Pressure Regulators

As the name suggests, these components allow us to reduce the downstream air pressure from a compressor to levels more suited to air tools or vehicle tires.  A pressure regulator consists of a body with inlet and outlet ports, a regulating knob or ‘T’ handle, and a spring-opposed diaphragm or piston that allows for setting a reduced pressure that is essentially independent of the inlet pressure.  More info on the operation is available here.  Regulators vary in size from 1/8” to 2.5” NPT as well and are usually positioned after a particulate filter so that debris does not impede the regulator operation.  Pipe size, maximum inlet pressure, reduced pressure range, flow and pressure droop are the main design criteria for selecting a regulator.
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