Air Compressor Pressure Switch PS-A21
Product Description
Air compressor pressure Switch PS-A21
Air Compressor Pressure Switch PS-A21 is used to regulate the tank pressure between
two preset values(up to 175 psi) electrically driven air compressors. It is available with an
unloading valve, which prevents compressors from starting while overloading, and it is
available with an On-Off knob for manual cut off the compressor. The design allows the
unloading valve to be rotated into eight different positions.
Four ports connection makes it easy to connect with safety valve and pressure gauges.
| Model |
PS-A21 |
| Rated Voltage / Frequency |
240V/50Hz; 120V/60Hz |
| Rated Current / Power |
17A/3HP; 20A/1.5HP |
| Max. Pressure |
175PSI |
| Min. Pressure |
20PSI |
| General Pressure Setting |
90-125PSI |
| Inlet Base |
One way or four way |
| Inlet Connection Thread |
NPT1/4’ |
G1/4 (BSP 1/4) Male or Female pipe fitting are available.
Conversion: 1Kgf/cm2 = 14.2PSI , 1bar = 14.5PSI
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