Nilight 3-Way A/C Manifold Gauge Set for R134a/R12/R22/R502 — Portable Case, Reinforced Hoses & Brass Body

The Nilight 3-way A/C manifold gauge set is a complete, portable tool kit for diagnosing, evacuating and charging automotive A/C systems that work with R134a, R12, R22 and R502 refrigerants.

This compact manifold assembly combines precision gauges, reinforced hoses and a rugged brass body inside a transport case so technicians and DIYers can perform pressure checks, vacuum draws and refrigerant top-ups safely and accurately. The set is assembled with service-ready fittings and adapters, and the color-coded layout simplifies connections under the hood.

How accurate and durable are the Nilight gauges?

The gauges are built with hardened shells and rubberized bumpers to resist slips and drops, and calibrations are adjustable to maintain reading accuracy. The low-side and high-side dials cover the typical pressure ranges for vehicle refrigerants and include a sight glass to monitor refrigerant flow during charging.

• Rubber-coated gauge casings for impact resistance and grip
• Adjustable calibration screws for ±1.6% accuracy
• High-side rated to 500 psi, low-side to 250 psi
• Integrated sight glass to view refrigerant passing during refill

What do the hoses and fittings offer for safe service work?

Three 5-foot PVC hoses are color-coded (blue low, red high, yellow service) and reinforced in multiple layers to handle common service pressures. Hose ends include anti-slip sealing gaskets and secure fittings to reduce leakage and keep refrigerant loss to a minimum while you connect, evacuate or charge.

• Five-foot reinforced PVC hoses to reach components under the hood
• Color coding for intuitive low/high/service connections
• Anti-slip sealing gaskets at hose interfaces for leak resistance
• Burst-rated construction for added safety and durability

What accessories come with the manifold set and how do they help?

The kit arrives with a storage box and a collection of service adapters and tools to handle most passenger vehicle A/C ports. Included items let you attach to can taps, convert thread sizes and access valve cores so you can perform common maintenance without buying additional parts.

• Storage case for organized transport and protection
• Two R134a adjustable adapters and a universal puncture can tap
• 1/4" to 1/2" adapter, valve core wrench and dual screwdriver
• Complete manual for step-by-step setup and operation

How does this kit fit into routine vehicle A/C maintenance?

The Nilight manifold set is intended for pressure diagnostics, vacuum evacuation and controlled refrigerant charging—tasks common during leak checks and system service. It helps you determine system health, remove air and moisture, and refill refrigerant to manufacturer specs when needed.

• Perform static and running pressure checks for troubleshooting
• Vacuum lines to evacuate moisture before charging
• Meter refrigerant into systems with the sight glass for visual confirmation
• Useful for both professional shops and knowledgeable DIYers

Who is this for? The Nilight 3-way manifold gauge set is made for automotive technicians, fleet maintenance crews and competent DIY mechanics who need a portable, reliable toolkit for A/C diagnostics and recharging. It’s not a substitute for professional training; users should follow refrigerant handling guidelines and local regulations when servicing air conditioning systems.