How Does an Air Compressor Tank's Check Valve Work?

Written by amy rodriguez
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How Does an Air Compressor Tank's Check Valve Work?
Tools are easily powered by an air compressor. (Jupiterimages/ Images)

Air compressors serve workshops and home hobbyists with their powerful motors. Various parts comprise the air compressor, including the imperative check valve. Without this part, the compressor would not function.


An air compressor uses the surrounding air to fill its tank, and is subsequently pressurised. That pressurised air then pipes to power pneumatic tools, allowing the tools to work for a longer lifespan and be lighter in assembly.


The check valve on an air compressor allows air inside the storage tank. As a one-way valve, the compressor's pump pulls air in through the check valve to become pressurised. The air that moves through the valve creates a back flow pressure against the check valve. As a result, this closes the valve and effectively seals it from leaking air.


Over time, check valves can end up leaking. Before considering replacement, try cleaning it with soapy water to release any built up debris hindering the valve's functioning. If cleaning does not help, it will require replacement.

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