2

Is there such thing as a spunding valve for a demijohn or swing-top bottle?

I want to make elderflower champagne for the second time. Last year it was fermented in plastic bottles, and one of them exploded. I figured there must be some sort of equivalent of an airlock that releases above a certain pressure, and thus I discovered that spunding valves are a thing.

However, it seems that spunding valves are made only for kegs, and specialised pressurised fermentation vessles.

Does such a thing exist for glass swing-top bottles or demijohns? Is this a silly question, and am I missing a reason why this would be non-sensical?

Apologies if this is daft. I'm totally new to this, having made elderflower champagne once before, and nettle 'beer' a few weeks ago.

1 Answer 1

1

I've never seen an off-the-shelf glass/plastic bottle with a variable pressure release (spunding valve..that's a new one to me!) I could be wrong, there's all kinds of neato gadgets these days. I think you'd have a hard time getting anything to attach to a swing top bottle that isn't the swing top.

I think you could do it though..but not in a swingtop. You could build your own spunding valve (there's some DIY guides online) or there are some distributors (in the US at least) that are selling something that would act as a spunding valve with a valve release off a ball-valve gas input. You could potentially use one with a ball-valve carbonation cap that screws onto 2 liter bottles (they make these and they're ~$10 USD). That should work in theory...but I've certainly never tried anything similar.

Also, it's really not a silly question. There's a lot of people that just want to make really simple and sweeter fermented sparkling beverages and being able to do something like this on a 2 liter would certainly be novel.

It would certainly be easier to do this with stainless steel kegs but that can be cost/space prohibitive.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.