Wisscool 3-Valve HVAC Manifold Gauge Set for R134a/R22/R404A — 5 ft Color-Coded Hoses, 1.6% Accuracy

WISSCOOL's 3-valve HVAC manifold gauge set is a complete, professional-grade kit for diagnosing, evacuating, and charging R134a, R22 and R404A air conditioning systems.

This compact, durable manifold assembly gives HVAC technicians and DIYers the tools needed to read high and low pressures, connect service hoses, and transfer refrigerant safely. Built with three 5-foot color-coded hoses, shock-resistant gauges, and multiple adapters, the kit is sized for automotive and light commercial AC work where accuracy and flexibility matter.

How accurate and durable are the WISSCOOL gauges?

The two pressure gauges deliver clear, easy-to-read °F dials with 1.6% accuracy and user-accessible calibration screws. Each gauge is housed in a shock-resistant casing to withstand workshop knocks while preserving consistent readings over repeated use.

• Low-side range: 0–350 PSI; high-side range: 0–550 PSI
• 1.6% certified accuracy with calibration adjustment
• 2.6" shock-resistant gauge housings for impact protection

What connections and hoses are included for service work?

The set contains three color-coded 5 ft hoses—red for high-side, blue for low-side, and yellow for charging—each rated for 500 PSI working pressure and 2500 PSI burst pressure. Included adapters and couplers let you hook to common service ports and refrigerant cans without searching for extra fittings.

• Three 5 ft hoses, color-coded and high-pressure rated
• Two adjustable 1/4" quick coupler adapters for fast hookups
• Piercing can tap and flat piston can tap for refrigerant cans
• 1/4" to 5/16" angled and straight adapters for varied fittings

How does this manifold support charging, evacuation, and pressure testing?

The three-valve configuration gives independent control of high, low and service/charge ports so you can isolate lines during evacuation, measure static pressures, or introduce refrigerant precisely. The yellow charging hose combined with the can taps and adapters makes topping up or controlled charging straightforward for common refrigerants.

• Three-valve control for isolation during evacuation or charging
• Yellow center hose dedicated to charging and recovery connections
• Adapters and taps included to attach to disposable refrigerant cans

What safety and practical features should I expect while using it?

The WISSCOOL kit emphasizes workplace safety and convenience: hoses are rated to high burst pressures, gauges are protected in impact-resistant cases, and the quick couplers speed secure connections. Compact layout and color coding reduce the chance of cross-connection errors during service.

• 500 PSI working pressure; 2500 PSI burst rating on hoses
• Color-coded hoses to prevent high/low mix-ups
• Durable fittings and quick couplers for secure sealing

Who is this for: The WISSCOOL 3-valve manifold gauge set is aimed at automotive technicians, HVAC contractors, and skilled DIYers who service R134a, R22 or R404A systems and need a reliable, all-in-one kit. It suits routine diagnostics, evacuations, and controlled charging tasks where accuracy, versatile adapters, and durable construction are required.