Piston seal adopts v‑type sealing ring, good sealing, wear‑resistant and stable. Piston structure, the flow rate is 30% higher than that of traditional diaphragm type. The valve body structure has overflow port, for fast pressure reduction Air compressor pressure valve switch features high accuracy and quick response Small size, light weight, and easy to install Connector: 2-G1/4 Gauge Diameter: G1/8 Applicable pressure range: 0.05-1.2Mpa Maximum Flow: 3000L/min Weight: 580g Note:Please note that the new type and old type of this product be shipped randomly and the designation not be accepted, and make sure you 't mind before you place the order. Colour:As Shown Material:Plastic+Metal Package Contents: 1 x Air Compressor Pressure Valve Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.