Detroit Air Compressor Unloader Valve

System air to the compressor unloader port.

Detroit air compressor unloader valve. Air entering the unloader port acts on the unloader piston causing the figure 4 typical compressor drive flanges piston to move upwards away from its seat on the valve plate assembly. This will effectively emulate the operation of the unloader valve as any air trapped over the piston will flow into the tank as the tank pressure drops. If your electrically powered air compressor is having a hard time starting try pulling the power cord and opening the drain valve to void all air from the tank. Simply refer to the chart below for the appropriate kit and reman compressor part.

Started driving same thing pressure dropped below 100psi and the compressor would not kick in. What the unloader valve does is that is responds to the compressor pressure switch turning the power off to the motor and allows any air that may be trapped over the piston or pistons on a multi cylinder air compressor to vent to atmosphere removing any load that the trapped air may have. Rotary screw air compressors piston air compressors air dryers quiet cabinet type air compressors oil free air compressors pressure vessels. Plug the compressor back in.

Standard north american unloader valve eliminates any special valve requirements or hardware have a series 50 or 60 detroit diesel engine and want to change over to a bendix ba 922 from your current bendix tu flo 750 or duraflo 596 compressor. From searching online and talking to a couple of people i understand i need an unloader valve. Signal line from governor to the air dryer and finally last option and right one was unloader valve in my tu flo 550 air. When the unloader piston is unseated an detroit diesel s60 figure 6 ba 921 compressor unloader system compressor.

Then after a few of these stop and build pressure exercises it started working fine it would kick in at 100 105psi to build it up to cutout at 125. Detroit series 60 air compressor tu flo 550 unloader valve change.