Review on Adjustable Pressure Relief Control Devices by James Womble

This is an adjustable pressure relief valve. It is marked 10-100 (PSI). In my case it settles at about 8 psi. The upper limit markings on the device appear to be fairly close to my reading but slightly past the lower limit. You actually need a pressure gauge to be sure of the set pressure if you want accuracy. This type of regulator works by releasing air to atmosphere on the exhaust side when the air pressure on the exhaust side is higher than the governor setting. For what it is - it works well and I'm happy with it for my application. This type of regulator is typically used on a relatively small 1/2 horsepower air pump or compressor. or less, e.g. B. for airbrushing or even for inflating car tires, where the compressor runs continuously during use. Compressors with large reservoirs take a different approach - they use an electrical pressure sensor to turn the motor on and a sequential pressure regulator to supply air from the reservoir. These two types are not compatible with each other.