SURIEEN 51" AC Recharge Hose with Gauge for R134a R12 R22 — 51-inch Rubber Hose, Brass Fittings

SURIEEN 51" AC recharge hose with built-in gauge and adapter set lets you attach R134a, R12 and R22 refrigerant cans to automotive and small HVAC systems for accurate low-side charging.

This 51-inch charging hose kit is built to reach confined service points while offering clear pressure and temperature readings during refrigerant transfer. Machined brass fittings, a solid rubber hose and a readable analogue gauge combine to give DIYers and technicians an affordable way to connect refrigerant cans, control flow and monitor low-side pressure safely. The kit includes a universal can tap, an R134a quick coupler and an R410A straight adapter to broaden compatibility with common refrigerant service ports.

How does this hose make recharging a car or mini-split easier?

The extra length and flexible construction let you reach hard-to-access service valves without awkward bending. The quick coupler and can tap allow one-person operation: open the can, attach, and let refrigerant flow while the gauge shows pressure in real time. Color-coded temperature and pressure scales reduce interpretation errors when matching refrigerant type to system requirements.

• 51-inch hose for better access to vehicle and wall-mounted units
• Universal can tap for puncturing refrigerant cans easily
• Quick coupler speeds attachment to low-side service ports
• Color-coded scales for R134a, R12 and R22 temperature/pressure readings

What measures of safety and durability are built into the kit?

Fittings are precision-machined from brass alloy to resist corrosion and provide a tight seal under pressure. The hose itself is made from durable rubber designed for refrigerant use, and the gauge housing protects the readout while giving burst and working pressures that meet light professional needs. Clear instructions for setting the gauge needle ensure accurate zeroing before use.

• Brass alloy connectors for leak-resistant joins
• Rubber hose rated for frequent handling and refrigerant exposure
• Gauge with 600 psi working and 3000 psi burst reference
• Easy-to-adjust gauge lid for correct zeroing

Which refrigerants and system types does this set support?

The kit is supplied with fittings to handle popular automotive and home refrigerants: R134a, older R12 systems, and R22 lines for certain HVAC applications. An included R410A adapter provides a thread conversion commonly required for mini-split or newer systems, though users should confirm system compatibility and service requirements before connecting. This kit is intended for low-side charging and not for high-side pressurized service.

• Direct R134a quick coupler for most modern vehicle systems
• Can tap suitable for R134a, R12 and R22 refrigerant cans
• 1/4" SAE male to 5/16" SAE female adapter for R410A fittings
• Low-side use only—appropriate for evacuation and refill steps

How do I read and use the gauge properly during charging?

The gauge displays pressure in PSI and kg/cm² and has color-coded temperature scales for each refrigerant type. Before charging, ensure the needle rests at zero by opening the gauge cover and adjusting the small calibration knob if necessary. Attach the coupler to the low-side port, puncture the refrigerant can if using the can tap, then open the can valve gradually and monitor the gauge when introducing refrigerant into the system.

• Zero the gauge with the lid open if needle not at 0 psi
• Follow system-specific target pressures—use the correct color scale
• Open can valve slowly to avoid rapid pressure spikes
• Close connections and check seals after charging

Who is this for: SURIEEN's 51" AC recharge hose with gauge suits vehicle owners who perform their own air conditioning maintenance, HVAC hobbyists, and technicians needing a portable low-side charging solution. It’s especially useful where extra hose length, clear pressure readouts and multiple adapter options speed routine service. If you require certified professional HVAC recovery or high-side servicing, pair this kit with the appropriate recovery equipment and safety protocols.