BPV31 Piercing Tap Valve Kits Piercing Valve with R134a Charging Hose Can Tap with Gauge Recharging Hose Kit Connect Can of R134a R12R22 Refrigerant Port

??Easy to use?The length of hose is 19",come with gauge for easily viewing ,R-134a can be connected to the R-12 / R-22 ??Applicability? BPV-31 bullet piercing tap valve compatible with 3 different sizes of tubing: 1/4", 5/16", 3/8" (outside diameter pipes) ??High Quality? Made of corrosion-resistant metal and the hose adopted quality rubber material, high pressure resistance and sturdy ??Repalcement for the part? AP4502525, BPV31D, MPV31, GPV14, GPV31, GPV38, GPV56 ??Package including?BPV-31 piercing tap valve kits (1 x piercing valve, 1 x hex key and 2 x adapters) + R134a R22 R12 charging hose with gauge