Features:1/2BSP Female Full Ports One Way Air Check Valve. Specifications:Material: Copper Ni PlatedColor: Silver TonePressure Resistance: 150PSI / 1MPaOperating Temperature Range: -20-60°C.Size: 50mm x 27mm / 1.97" x 1.06"(H*D)Thread Size: 1/2BSP Package Contents: 1 x Air Check Valve