Asher

I need to install a anti drain back valve for my air horns, the compressor is allowing the tank to drain out over night and I want to place a one way valve to keep this from happening.

Where can I find a valve for this application??? (120 PSI range)

rustyshakelford

ball valve!

brett

ptgarcia

Got a link to one that would work? I could use one myself.

TonyB

Search http://www.mcmaster.com/ for "Spring Check valve" You'll go right to the page & see several sizes and types. Watch the temp range, if you are in a cold winter climate. I think most of what I saw on the middle of the first page should work for you.

HTH

Tony

cbrahs

home depot! cheap and local.

ptgarcia

Is Viton better than Buna-N?

ptgarcia

So, if I get one of these:

and two of these:

I should be good to go, right?




When I broke some of my exhaust brake fittings I tried the stuff from Home Depot and they don't fit the 1/4" Viair air line very well. I couldn't get them to seal. Finally had to get parts from Pacbrake. Must have wasted $20 of fittings. I won't be using them again!

Rough-n-Ready

All you need is one of these.
They are made by SMC, other manufacturers make similiar products and should be available from an industrial pneumatic supply house. I use these all the time in industrial applications.

This is a check valve built into a straight tubing coupler. All you need to do is cut the tubing and insert the ends of the tubing into each end of the valve. Simple.....

Rough-n-Ready

It depends on the application. Viton is a little more resistant to heat and chemicals than Buna-N, but it has a slightly higher durometer, means it is a little harder.

In regular sealing applications, Buna-n seals better, but if you need better chemical or heat resistance, better to go with Viton.

Rough-n-Ready

Try this for a link to a check valve that should work.

http://www1.mscdirect.com/CGI/NNSRIT...53784&PMT4NO=0