TAILONZ PNEUMATIC Male Straight 1/4 Inch Tube OD x 1/4 Inch NPT Thread Check Valve Through Air Line Quick Insert Check Valve Adapter BSPC1/4-N2 (Pack of 2)
【Working Principle】The pneumatic joint controls the air flow by inserting the air pipe, and the air flows when inserting the air pipe, and the air does not flow otherwise