Luney AC Manifold Gauge Set — 3-Way Refrigerant Tester with 4 ft Hoses, Oil-Filled Gauges

The Luney 3-way AC manifold gauge set is a complete, professional-grade kit for diagnosing, evacuating, and charging vehicle and small refrigeration systems using R134a, R12, R22, or R502.

If you work on automotive air conditioning, home HVAC, or light commercial refrigeration, this all-in-one kit bundles the gauges, hoses, couplers, and adapters needed to test pressure, pull vacuum, and add refrigerant. The set pairs large oil-filled gauges with reinforced 4-foot hoses and heavy brass fittings, giving technicians and informed DIYers a balance of accuracy, durability, and safety in the field.

How accurate and durable are the gauges for repeated shop use?

The Luney gauges use 2.6-inch, dual anti-shock faces and an oil-filled core to reduce needle flutter and improve reading stability. A user-calibration screw and ±1.6% accuracy specification help maintain reliable measurements over time.

• Large, easy-to-read 2.6" dials with dry secondary scale
• Oil-filled mechanism to damp vibration and improve low-temperature performance
• User calibration screws for field adjustments
• Durable zinc alloy and brass construction for repeated use

What refrigerants and systems can this manifold handle?

This manifold is built to service multiple common refrigerants—R134a, R12, R22 and R502—making it handy for automotive AC, household air conditioners, and small commercial refrigeration. Use the included adapters and can taps to adapt fittings and charge or recover as appropriate for the refrigerant and equipment.

• Supports R134a, R12, R22, and R502 refrigerants
• Includes 1/4" to 1/2" Acme adapter for diverse application needs
• Self-sealing and piercing can taps for refrigerant cans and service ports
• Suitable for automotive, residential, and light commercial systems

How safe and reliable are the hoses and couplers during service?

The three color-coded PVC hoses feature a four-layer reinforced build rated for a working pressure of 600 PSI and a burst rating to 3000 PSI, reducing rupture risk. Each hose uses adjustable 1/4" quick couplers and extra gaskets to help ensure leak-resistant connections while you evacuate, test, or charge systems.

• 4-foot color-coded reinforced hoses for clear high/low/service identification
• 4-layer PVC construction with 600 PSI working pressure rating
• Adjustable 1/4" quick couplers for fast, secure connections
• Extra gaskets included to maintain leak-free sealing

What accessories and features are included for professional workflows?

The kit arrives in a sturdy carrying case and contains a full complement of service accessories so you can start work immediately. From adapters to a moisture indicator, Luney added practical items that support diagnosis and safe refrigerant handling in the field.

• Sturdy carrying box for organized transport and storage
• Moisture indicator to help spot contamination in the system
• 1/4" to 1/2" Acme adapter and both piercing and self-sealing can taps
• Complete instruction manual to guide setup and safe operation

Who is this for: The Luney 3-way AC manifold gauge set suits professional mechanics, HVAC technicians, and experienced DIYers who service automotive A/C, residential air conditioners, or small commercial refrigeration. If you need a portable, versatile gauge set with reinforced hoses, reliable brass fittings, and the accessories to diagnose and recharge common refrigerants, this kit provides the tools to perform those tasks efficiently and safely.