Saltwater safe 1/4" check valve (looking for)

[Dennis Cartier]

I am looking for a 1/4", saltwater safe check valve. Something like the Murloc ones, only saltwater safe. I have seen suggestions to use the Korallin brass ones, but those are intended for CO2, an again, I doubt they are saltwater safe. I can't find any info on the Korallin ones though.

So any sources for dependable saltwater safe check valves?

Dennis

 

[KrisReef]

I am looking for a 1/4", saltwater safe check valve. Something like the Murloc ones, only saltwater safe. I have seen suggestions to use the Korallin brass ones, but those are intended for CO2, an again, I doubt they are saltwater safe. I can't find any info on the Korallin ones though.

So any sources for dependable saltwater safe check valves?

Dennis

What application?
I looked for these awhile back but didn’t find anything I liked (everything had metal parts).

I did find these but not sure if they will work?

1/4" Polypropylene Standard Check Valve with Viton™ Diaphragm | U.S. Plastic Corp.

Polypropylene housing with Viton™ diaphragm. Will work with vacuum between 2" and 29" Hg and pressures from 1 psi up to 50 psi. Valve has...

www.usplastic.com

 

[vtecintegra]

Why is the murloc not saltwater safe?

 

[Shirak]

Don't use anything brass in contact with your salt water!

 

[Dennis Cartier]

Why is the murloc not saltwater safe?

I am guessing there is a metal spring inside. I used them previously (for years), but noticed that they do fail when used with saltwater. Then on the forum, it was pointed out that they are not saltwater safe. I can't remember if this was established, or from the manufacturer or just assumed.

Dennis

 

[Dennis Cartier]

What application?
I looked for these awhile back but didn’t find anything I liked (everything had metal parts).

I did find these but not sure if they will work?

1/4" Polypropylene Standard Check Valve with Viton™ Diaphragm | U.S. Plastic Corp.

Polypropylene housing with Viton™ diaphragm. Will work with vacuum between 2" and 29" Hg and pressures from 1 psi up to 50 psi. Valve has...

www.usplastic.com

Those look pretty decent KrisReef. I doubt they will have a spring in them. The cracking pressure is reasonably low as well. I may try them in 3/16 Kynar and see if they hold up to the effluent from my CalRx secondary stage. Thanks.

Dennis