Mudder R134a Refrigerator Recharge Kit with Bpv31 Bullet

The Mudder R134a Refrigerator Recharge Kit is a complete metal can-tap and BPV31 piercing valve set for R134a charging and retrofit conversions, including a gauge-equipped hose and universal retrofit valve.

This kit supplies the essentials for topping off R134a systems and converting pre-1994 R-12 ports to accept R134a fittings. Made from corrosion-resistant metal with a rainbow finish, the components are built for repeated use: piercing valves with heavy-duty seals, a 19-inch charging hose with a multi-scale gauge, and a universal retrofit valve for low-side service ports. The package includes multiple piercing kits so you can replace worn parts without delay.

How does this kit connect R134a cans to older service ports?

The kit includes a 19-inch R134a charging hose with a can tap that interfaces with R-12/R-22 service ports using a 1/2-inch end. A universal retrofit valve is provided to adapt 7/16-inch low-side ports from R-12 systems so the gauge and hose can engage securely.

• 19-inch hose with 90-degree push-lock coupler and auto shutoff
• Gauge calibrated for R134a, R12, and R22 pressures
• Universal retrofit valve fits 7/16-inch low-side ports for conversion
• Can tap connects standard R134a cans to the hose

What are the piercing valve features and compatibility?

The BPV31 bullet piercing valves are metal, corrosion-resistant, and designed for durable sealing. Each piercing kit contains the valve, a hex key, and adapters to fit different tubing outside diameters so they work with common refrigerator and automotive lines.

• Replaceable models include aP4502525, GPV14, GPV31, GPV38, GPV56, MPV31
• Compatible with 1/4", 5/16", and 3/8" outside diameter pipes
• Sealing area much larger than an O-ring with tested torque and pressure resistance
• Each kit includes a hex key for installation

How durable and leak-resistant are the parts?

Components are constructed from corrosion-resistant metal and feature a high-sealing-force design. The sealing assembly has been torque and pressure tested to provide a robust, long-lasting connection and reduce the risk of refrigerant loss during service.

• Metal construction with anti-leak engineering for longevity
• Sealing force rated at 180 inch-lbs and pressure-tested at 250 °F
• Torque-tested with 500 lbs for reliability under strain
• Rainbow finish for corrosion resistance and easy identification

What should I know before using the kit?

The kit is intended for R134a charging and R-12 to R134a retrofits via the supplied universal valve. It is not compatible with R-410A refrigerant. If you plan to attach the pressure gauge directly to a BPV31 piercing valve, ensure you have or install the retrofit valve to create the correct interface.

• Not suitable for R-410A refrigerant use
• Retrofit valve required to connect the gauge to BPV31 piercing taps
• Three BPV31 kits included for multiple uses or replacements
• Contact manufacturer for fit questions or technical support

Who is this for: DIY mechanics, mobile refrigeration technicians, and vehicle owners converting older A/C systems who need a robust, reusable R134a can tap and piercing valve set. It’s ideal for people who service multiple units or want spare piercing kits on hand; it’s not intended for R-410A systems or tasks requiring factory-level refrigerant recovery equipment.