[brewthru]

Which way does the check valve work? For example, take the following

https://www.morebeer.com/products/shutoff-valve-14-mpt-mfl.html

Does the check valve work from the barb end to the other end (in other words prevents anything from flowing towards the barb).

Or, does the check valve work from the other end to the barb end (in other words prevents anything from flowing towards the end furthest away from the barb).

I ask as I recently had some slight beer in my spunding valve and I'm thinking of using a check valve to prevent from happening again.

Thanks.

[Wilbur]

This is intended to be used with a regulator or manifold, where the "out" would be the flare fitting. It would prevent flow going from the flare fitting towards the mnpt fitting.

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[Bob357]

Using a check valve to prevent flow into your spunding valve would defeat its purpose. Flow through the spunding valve releases excessive CO2. That's how it controls pressure.

[brewthru]

Using a check valve to prevent flow into your spunding valve would defeat its purpose. Flow through the spunding valve releases excessive CO2. That's how it controls pressure.

D'oh! That's true.

Have others gotten a small amount of beer in the spunding valve? Could this have happened when I removed the spunding valve from the keg?

[Wilbur]

I have gotten some beer in my spunding valve, but I just use it to fill kegs. Forgot to actually be helpful in my last reply, but this device will probably keep the beer out of your spunding valve. I've only used it when filling kegs, but the ball should float up if you have enough liquid rising during fermentation. The other option would be something like fermcap or one of the knockoffs. They're supposed to prevent foaming in the fermenter without impacting beer foam. The third option would be to leave more headspace in your keg, but you probably don't want that.

https://www.morebeer.com/products/duotight-flow-stopper-automatic-keg-filler.html?gclid=CjwKCAiAmuKbBhA2EiwAxQnt7x1xtu0043heUv3DI-SGdGV7DnoW2dzcsDOJgCtTEUzLKlHjACWNmBoCsQYQAvD_BwE

https://www.morebeer.com/products/cellarscience-foam-axe-placeholder.html

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[KellerBrauer]

Which way does the check valve work? For example, take the following

https://www.morebeer.com/products/shutoff-valve-14-mpt-mfl.html

Does the check valve work from the barb end to the other end (in other words prevents anything from flowing towards the barb).

Or, does the check valve work from the other end to the barb end (in other words prevents anything from flowing towards the end furthest away from the barb).

I ask as I recently had some slight beer in my spunding valve and I'm thinking of using a check valve to prevent from happening again.

Thanks.

The valve to this link is actually not a check valve.  It is a ball valve.  While the description states “Includes a check valve…” the check valve is actually not shown in the illustration.  A good quality check valve will always have an arrow on the body of the valve indicating the direction of flow as shown in link below.

https://www.amazon.com/American-Valve-G31SL-Lead-Check/dp/B00QGX9LV4/ref=sr_1_4?crid=2VEOWI9ZLF85E&keywords=check+valve+3%2F4&qid=1668952744&sprefix=Check+valve%2Caps%2C91&sr=8-4

[brewthru]

Yes, good point about the arrow showing flow direction. That's why I wasn't sure about the link I posted.