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
Item # FIL42A
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.58 LBS
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Pressurized fermentation.
MIKE MORGAN on Sep 18, 2020
For making cider in a keg.
Jay S on Aug 18, 2020
Pressurized fermentation.
MIKE MORGAN on Sep 18, 2020
fermenting under pressure
Francis J D on Aug 22, 2020
For making cider in a keg.
Jay S on Aug 18, 2020
Just getting into pressure fermenting.
Jeffrey V on Aug 8, 2020
Ships from USA and free shipping; reasonable price.
Vinton L on Jul 1, 2020
Quick Lagering. Also, it sounds like Sputnik
Casey Lee S on Jul 1, 2020
Co2 shortage is a comin'
Justin D on Jun 29, 2020
keg transfers and possibly primary fermentation in the keg
benjamin c l on Jun 19, 2020
Michael m on Apr 4, 2020
Old one leaks after repeated tightening
DIANN J on Mar 30, 2020
Pressure ferment
Steve l on Mar 27, 2020
Birthday gift
Kenneth T on Jan 23, 2020
To use on keg
Rick T on Jan 20, 2020
Need it to carb and ferment at the same rime
Ken H on Jan 4, 2020
Pressure transfer and carb under pressure
Mark N on Dec 9, 2019
Tired of manually purging Fermzilla
Alex Perkins on Dec 6, 2019
I want to see the pressure
Valued C on Dec 4, 2019
So I dont blow up my firmzilla.
William R on Nov 22, 2019
Low O2 fermenting and natural carbonation
Christopher G on Nov 14, 2019
To measure pressure in Fermentor
John F on Nov 11, 2019
Gonna try some pressure fermenting.
LIAM PATRICK M on Nov 7, 2019
new item
Darrell H on Nov 5, 2019
Please email me if this is not the right spunding valve for the fermzilla
Christopher N on Oct 19, 2019
To ferment under pressure
Steven W on Sep 14, 2019
Want to ferment under pressure
Roger Taylor on Sep 14, 2019
need it
Louie on Sep 7, 2019
to keep head pressure in pressure transfers from unitank to corney keg
David P on Jul 9, 2019
want to hop during fermentation
William H on Jul 3, 2019
To ferment in a corny keg
Chris D on May 21, 2019
Need to gauge my pressure accurately
Brendon M on May 20, 2019
Fermenting under pressure
John J on May 13, 2019
Um... I need a spunding valve.
Michael C on May 13, 2019
I'm very intrigued by pressurized fermentation and natural carbonation opportunities.
Steven S on Apr 30, 2019
Because i am hoping it will help me regulate pressure and not over pressurize my beer once I keg it
Chris G on Apr 19, 2019
For pressure fermenting
Richard S on Mar 12, 2019
Pressurized Fermentation
Jeffrey O. on Feb 20, 2019
lagers and natural carb
Richard W on Feb 5, 2019
starting to ferment under pressure with my fermentasaurus
David T on Jan 25, 2019
Son wants it
Angelica T on Jan 21, 2019
For lagering under pressure
Adrian L Febre 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 Burns 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 John Hernandez M on Jan 23, 2018
to use with fermentasaurus
Benjamin S on Jan 15, 2018
fermenting under pressure
Francis J D on Aug 22, 2020
Just getting into pressure fermenting.
Jeffrey V on Aug 8, 2020

3.9 / 5.0
14 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Pretty useless when the pressure dial face points down
User submitted image
User submitted image
User submitted image
September 15, 2020
1 month ago
Hardware store scavenger hunt
Not nearly as simple of a solution as the Kegland spunding valve assembly. This is a cobbled bunch of brass fittings with a simple spring valve at the end. The weight of the assembly stresses the seal of the ball lock connection. I'll give it points for being solid and easy to move from place to place, but I wouldn't replace my Kegland duotite setup for fermentation.
April 18, 2020
9 months ago
bought to presure ferment
works good, just a little tricky to get set at desired pressures.
February 15, 2020
9 months ago
Sounding valve for fermentation under pressure .
Works well holding around 8 psi . Would have been a five star if there were instructions on setting a pressure.
User submitted image
User submitted image
User submitted image
November 25, 2019
11 months ago
works fine
required tightening at all joint, which was really no trouble as I would check them as a rule anyway.
April 17, 2019
1 year ago
Sounding valve
Item worked great. I got much more aroma dry hopping under pressure and beer was carbonated in keg much sooner.
March 26, 2019
1 year ago
Must have, solid price, not ready out-of-the-box
I bought this in order to get into natural carbonation and pressure fermentation, and I just about love the thing. Obviously, it's easy to use (set a regular to target pressure and adjust the valve til it just barely vents), and it seems relatively sensitive, which is great.

The only caveat: mine came with a fitting that had no plumber's tape, which I applied, and the fittings were loose enough that I hemorrhaged CO2 until I soap-tested the thing and tightened it. Also, I looked into making one myself, and the price is very similar, so it's worth mentioning that this thing is a solid deal.

In summary: totally get this if you need it (you do or you don't), but be prepared to tighten it up - when in doubt, check each connection with soapy water while under moderate pressure
January 25, 2019
1 year ago
To spund or not to spund
This thing is great i have been spunding like crazy since i got it.
December 2, 2018
1 year ago
Works great after I tightened one side, it was leaking.
November 6, 2018
over 2 years 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
over 2 years ago