This A/C Manifold Gauge Set is designed to test automotive air conditioning systems (using R134A Freon only) by comparing the "high side" and "low side" pressure reading to the vehicle manufacturer’s A/C system specifications. The high-pressure gauge measures compressor discharge pressure, and the low-pressure gauge measures suction. Set includes quick-disconnect valves, sight glass, high-pressure safety valve, color-coded gauges, valves and hoses.

• Blue low-side gauge: 2-1/2” diameter, 0-120 PSI, 0-40 VAC
• Blue hose: 1/4” FFL x 56" with knurled fittings and twist valve with quick disconnect
• Red high-side gauge: 2-1/2” diameter, 0-500 PSI
• Red hose: 1/4” FFL x 56" with knurled fittings and twist valve with quick disconnect
• Yellow charging hose: high pressure, 1/2” ACME x 56" with knurled fittings