Europart Universal Bullet Line Tap Valve fits for R12, R22, R134a and R502 systems. Patented valve gasket application provides 50 times more sealing area than competitive 'o' ring types. A sealing force of over 180-inch per pounds, torque d with 500 lbs, pressure d at 250f. Precision piercing needle is engineered for concentricity and hardness to insure perfect seating every time. Applications: install on the high side as a permanent valve on the job and install on round suction lines or uneven tubing.