Gas Air Compressor Unloader Valve Adjustment

Depending on the make and size of compressor the unloader valve may take many forms.

Gas air compressor unloader valve adjustment.

Unscrew both locknuts and remove the adjustment from the pilot s body. Support seeker patrons and other support. If pilot valve does not unload as tank pressure approaches 135 psi slowly turn top end setting 4 counterclockwise until pilot starts to unload prematurely at 105 psi. Secure the differential locknut when the differential screw is in contact with the ball.

Types of compressor unloader valves. Watch this fix before you start buying parts. 1 if pilot valve does not unload as tank pressure approaches 135 psi slowly turn top end setting 4 counterclockwise until pilot starts to unload prematurely at 105 psi. This fix my compressor website is focused on the do it yourself and small workshop air compressor and most of these are reciprocating type air compressors.

The unloader valve should begin unloading at felt muffler and cause engine to idle down. As tank pressure approaches 135 psi the unloader valve should begin unloading at felt muffler and cause gas engine to slow down to idle speed. 2 turn top end setting 4 clockwise in 1 4 turn increments tap down on. Hand tighten pilot cap assembly into pilot hole body then back out turn and differential adjustment.

The unloader valve that is shown in the image above is typically found on the side of a compressor pressure switch and is operated by a toggle lever coming out of the side of the pressure switch. If it is part of the pressure switch you may have to replace the pressure switch to fix the unloader valve problem. When the compressor is unloading listen and feel for any excessive air being released at the top of the valve or the stem. If the unloader valve isn t working replace it.

Place ball into pilot hole in body. First turn off the compressor. Http wp me p6ivyu 1wt buy anything on amazon and support se. Turn the differential screw around clockwise until the pilot seat rests on the internal ball.

There are certain steps to follow when adjusting the unloader valve. The pressure switch trips in response to the low pressure turns on the electric motor and at the same time closes the unloader valve. Then remove the stem and the steel ball. If it is leaking drain all air from the compressor.

Loosen differential lock nut d and adjust differential nut c to desired differential. Pilot valve installation and adjusting instructions pilot valve installation 1.