Wisscool HVAC Manifold Gauge Set 3‑Valve for R134a/R22/R12/R502 — Brass Manifold, Dual Gauges

The WISSCOOL HVAC Manifold Gauge Set is a complete three-valve service kit designed for accurate pressure measurement, charging, and evacuation of R134a, R22, R12 and R502 systems.

This kit bundles a rugged brass-and-aluminum manifold with two precision °F gauges, a moisture sight glass, and three color-coded 5 ft hoses so you can test, evacuate, and charge automotive and light commercial AC systems. Built components and accessories cover common connections and routine maintenance tasks for technicians and competent DIYers, while calibration screws and readable dials help ensure reliable pressure readings on-site.

How precise are the gauges for professional troubleshooting?

The WISSCOOL set includes two analog gauges calibrated for temperature-correlated pressure readings and adjustable calibration screws to fine-tune accuracy. The low-side dial reads 0–350 PSI and the high-side reads 0–450 PSI, with a stated accuracy near 1.6% for dependable diagnostics.

• Low-side gauge: 0–350 PSI for suction and low-pressure checks
• High-side gauge: 0–450 PSI for discharge and high-pressure verification
• Calibration screws: allow field adjustments to maintain accuracy
• Easy-read °F scale: simplifies refrigerant temperature correlation

What connections and accessories are included for common service jobs?

The kit arrives with three 5 ft hoses—red, blue, and yellow—equipped with adjustable R134a couplers and heavy-duty fittings. Also included are self-sealing and piercing can taps, a valve core key, adapter, pipe thimble, and spare seals to help you handle charging, can tapping, and quick repairs without running back to the parts bin.

• Three 5 ft PVC hoses rated to 600 PSI working pressure
• Self-sealing and piercing can taps for refrigerant cylinder hookups
• Valve core key and spare seals for maintenance and leak prevention
• Adapter and thimble for varied service connections and fittings

How durable and safe is the manifold set during heavy use?

Construction combines brass, aluminum, ABS, and rubber for corrosion resistance and mechanical robustness during routine shop or field work. Hoses are reinforced with a three-layer design rated for high burst pressures, and the kit includes a moisture sight glass to visually monitor refrigerant condition as you charge or evacuate.

• Brass and aluminum manifold for corrosion resistance
• Reinforced three-layer hoses with 3000 PSI burst rating
• Built-in sight glass and moisture indicator for refrigerant clarity
• ABS knobs and rubber seals for reliable valve operation

Is this set easy for a competent DIYer to use?

The WISSCOOL manifold is designed with user-friendly features like clearly color-coded hoses, adjustable couplers, and readable gauges so technicians and experienced DIYers can perform pressure testing, evacuation, and refrigerant charging with confidence. The included instructions outline basic procedures; however, proper safety precautions and refrigerant-handling knowledge are essential.

• Color-coded hoses reduce hookup mistakes (red/blue/yellow)
• Sight glass lets you confirm refrigerant flow during charging
• Instruction sheet guides pressure testing, evacuation, and charging
• Replaceable seals and accessory tools support maintenance

Who this is for: This WISSCOOL manifold gauge set fits HVAC technicians, mobile service professionals, and competent DIYers who work on automotive and small commercial refrigeration systems using R134a, R22, R12, or R502. It’s appropriate for users who need a portable, durable kit with reliable gauges, thorough accessory coverage, and visual refrigerant monitoring—provided they follow safe refrigerant practices and local regulations.