CO2 Check Valve

Johnny Reefer · #1 01-08-2009, 02:59 PM

I will soon be setting up a Ca reactor. The instruction manual highly recommends installing a check valve for the CO2 line. Any old air check valve is not recommended. The reactor did not come with a CO2 check valve.

I'm not having much luck finding this available in Canada. I'm looking to get one of these...
http://www.marinedepot.com/ps_ViewIt...ry~FICOCV.html

I've never ordered anything online from the States before and am reluctant to do so based on horror stories I've heard on massive shipping and/or duty charges.

Does anyone know where I can get a CO2 check valve in Canada?

Has anyone (from Canada) ordered from "Marine Depot" before? (I'm thinking someone must have). How did it go?

BTW, I hope this is an appropriate post as it appears to me that no sponsors of this site carry what I'm looking for. Therefore, I do not consider this stepping on anyones toes?

Thanx much,

fencer · #2 01-08-2009, 03:12 PM

I don't think there is a special check valve. The reason for the check valve is to stop water from wrecking your soleniod. Mine looks like a simple diaphram...actually looks like an aquarium pump check valve. If you really want to get fancy you can buy a spring loaded check valve for 20 bucks or so. If you do, make sure it can lift off with a couple pounds of pressure( even 1 psi )

christyf5 · #3 01-08-2009, 03:15 PM

Would this work?

http://oceanaquatics.com/store/produ...lve---Airline/

fencer · #4 01-08-2009, 03:27 PM

Mine looks very similiar

fkshiu · #5 01-08-2009, 03:40 PM

Brass check valves are a lot more reliable. That's the type recommended for CO2 applications. You can get them at Princess Auto, welding supply stores and hydraulic suppliers.

Tom R · #6 01-08-2009, 03:51 PM

Quote:

Originally Posted by christyf5

Would this work?

http://oceanaquatics.com/store/produ...lve---Airline/

This is the one I am using and I have never had a problem.

Tom R

Delphinus · #7 01-08-2009, 04:13 PM

I wouldn't use a brass check valve in a saltwater application.

Dennerle makes a CO2 check valve made of plastic. It doesn't seem to be listed on the Ocean Aquatics website but that's where I got mine. Call Wendell and ask for one.

It looks like this:
http://www.aquacave.com/dennerle-hig...alve-1581.html

fencer · #8 01-08-2009, 04:35 PM

I am not sure why that( the Dennerle) should be called a CO2 check valve. In other words how is it different.