Manifold Gauge Set for R744 Carbon Dioxide Air Conditioning

A manifold gauge set for R744 CO2 air conditioning systems, used for checking both high and low side pressures during servicing and fault finding. Built for carbon dioxide refrigerant applications, it features clear PSI/MPa readings and an R744 temperature scale on the gauge face for straightforward pressure checks.

Used by technicians and engineers working on newer air conditioning systems that run on R744, this set suits diagnostic work, routine servicing and pressure testing. It can be used when connecting to service devices, checking system condition, or tracing faults where accurate high and low pressure readings are needed. For vehicle air conditioning maintenance or specialist workshop use, having a gauge set made specifically for CO2 refrigerant helps avoid using the wrong equipment on the job.

The valve block includes shut-off valves for both pressure sides, while the free floating piston valve helps reduce wear compared with a standard twisting piston design. Double O-rings help improve sealing, and the steel braided CO2 hoses are better suited to repeated servicing work. Supplied with a high pressure hose, low pressure hose and connecting hose to a service device, the set also includes a retaining hook for easier positioning while working. Everything is packed in an aluminium carrying case to keep parts together between jobs, which is useful for regular maintenance and transport.

Manifold gauge set specifications

• Application: For measuring high and low pressure on air conditioning systems using R744 carbon dioxide refrigerant.
• Gauge details: Class 1.0, 70mm gauges with PSI/MPa units and an R744 temperature scale on the dial.
• Valve design: Free floating piston valve with shut-off valves on both high and low pressure sides.
• Contents: Includes high pressure hose, low pressure hose and connecting hose to service device.
• Connections: 1/4" SAE with G1/4-19 thread connection details listed, supplied in an aluminium carrying case.

A practical choice for servicing and diagnosing R744 air conditioning systems.