Features 1、Small size and light weight,portable and convenient to carry with.High accuracy and responsive. 2、The piston seal adopts a V-type seal ring, which is well sealed and wear-resistant. 3、Piston structure, flow rate is 30% larger than traditional diaphragm flow. 4、The valve body structure has an overflow port and the decompression speed is fast. 5、Easy to install, can be installed reversely vertically horizontally assembly according to customer's preference, appearance is beautiful. 6、Widely used in direct line air compressor, oil - free mute air compressor, small belt air compressor. Specification Item Type:Pressure Switch Assembly Connector Size:G2-1/4in Pressure Gauge Size:G1/8in Pressure Range:0.05~1.2Mpa Maximum Flow Rate:3000l/min Package List 2 x Switch 2 x Pressure Gauge 1 x Pressure Adjustment Valve 1 x Safety Valve 1 x Double End Connector 1 x Needle Valve