Pressure control valve: The operating voltage of the gate valves is 220V/380V. Please ensure the voltage is within this range when using. Air compressor accessories. Pressure regulating valve: Safety release device made of copper for added safety. Pressure gauge with metal housing, not easy to break. Air compressor regulator. Pressure control valves: Use a pressure gauge, which is more durable. The part is a quality specification assembly. Compressor pressure control. Air compressor pressure valve: Air compressor pressure to turn on the power and compressor motor. Air compressor shut-off valves. Air compressor control valves: Complete accessories, simple installation, easy to use; even beginners can get started easily. Air pressure valve.