air compressors.