Structure: Air compressor pressure valve with 1/4 inch relief valve and 2 pressure gauges. With on/off switch. The piston seal is V-shaped seal, which has good sealing performance and good wear resistance. Wear resistance and good stability. Advantages: Flexible piston structure, the flow rate is 30% higher than that of the piston, as in the traditional diaphragm type. Function: The valve body structure is equipped with an overflow port for quick decompression. Performance: The air compressor pressure valve features high switching accuracy and fast response. Features: The air compressor pressure valve switch is small, lightweight and easy to use. Easy installation. Help with installation. Save electricity from air compressor. With on/off lever. Users can adjust it according to the actual situation. Easy to install and use. Material: Metal + Plastic. Maximum voltage: 240V. Maximum current: 20A. Pressure switch control range: 90 to 100°C 120psi. Connection: G1/4. Diameter: G1/8.