Piercing U Charging Refrigerant Universal Retrofit Tools & Equipment Review

Package content: 3 pieces BPV-31 piercing tap valve kits (each kit contains 1 piercing valve, 1 hex key and 2 adapters), including R134a u-charge hose with gauge and can tap, universal retrofit valve with a dust cap, 5 pieces in total, bring you more convenient for replacement; All our replacement kits are made of corrosion-resistant metal that won't wear out or rust over time, with anti-leaking design that will be safer for you. Easy to install: our BPV-31 piercing tap valve kits come in compact design that only requires a 2-inch clearance area for installation and use, and you only need 1 hex key wrench (included) to install the kit; If you want to attach the gauge with BPV-31 piercing tap valve, you need a retrofit valve (included). R134a Charging hose with gauge : 24 inch hose with R-134a can, it is a good air conditioning conversion adapter kit, it's completely applied to replace R12, R22, R502 to R134a, and 90-degree push and lock coupler with auto shut off, 2 inch pressure gauge with protective boots until-backflow design. Replace model of BPV-31 piercing tap valve: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31; Compatible with 1/4 inch, 5/16 inch, 3/8 inch outside diameter pipes. Universal retrofit valve: the retrofit valve converts from R-12 to R-134a air conditioning system and suit for 7/16 inch low side port; Suit for vehicles pre-1994, comes with R-134a refill fittings.