General description The R134a Refrigerant Charging Hose is designed for efficient charging of freon refrigerant in refrigerators and air conditioners. It features a 19" long hose and includes a BPV31 piercing valve, making it suitable for connecting to R-12/R-22 service ports. Technical specifications Hose length: 19 inches Compatible with: R-134a, R-12, R-22 BPV31 piercing valve compatibility: 1/4", 5/16", 3/8" OD hoses Gauge readings: R134, R12, R22 Replaceable part numbers: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31 Compatibility and accessories Includes 1 x R134a Refrigerant Charging Hose with Gauge Includes 2 x BPV31 Bullet Piercing Valve Kit (1 x piercing valve, 1 x hex wrench, 2 x adapters)