Air compressor unloader control pilot valve. This valve is just like our other unloader pilot valves with the male threads on the bottom except this is a shorter version with 1/4" female threads on the bottom so it doesn't take up so much room in cramped spaces. This valve is the same size in diameter but the height is 3 1/8" inches which is about an inch shorter than the other unloader valves. The valve is used to operate a compressed air system at a constant run with a preset pressure operating range to actuate throttle controls, intake unloaders or air-actuated discharge valves. The valves preset operating range is 115-130 psi, it has 1/4" female npt threads that would be used for air hook-up or screwed onto the compressor tank and has 1/8" female npt threads on the side of the valve as shown in the picture which is the port used to control a throttle, intake unloaders or discharge valve. If more than one outlet is needed it is common to use a "tee" to make multiple ports. Specifications: Operating pressure: cut-in pressure is 115 psi and cut-out pressure is 130 psi Max operating temperature: 300 degrees F Max operating pressure: 200 psi Air inlet threads: 1/4" female npt which measures about 1/2" in diameter Air outlet threads: 1/8" female npt which measures about 11/32" in diameter Also equipped with a manual unloader/control lever which is located at the top of the valve. This valve is precision machined and all brass construction with a stainless steel mesh filter on the intake side of the valve for a dirt-free operation.