Automotive AC Meter Gauge
An automotive AC manifold gauge set is a vital diagnostic tool used by technicians and DIY mechanics to monitor pressures, troubleshoot leaks, and safely recharge or evacuate a vehicle's air conditioning system
Description
An automotive AC meter gauge (commonly part of a manifold gauge set) is a diagnostic tool used to measure pressure, evacuate, and recharge a vehicle's air conditioning system
Core Features & Components
- Dual Pressure Dials: Features a low-pressure blue gauge (typically measuring from -30 inHg up to 250–350 PSI for suction/evaporator pressure) and a high-pressure red gauge (measuring up to 500–800 PSI for discharge/condenser pressure).
- Color-Coded Hoses: Includes durable, multi-layer hoses— blue for low side , red for high side , and yellow for the center charging/recovery port —rated for high working pressures (often up to 600 PSI working and 3,000 PSI burst pressure).
- Manifold Block & Control Valves: A central valve body (made of brass, aluminum, or durable alloy) equipped with manual shut-off knobs or ball valves to route refrigerant flow during evacuation or charging.]
- Sight Glass: A integrated viewing window on the manifold block that allows real-time visual monitoring of the liquid refrigerant's condition and flow during charging or recovery.
- Quick-Connect Couplers: Specialized high- and low-side service couplers designed to attach securely and exclusively to corresponding vehicle AC service ports without leaks.
- Calibration Screws: Built-in adjustment screws on the analog meter faces to reset needles back to zero, ensuring measurement accuracy.
- Refrigerant Compatibility Scales: Dial faces or digital profiles marked for common automotive refrigerants (such as R-134a, R-12, or modern alternatives)
Specification
| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| Specification Component | Low-Pressure Gauge (Blue) | High-Pressure Gauge (Red) | Center Manifold / Hoses |
| Gauge Type | Compound (Vacuum & Pressure) | High-Pressure (Pressure only) | 3-way flow control block |
| Pressure Range | -30 to 250 psi (-1 to 17.5 bar) | 0 to 500 psi (0 to 35 bar) | Up to 800 psi working (4000 psi burst) |
| Compatible Refrigerants | R-134a, R-12, R-22, R-1234yf | R-134a, R-12, R-22, R-1234yf | Standard manifold for gas charging/recovery |
| Dial Diameter | Standard 2.5" to 3" (68mm to 80mm) | Standard 2.5" to 3" (68mm to 80mm) | N/A |
| Accuracy Class | ±1.6% to ±2.5% (ANSI/ASME Grade B) | ±1.6% to ±2.5% (ANSI/ASME Grade B) | N/A |
| Hose Color & Connection | Blue (Low side service coupler) | Red (High side service coupler) | Yellow (Refrigerant tank/vacuum pump) |
Related Products
Automotive A/C leak detectors are electronic or specialized tools designed to quickly and accurately sense refrigerant gases or tracer elements escaping from a vehicle's air conditioning system.
A fully automatic car air conditioner (A/C) gas recovery and charging machine is a specialized workshop device that automates the entire loop of vehicle climate control maintenance.
A 150A automotive battery charger is a heavy-duty workshop tool designed to fast-charge 12V or 24V lead-acid, AGM, and gel batteries, as well as provide an emergency 150-amp engine jump-start for cars, trucks, and SUVs.