AC-0789 Pressure Switch for air compressor
AC-0789 Pressure Switch for air compressor wiring diagram for 4 port pressure switch made for air compressors Pressure inlet for the AC-0789 replacement pressure switch On/off switch on an air compressor pressure switch AC-0789 Porter Cable replacement 4 port pressure switch

AC-0789 Pressure Switch 4 Port 145 PSI On 175 PSI Off Red Lever

In stock
Part Number
AC-0789
$54.98
Part Number: AC-0789
Brand: DeVilbiss Air Compressor and Equipment
Shipping Weight: 1 Lbs

The AC-0749 Pressure Switch is a 4-port, 24-amp, 120V/240V two-pole switch that controls your air compressors’ on-off operation and a preset pressure rating.

This Pressure Switch is a OEM quality replacement pressure switch with a cut-in pressure of 145 PSI and a cut-out pressure of 175 PSI and was used on multiple brands of portable air compressors, including:


  • Sears Craftsman
  • DeWalt
  • Porter Cable
  • Speedaire
  • WW Grainger
  • Black and Decker
  • Rand 4000 and others.


The AC-0749 4 Port Pressure Switch is a replacement pressure switch for the following air compressor model numbers and others:


  • CPFC2TV3525VP Type 1 Porter Cable Oil Free Twin Cylinder Air Compressor.
  • CPFC2TV3525VP Type 2 Porter Cable Oil Free Twin Cylinder Air Compressor.


  • Sears Craftsman 919-167710 Portable Oil Free Twin Cylinder Air Compressor.
  • Sears Craftsman 919-167780 Portable Oil Free Twin Cylinder Air Compressor.

  • Speedaire 1WC95-0 Portable Oil Free Twin Cylinder Air Compressor from Grainger


The features of the AC-0749 On/Off Pressure switch are as follows:

  • OEM Quality Replacement ON Off Pressure Switch.
  • PreSet Pressure Switch 145/175 PSI Adjustable.
  • 4 Port Manifold.
  • 1/4”-18  Female FPT Standard Ports.
  • Cuts in at 145 PSI and out at 175 PSI.
  • Includes Hardware.
  • 24 AMP 120V or 240V Applications.
  • Red Lever On/Off Switch Actuator.
  • Multi-position unloader valve that can be rotated into 8 Positions.

The AC-0749 pressure switch has a pressure setting that is adjustable from 145 to 175 PSI; please take a look at the instructions for adjustments.


If you are unsure what pressure switch you need, please contact us with your model number by email, chat, or text, and we will be happy to help.


Need Help? Call us:

1-269-685-4123

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