Air leak

[mechanix]

I have an air leak at the pressure safety valve on my air tanks. Does anyone know what pressure these are rated at? I am thinking I could get one for an air compressor and use it. I haven't dug through the manuals yet to see if it is in there.

 

[gimpyrobb]

Should be about 140ish. You want it to hold 120psi anyway. Have you hooked a gauge to the tanks to make sure you are not getting too much pressure?

 

[m16ty]

They are standard air pressure relief valves. Can be bought at any truck shop (NAPA).

Like Gimpy said, you need to check your pressure to make sure is within spec (120psi) before you replace the valve.

 

[mechanix]

No I haven't. It leaks all of the time. It will bleed off allof the air pressure in about 15 minutes. I can get one for an air compressor that is rated for 125. I would think that should work. The manual just says not over 125 psi.

 

[m16ty]

125 is a little too close to the operating pressure. I'd look for one in the 140-150 range.

The valve is not ment to regulate operating pressure. It's a safety valve to keep the air system (mainly the tank) from exploding.

 

[mechanix]

Ooops. I meant not over 120 psi for the air system. Need to read these better before I post. I have looked and I can also find one set at 145 psi.

 

[m16ty]

The 145 will work fine.

 

[mechanix]

Sounds good. I already picked one up at the local Tractor Supply. Just have to figure out the easiest way to get to it. Looks like it will be dropping the spare.

 

[Floridianson]

I would just take it out and clean and just tighten up on the adjuter to what you want. You don't need to replace.
Or just tighten it down a little while in place.

 

[mechanix]

I replaced it tonight and put ion two remote drain valves while I was at it. The old one is maked 150 psi. Just figured it would be better to replace. Hard to tell how old it is or how worn the spring has gotten.