SURIEEN R134A AC Recharge Hose Kit — 19-inch hose with BPV31 piercing valve and 2.75" multi-scale gauge

SURIEEN R134A AC Recharge Hose Kit is a ready-to-use HVAC charging assembly that combines a 19" R134a hose, a multi-scale gauge, and a BPV31 bullet piercing tap valve for fast, secure refrigerant top-ups and diagnostics.

This kit bundles the core tools technicians and DIYers need to connect R-134a cans to legacy service ports safely: a 19" charging hose with a 2.75" gauge calibrated for R134a, R12 and R22; a BPV31 three-in-one piercing valve that fits 1/4", 5/16" and 3/8" tubing; and a 1/4" adapter with valve core for mini-split and refrigeration fittings. All components are designed for straightforward installation, leak prevention, and repeated field use without requiring specialized tools beyond the supplied hex key.

How does the gauge help me charge and diagnose an AC system?

The included 2.75" gauge displays pressure scales for R134a, R12 and R22, making it easy to read operating pressure and estimate refrigerant charge. It mounts directly on the 19" hose so you can monitor pressure during service or topping-up without extra couplings.

• 2.75" analog face with multi-refrigerant scales
• Direct hose mounting for single-connection monitoring
• Helps identify low or high-pressure conditions quickly

What tubing sizes and fittings will the BPV31 piercing valve work with?

The BPV31 bullet piercing tap is a three-position valve that accepts 1/4", 5/16" and 3/8" tubing, so it adapts to most HVAC and refrigeration lines. It ships with two adapters and a hex key to install and remove the piercing pin without specialized tools.

• Fits 1/4", 5/16" and 3/8" copper or aluminum tubing
• Includes hex key and two adapter sleeves for secure fit
• Designed to minimize accidental refrigerant loss during installation

Can I use this with mini-split systems and different refrigerants?

The 1/4" to 1/4" adapter with valve core is compatible with many mini-split service ports and standard HVAC fittings. The gauge is calibrated for R134a, R12 and R22; always confirm your system refrigerant type before charging and follow manufacturer safety guidance.

• Includes 1/4" adapter with valve core for mini-splits and refrigeration
• Gauge shows R134a, R12 and R22 pressure scales
• Not a substitute for professional leak detection or refrigerant identification

Is the kit durable and easy to install?

Components are made from robust materials and factory-tested for field durability; the piercing valve installs using the provided hex key and adapters. The compact hose and valve design aim to simplify setup and reduce the chance of accidental discharge while working in tight spaces.

• 19" reinforced charging hose with secure fittings
• BPV31 valve engineered for repeated installations
• Simple assembly—hex key included—no special tools required

Who this is for: This SURIEEN kit is suited for HVAC technicians, refrigeration service personnel and knowledgeable DIYers who maintain R134a systems or need a temporary tap solution for diagnostic work. It’s ideal when you require a portable, all-in-one charging hose with a readable gauge and a versatile piercing valve, but it should be used by people familiar with refrigerant handling, local regulations, and proper safety procedures.