Professional tool for commercial or occasional use An air conditioning system test kit This manifold gauge set is designed to test automotive air conditioning systems using R134a refrigerant by comparing the high and low-pressure readings Used to test evacuate and fill automotive air conditioning systems Colour coding on gauge valves and hoses to ensure correct installation AC manifold gauge set Easy to read the readings and precise display Diagnostic and service gauge set for using on air conditioning systems Easy to use and to operate Rubber sheath to protect the pressure gauge from damage Built in ball valve which makes it easy to open and close Built in sight glass for viewing condition of refrigerant Quick connect fittings High pressure safety valve Gauges come with impact resistant lenses for maximum strength and durability Gauge accuracy + / - 2 percent SPECIFICATIONS • LOW PRESSURE - 0 - 120psi / 1 - 8.5 kg/cm • HIGH PRESSURE - 0 - 500psi / 0 - 35 kg/cm • Blue (low) gauge 0 - 120 psi • Blue Hose 1/4" inlet FFL x 50 in • Red Hose 1/4" inlet FFL x 50 in • Yellow hose - 1/2in Acme x 50 in APPLICATIONS • The red HP gauge is used to measure high-pressure compressor discharge side pressure • The blue LP gauge is used to measure low pressure side suction or pressure • The manifold valves control the flow of refrigerant to and from the yellow hose also called the charge hose • The coupler valves control the flow to the gauges from the red and blue hoses • The sight glass allows checking the appearance of the refrigerant • The yellow hose also called the hose can be used three ways (refrigerant recovery / evacuation / charging filling the system and for checking) • The charge valve allows for simultaneous connection of a refrigerant recovery system Comes in a blow molded case for easy storage and transportation