I have a small portable air tank that has a leaky shut-off valve. I found a replacement for it, but I am wondering if I can fix the old one somehow. Is that a replaceable o-ring that I see in the second picture? If, so, how would I put in a replacement?
Thanks for any help.
Joe, I made my own set up from a tank off a simi truck and used pipe fittings I had around. Used a gas shut off for the valve and it will hold air for months. Originally bought a kit with the valve like yours and it did'nt last till the water got hot. KB
If I am correct, the valve you show is also a safety pressure release. Do not eleminate this feature but replace it with the correct valve.
Yes, it is a combination safety valve, shut-off, and hose connection. It will replace the old, leaky one perfectly and keep the safety valve intact.
I am just wondering if it is even feasible to try to repair the old one...
Pull the circlip and the red knob and see what's under there. I'm guessing you'll find a pack nut.
Well, this is the valve taken apart:
The valve part just screwed on through, but the two o-rings are hard as a rock. I am hoping that some new ones will take care of things, not?
Any way to test the relief valve to see if its seal is all dried out, too? It looks like it might screw out, but how?
Looks like a valve stem for tube. Have you tried a core remover?
It is a special fit stem for this application.
I was able to get the old o-rings off quite easily; they just crumbled, being so old and dried out.
No wonder it leaked.
Now I need to find some replacements of correct size.
In the second to last pic, what's in the little hole that can be seen under the ring that's on the relief valve?
That's the "exhaust port" for the relief valve...