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Look for an air pressure switch - wide differential range

STV_Keith

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I'm looking for a pressure switch for the air compressor in my RV. The current one turns on at 65psi and off at 85psi, so it's running every few hours or more. I'd like to find something with a wider range, like 50-100 or 60-120 or something like that. Most of the ones I've seen that are used by the train horn or low rider scene are 110-140, 150-175, etc, but nothing with a wide differential range. Does anyone have a source? This would be for a 12V DC compressor. It will run a relay, so no real power requirement, just open/close a contact.

I did find this one which looks sweet, but it's $150 + a $10 cable to connect to it + shipping. It would do the job, but wondering if anyone is familiar with something less pricey out there.

https://www.automation24.com/electronic-pressure-switch-ifm-efector-pk6224
 

Dcb.blake

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I used an 85-110psi. I think it was an autometer oil psi sensor switch what’s weird to me that it was even a thing but anyways. Harder than I thought to find. Everything I found was all ac. The range was 80-110 I believe. I think it was an auto meter brand. Worked well for my airbag setup. Always had air in the tank. Just a pita if you develop leaks. Burnt the compressor over a weekend. When a line burst, live and learn
 

Dcb.blake

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Just found it actually no part number though
99275F72-82A2-40E1-B0F6-FC666B4E4F33.jpeg
don’t use tbt plastic quick connects like in the pic. They suck use the brass quick connects
 
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