Is there a pressure valve or gauge that self adjusts to maintain 95PSI?? I am tired of having to adjust the valve for my CF when the temp changes.

There are lots of pressure regulators for different applications.

It is not clear to me how you are setting your pressure. Do you manually adjust a gate valve?

A well pump regulator should be able to be set to about 95 PSI. Turns the pump on when it drops below a certain pressure, off when it reaches the other set pressure.

An air compressor regulator works about the same.

The problem might be the different environments that the regulators are designed for (air/water). I assume you could get some kind of a diaphragm protection for it. Or, make sure it always maintains an air bubble.

I'm not sure how you are adjusting your pressure. Most the well & air compressors require some kind of a pressure tank/buffer, with the newer water tanks having a compressible air jacket around the water to help buffer the pressure changes.

The other thing is that a pump runs better at steady-state, than when being turned off and on, especially at high pressures.

Another option might be to setup some kind of a pressure relief valve. Somewhat like you might find on a Hot Water Heater. The one on my HW heater says 150 PSI, 210 C. But, it may be adjustable, or you could find one with a lower set point. You could then just feed the overflow back into your raw oil tank. Thus, not have to worry about the pump being turned on and off, and really not need a very large pressure buffer tank.

Look at this company for pressure relief valves.

http://www.aquatrol.com/
http://www.aquatrol.com/Aquatrol_2006.pdf

Redundancy is never a bad idea. Say you are using one valve set at 95 PSI for a pressure feedback loop... perhaps put in a second valve at 120 PSI or so with a system shutdown.

Checking out the Auquatrol catalog, I use a bronze pressure regulating valve like the Series 69. Here's what McMaster Carr has along these lines... check out their part number 4612K18. You can also get them for a little less money from a pressure washer or industrial chemical supply such as Dultmeier.

Don't make the same mistake I made a while back by buying a 'throttling valve' rather than a pressure regulating valve. A throttling valve is just a fancy gate valve... set it and forget it. But, as our oil changes temp, so does the pressure.

A pressure regulating valve will have a spring-loaded opening to maintain a specific pressure, regardless of flow.

I've seen them for as little as $16/each.

This is what I have.


http://www.grainger.com/Grainger/items/6D915

Was less than that when I got it but $6.19 aint bad.

Most cars have a bypass valve in the lubrication system in case the filter gets blocked.

Also some petrol injection motors use a bypass valve to regulate the fuel pressure.

The one I have is off an old triumph and is adjustable.

This could work.

http://www.agrisupply.com/pres.../p/22740/cn/4200004/