check valve

I just installed a DIY Griggs reactor on my Fluval 406 filter. It's 25" long with 2" PVC pipe. The CO2 is fed from an aquateck regulator with a brass check valve right after the needle valve and the glass bubble counter just before the reactor. See pics here...

I am making my first foray into pressurized co2. I believe I have all the parts and I am about to start assemble my setup, but I am still unsure as to where exactly I shouldn't place my check valve(s). I have an inline bubble counter to install, and I built a pvc reactor after getting ideas from...

MY SETUP : Dennerle Nano 10 liters---( co2 bomb - citric acid+baking soda) ---> (On/Of Solenoid +programmable socket)--->(glass check valve)--->(glass bubble counter)-->(co2 flow regulator)--->(ceramic diffuser). PROBLEM :So i made a schedule 1 hour before lights are on to start the co2 but...

Hi all, So, I've saved up the money for my pressurized CO2 system (Decided to go with GLA, hence the need to save...), but I have a question for anyone failiar with check valves on a CO2 setup, and, in particular the "Atomic CO2 Bubble Counter with Integrated Check Valve." As the name states...

Hey everybody! Longtime lurker. I've learned a ton from this site over the years, am about to go high tech -- but would appreciate your input on a couple pieces of CO2 equipment. I'm (slowly, slowly) putting together a CO2 rig, and right now I have the regulator (a single stage Smith - Medium...

I am doing the DIY CO2 method for my fish tank. This forum has been awesome, but I just have one question. I bought a check valve, one side says in the other says out. Am I correct that the "in" side should be closest to the Yeast bottle?

So I'm going to try and make one of those simple yeast/sugar CO2 reactors I've read about, but I'm confused as to where I can get a check valve? aquarium store or lowes maybe? what size should it be. My airline tubing looks to be one of the smaller sizes. Also if I run the line into my hob...

My CO2 flow won't start each day when the solenoid opens. The solenoid is fine, but I have to twist the needle valve way open to get it going, and then slowly close the needle valve thru the day to keep the flow from going crazy. It seems like there is a lot of back pressure at the start of...

I have a few Penn-Plax Brass Check Valves for sale. Brand new in the original packaging. $6 shipped via USPS first class mail for each valve. Let me know if you want to upgrade to Priority for an extra $5. Shipping will be 2 days a week when I get enough orders to warrant a drive to the...