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Spunding Valve (With Gauge) - Ball Lock

Spunding Valve (With Gauge) - Ball Lock

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A Spunding Valve is used to adjust and release pressure on a pressure capable fermenter, such as a Unitank.  It can  also be used to release pressure from a keg while filling or filtering. The relief valve can be adjusted to release pressure from 0-15 psi.

Caution: This Spunding Valve should never be used as the primary safety pressure relief device.  Every vessel that is under pressure should have a primary safety relief valve set in accordance with the pressure rating of the vessel. This Spunding valve should only act as a seondary relief that also allows you to adjust the pressure within the safety limits of the vessel or tank. 

How to Adjust: The pressure relief valve is adjusted by unscrewing the very end which reduces pressure on the spring. If tight, and not adjustable by hand, it needs to be loosened with pliers. Wrap a towel around the end piece of the pressure relief valve (about  the last 1/4 in) and loosen with pliers. Then finger tighten or loosen to your desired pressure.

Gauge reads 0 - 15 psi
California Recipients: See Proposition 65 Information
Item # FIL42A
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.58LBS
Community Q&A

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Why did you choose this?
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For lagering under pressure
Adrian L F on Jan 4, 2019
for natural carbonation
Michael N on Nov 17, 2018
For lagering under pressure
Adrian L F on Jan 4, 2019
Madera A on Dec 11, 2018
for natural carbonation
Michael N on Nov 17, 2018
So excited for pressurized ferments! Interested to see how it differs
Anders H on Sep 2, 2018
High pressure fermenting & transferring from primary keg to keg
Bryan B on Mar 1, 2018
Auto carb beer during fermentation
William G on Feb 5, 2018
I recently bought the fermentasaurus and I’m going to Ferment under pressure so I need this release valve to do so
Matthew on Jan 29, 2018
Price, delivery time, availability
Jerry H on Jan 23, 2018
to use with fermentasaurus
Benjamin S on Jan 15, 2018
Madera A on Dec 11, 2018
So excited for pressurized ferments! Interested to see how it differs
Anders H on Sep 2, 2018

3.6 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
To spund or not to spund
This thing is great i have been spunding like crazy since i got it.
December 2, 2018
1 month ago
Works great after I tightened one side, it was leaking.
November 6, 2018
2 months ago
Leaked and not sure I liked the guage.
It leaked in several places. I disassembled and re-wrapped with plumbers tape and reassembled. Since I was using this post fermentation to allow my cask conditioning yeast to reach a certain level of carbonation, I changed the guage as well. All in all I’m very pleased and excited about another area of homebrewing that I am exploring
September 26, 2018
4 months ago
Spunding Valve
It leaks at about 8PSI and after calling about the problem nobody has called me back like they said they would, I've bought 2 others from other companies and they did not work either.
August 29, 2018
5 months ago
Cool! Presssurized primary fermentatrion!
Took ~ 30 min to reach 3 psi after replacing blowoff hose with spulding valve 48 hrs into preimary fermentation.
First pressurized primary fermentation. ~ 30 min to reach 3 psi after replacing blowoff hose 48 hrs.
User submitted image
March 13, 2018
10 months ago
Broken when I got it.
The pressure gauge was mid Ali rated when I opened it, shows 2 PSI when there is no pressure at all.

Valve should have a bigger knob to mark targeted pressure settings
February 21, 2018
1 year ago
I would say this is an important piece of equipment to have.
February 8, 2018
1 year ago
Does what it's supposed to do
I read the above reviews and acted on faith in MoreBeer and bought it any way. Turns out it works very well and does what it is supposed to do. It can be a bit tricky to get the setting right, but once you do, it's fine.
September 15, 2017
Both leak
I bought two of these and put them on a keg to check them for leaks. Good thing I did because both leak. I only started messing with one and the whole assembly was loose, so I tightened it all up. However, the pressure release valve at the end is now leaking. Have yet to look into the second one yet.
March 26, 2017