This heavy-duty pressure switch helps regulate when an air compressor starts and stops by controlling pressure between roughly 100 PSI and 135 PSI. Built with a four-port design and a convenient unloader valve, it replaces a worn or faulty switch that may cause the compressor to run inconsistently, leak air, or fail to shut off properly. Designed for select compressor models, it offers a reliable, easy-to-install solution for restoring safe, consistent pressure control.
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★★★★★
★★★★★
Easy install. Shuts off automatically
The right part for my compressor. Now it automatically shuts off when it reaches its capacity.
Guest - May 20, 2019
Verified Purchase
★★★★★
★★★★★
Worked great
Received in good condition.
Guest - November 24, 2021
Verified Purchase
★★★★★
★★★★★
Install instructions incomplete
Removal of old one followed the instructions given on RP webpage, but install instructions were largely absent. New one was different from old regarding the plastic tube, which must be cut off and the new fitting pressed onto it. No clue in the missing installation instructions. I finally figured it out but many people wouldnt. Compressor working again now.
Guest - September 6, 2019
Verified Purchase
★★★★★
★★★★★
wrong part
This is more a review of the person at Campbell Hausfeld, who, even after being provided the model and serial number of the compressor, gave me the WRONG part number to order. I called back, explained what happened (compressor wouldn't shut off and kept blowing out the safety valve), and this person (different), with THE SAME INFORMATION, ordered the correct part for me. Which is not the switch above.
Ask for Marcia at C-H. She knows her stuff!
Guest - November 1, 2019
Verified Purchase
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Make sure the reason for the problem is the pressure switch. If so, get the right pressure switch for the repair and not a universal pressure switch. It helped me to cut off a small amount of the air hose to provide a good surface for the quick connect fitting to bit into. Make sure you look at the load/line demarcations for the wiring.
... Read moreThey were different from the switch I replaced. If you get them backwards they will blow the breaker. The load/line are embossed on the housing of the wiring block. Put on your glasses. Once installed the pressure switch worked as I expected and saved buying an new compressor. I will be using e-replacement parts again.
V. C.
Removed faulty pressure switch. Replaced with new switch. rather simple repair if you watch how you removed original switch. Then removed the safety valve and installed the new one. Then replace the faulty pressure gauge.
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Pressure switch was bad, threads were stripped out on bottom, didn\'t work right.
I bought this compressor at an auction sale. They said it worked ok. When I got it home and plugged it in, air was leaking from the threads underneath the pressure switch. I took it apart and tried to fix it but it didn\'t work. Ordered the new one and got it within the week. It didn\'t come with instructions so I installed it the same wa
... Read morey that the old one was hooked up to the electric connections. Blew a breaker when I plugged it in. Frustrating but double checked the connections with a picture of the original. Same thing, blew a breaker again. Finally realized the lines for power and the motor lines hooked up horizontal instead of vertically like the old switch. Working fine now.
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The compressor would not automatically shut off when it reached proper psi
Tim from Temecula, California
2 of 2 peoplefound this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Screw drivers, Wrench (Adjustable), Wrench set
Unplugged the compressor
Disassembled the pressure switch and piping
Reassembled the new switch and valve
Reinstalled the wiring
Plugged unit in and turned on
Detached the power wires from the old pressure switch, and all the parts that are not included with the new switch.
Removed the old pressure switch.
Installed the new pressure switch and the parts removed from the old one.
Reconnected the power wires.
Plugged the compressor into the outlet.
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Pressure switch failed
Jory from Maricopa, Arizona
1 personfound this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers, Wrench (Adjustable), Wrench set
Removed the parts from the old pressure switch that don\'t come with the new one
Open the cover and made a wiring diagram of the cord and motor leads
Remove the old pressure switch
Install the new one
Install the wires in the new one and all of the other parts
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pressure switch quit working, when removed it came apart in my hand
Removed the old switch wiring and bleed off airline, unscrewed old switch from compressor,
removed the pressure gauge, regulator, air hook up from old pressure switch.
Put thread sealant and screwed new switch on. put gauge, regulator and air hook up on. re attached wiring and bleed line.
Plugged in and ran compressor
1 removed old pressure switch
2 removed pressure gauge from old switch and instlled on new
3 removed pop off valve from old switch and installed on new
4 screwed new pressure switch into position
5 pushed existing pressure line into receptacle on new switch
Done
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Pressure switch unloaded valve failed and compressor would not come on.
Replaced the switch which requires removing the old one and transferring several parts off the old one onto the new one. Works great. Slightly different from the original but is better designed.
Exactly as the factory part it replaced. You do have to take the old fittings off and place on the new switch but that was super easy. Really an easy fix and works like a charm.
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Stock Status
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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_WW_1.gif "Part Location Diagram of CW209000AV Campbell Hausfeld Pressure Switch")
