Structure: Air compressor pressure valve with 1/4" outlet safety valve, with 2 pressure gauges. With on/off switch. The piston seal adopts a V-shaped seal, which has good sealing performance, wear resistance and stability. Advantages: piston structure, the flow rate is 30% higher than that of the traditional diaphragm type. Operation: The valve body structure has an overflow port, which can quickly reduce the pressure. Performance: The air compressor pressure valve switch can provide fast response and high precision. Features: The air compressor pressure valve switch is small in size, light in weight and easy to install. Product Manual The air compressor control valve regulator with pressure gauge can quickly reduce the pressure The main function of the valve is to adjust the closing and starting pressure of the air compressor. Features: Help you save electric energy of the air compressor. High precision voltage regulation and sensitive feedback. With on/off lever. Users can make adjustments according to their actual situation. Easy to install and easy to use. Features: Material: metal + plastic. The size of the box is 180 * 105 * 110 mm Net weight of the product set: 590 grams Rated voltage: 220 / 380V Exhaust pipe: 6MM Contact method: normally closed Connector size: 12MM, 1/4 inch Outer diameter of pressure relief port: 9.5mm Max current: 20A Working pressure: 5-8KG Life: 80000 times