... superior quality, excellent service & low price. We supply various hand valves (Pneumatic Fitting, Pneumatic Valve, Tube Connector, Pneumatic) which are widely used ... service and competitive prices. OEM is available. Description: 1) The hand valve is used for opening and closing compressed air. 2 ... , R1/8, R1/4, R3/8, R1/2, R3/4 Hand Valve, Pneumatic Fitting, Pneumatic Valve, Tube Connector, Pneumatic