Universal R22, R404A, R410A, R12 Refrigerant Compatibility with ±1% Measurement Accuracy

This 4 way AC manifold gauge set works with R22, R404A, R410A, and R12, making it suitable for home AC systems, industrial refrigeration, and older units. With precision calibration screws that maintain accuracy even after transport and repeated use, the dual-scale gauges offer ±1% measurement accuracy. Color-coded high- and low-pressure dials make readings easier to understand at a glance, and Fahrenheit temperature scales allow direct connection between pressure and temperature.

The unique sight window design lets you see the flow of refrigerant and check charge levels in real time during testing. Classic R12 systems, standard R22 home units, high-pressure R410A uses, and industrial R404A refrigeration equipment are all compatible within this range. 

Independent 4-Valve Control System with Precision Flow Management

The advanced manifold design lets you control the high-side, low-side, vacuum port, and refrigerant valves separately for better control during complex diagnostics. This design enables accurate isolation, staged evacuation, and charging. It also makes diagnostics more accurate than standard three-valve setups for home and business AC systems. Each valve operates independently to keep each line under control and prevent cross-flow during service.

The small metal valve body, measuring 8.7 x 7.9 x 2.3 inches (220 x 200 x 59.5 mm), maintains stability under pressure changes, and its shock-resistant design ensures it performs well in field service applications. With four valves, no extra valves are needed, and you can control the system precisely for home and business air conditioning needs.

Professional 5-Foot Heavy-Duty Rubber Hoses with 800-4000 PSI Rating

The 4 way AC manifold gauge set includes four heavy-duty rubber hoses, each 5 feet (1.5 m) long and color-coded for easy use and rated for 800 PSI working pressure with 4000 PSI burst strength. The strong rubber design can withstand high pressure while remaining flexible in cold temperatures. Brass joints and gasketed fittings help prevent leaks and loose connections during service work.

The extra-long 5-foot length lets you reach car, home, and business equipment without using extension hoses, and the color-coding helps prevent mistakes during complex diagnostic procedures. Each hose features a knurled fitting that keeps connections secure even when pressure changes or vibration occurs, which is common in service settings.

Dual-Scale Gauge Design for Direct Temperature-Pressure Readings

For quick system evaluation, both the high- and low-pressure gauges feature dual-scale displays that show PSI pressure readings and the corresponding refrigerant temperatures. This eliminates the need to perform conversion calculations by hand and lets you estimate superheat and subcooling. Large gauge faces make them easy to see in a range of lighting conditions, and protected covers prevent damage during shipping.

Dry-gauge dial construction works better in the winter because it avoids the condensation problems that liquid-filled gauges experience when the temperature drops. The moisture indicator continuously monitors refrigerant conditions to detect contamination before it harms system performance.

Complete Professional Kit with 4 Way AC Manifold Gauge Set Integration

The kit includes four 1.5-meter pressure hoses, quick couplers for R134A connections, multiple adapters (1/4 SAE to 1/2 ACME, 1/4 to 5/16 SAE, and 5/16 to 1/4 SAE), a valve core wrench, a screwdriver, a hook, and a full gasket set. The blow-molded carrying case keeps them organized and protected during transport.

Professional-grade accessories keep you from having to buy extra tools and ensure they work with standard HVAC and automotive equipment. The included adapters support a wide range of connections. Quick couplers make it easy to connect to a vehicle's air conditioning system while keeping the system safe and leak-free during service.

Solid Brass Fittings and Aluminum Valve Body for Reliable Sealing

The solid brass fittings and aluminum valve body in the AC manifold gauge set make it strong and reliable for high-pressure applications. To ensure they last a long time, each part is tested by running it repeatedly in both workshop and on-site service settings. Brass fittings provide durable, leak-resistant connections that withstand high pressure. 

The total weight of only 4.5 pounds (2.05 kg) gives it a solid feel while remaining portable for mobile service use. As you move and use the manifold gauge set, the rubber cover protects it from bumps and scratches, helping extend service life in demanding conditions. Professional-level building standards make sure that products work reliably in cars, homes, and businesses.

Automotive and HVAC System Diagnostic Capabilities

This 4 way AC manifold gauge set lets you do full diagnostic testing on car air conditioners, home central air conditioners, industrial refrigeration equipment, and older cooling systems that use R12 refrigerant. By comparing pressure readings, technicians can quickly detect compressor issues, refrigerant leaks, system blockages, and charging levels.

Real-time pressure readings reveal issues that static testing may miss during system operation. Vacuum measurement helps verify proper evacuation, removing moisture and other contaminants before filling with refrigerant. Pressure decay testing helps detect leaks before they become serious issues that compromise the system's stability or cause the loss of all the refrigerant.

Enhanced Safety Features with 4 Way AC Manifold Gauge Set Protection Systems

Several safety features keep both the equipment and the technician safe during high-pressure refrigerant service. Over-pressurization can damage the gauge, but pressure relief protects it, and the solid brass construction eliminates the failure risks of aluminum or plastic fittings. 

The separate valve design prevents refrigerant leakage and allows service technicians to control pressure while working on the unit. Calibrated pressure ranges keep you safe from dangerous overpressure while still letting you measure what you need for current high-pressure refrigerants like R410A.