Ball Lock Spunding Valve (w/ Pressure Gauge)

Ball Lock Spunding Valve (w/ Pressure Gauge)

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Due to high demand, this item is currently out of stock. Be the first to receive your items by placing a pre-order today. We will automatically ship this to you when we receive more inventory.


A spunding valve is a great accessory to have when performing pressure transfers and is a must-have for fermenting under pressure. Designed by the MoreBeer! R&D team and made from stainless steel components for long-lasting quality. Our spunding valve features the Torpedo Keg gas-in disconnect and our specially designed adjustable stainless gas pressure relief valve (D1833L). This model also features a pressure gauge that reads from 0-15 psi.

Don't need the gauge? Check out our FIL42S.

Pressure Fermentation
Pressure fermentation is becoming more and more popular at the homebrew level, but in order to do it safely and accurately, you need a way to release excess pressure. You'll pressurize your vessel to your desired psi, but once fermentation begins and those hungry, active yeast start creating CO2, the pressure inside the vessel will increase. Attach a spunding valve and set it to your desired pressure, and it will blow off when the pressure gets to high and close up again when it's back to your desired psi.

Pressure Transfers
Even if you don't have a pressurizable fermenter, you may have done pressure transfers from keg to keg during filtering or after fining. During pressure transfers, it's a good idea to have a bit of head pressure in the receiving keg, especially if you're transferring beer that is already carbonated. Having a spunding valve in place will allow you to consistently control the head pressure and give you more consistent results, without losing carbonation in the process.


Note: The very end of the pressure relief valve can be adjusted by unscrewing the knurled adjustment knob. If too tight and not adjustable by hand, wrap a towel around the adjustment knob and loosen with pliers. Then finger tighten or loosen to desired pressure.

Prebook Item: Please note this item is not currently in stock, but is available for Pre-Order. We do require payment in full in order to reserve stock.
Item # FIL42AS
Weight 0.57 LBS
Community Q&A

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Browse 3 questions Browse 3 questions and 17 answers
Why did you choose this?
MoreFlavor Store
ferment in corney ket
Nicholas B on Jul 28, 2021
This spunding valve will help my solera maintain a constant pressure.
Paul A on Apr 15, 2021
ferment in corney ket
Nicholas B on Jul 28, 2021
Looks clean
DanielJ Puglia on May 27, 2021
This spunding valve will help my solera maintain a constant pressure.
Paul A on Apr 15, 2021
I want to pressure ferment in the SPIKE CF15.
C. Picard C on Mar 9, 2021
Gustavo G on Feb 3, 2021
time to do some pressure fermentations and transfers
Valued C on Feb 2, 2021
Robert G H on Dec 8, 2020
For natural carbonation
John M on Jul 31, 2020
I'm wanting to do pressurized transfers
Brad H on May 6, 2020
to spund with some calibration
James McLaughlin on Feb 25, 2020
It's stainless
JUSTIN G on Jan 21, 2020
Reduce foam during closed transfers of carbonated beer
Nelson L on Jan 20, 2020
Fermenting under pressure in corny keg
Eric on Jan 14, 2020
Setting up for pressurized fermentation
D. Francis on Dec 30, 2019
Need to monitor pressure in conical kegs once filled.
David P on Nov 26, 2019
Looks clean
DanielJ Puglia on May 27, 2021
I want to pressure ferment in the SPIKE CF15.
C. Picard C on Mar 9, 2021
Does this spunding valve fit on a cornet?
Phillip Dominguez on Nov 11, 2020
BEST ANSWER: As long as the keg has a ball lock post then yes it will fit
Is krausen or beer foam an issue with either the valve or the gauge, and what precautions are necessary to prevent these issues?
Brett Binns on Jan 12, 2020
BEST ANSWER: Brett - Best to use some kind of fermcaps and decent headspace, but the pressure actually keeps the krausen down.

3.2 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 4 out of 5
I found it to be aesthetically pleasing, and the compact size, a bonus. My only concern, it tended to bleed off a few psi over the course of a few days. It wasn't a big deal. I just used my CO2 tank and regulator to bump it back up to the desired pressure. I made sure all connection points were wrench tight, so my assumption is the pressure regulating valve has a slight leak.
August 10, 2021
2 months ago
Rated 3 out of 5
Issues out of the box, but was an easy fix
I picked one of these up, as it was the only available option. Out of the box it would not hold any pressure. After removing the end, there was a tiny bur of metal blocking the valve from closing and making a solid seal. Once I removed it, added some keg lube to the o ring, it worked fine through two fermentations. The pressure gouge also is a bit off registering 6 PSI when it's 10.
April 7, 2021
7 months ago
Rated 1 out of 5
I’m fairly competent when it comes to kegs, home brew parts etc. After watching videos of how this works, I set mine up. Right away I heard hissing. I made an adjustment on the knob. Still hissed. I finally grabbed the adapter where it met the post and found the source. The seal was loose.

I waited a day to see if more pressure would help. The next day the PSI read off the charts. So I dialed it back to 10 psi. 1 day later it was to 14 PSI. I dialed it back again, this time to 8PSI. 2 days later I went to check it and it had lost pressure. Very disappointed.
May 27, 2020
1 year ago
Response from MoreFlavor
Hey so sorry about your experience. Thank you so much for your feedback. We really appreciate the honesty and value great feedback like this as it helps us improve our products. We try very hard to create the best experience for our customers and provide quality products. Please give us a call at 1-800-600-0033 or email us at info@moreflavor.com so that we can assist you. We are here to help. Cheers!
May 29, 2020
Malcolm lieban
Rated 5 out of 5
Steel is real. Works very well.
Works great. I hesitated in buying this after listen to a competitor sell me on the red plastic option. Steel is real. This is a reliable device that I believe will out perform the plastic version over time.
April 29, 2020
1 year ago
Rated 3 out of 5
It works.
The Spunding valve works as it should. I gave it 3 stars because the gauge is as cheap as they come. It’s actually crooked, in relationship to its NPT fitting.
I’ll probably change the gauge to a nice liquid filled one. Then it would be a 5 stare gauge.
User submitted image
Added Dec 3, 2019
December 3, 2019
1 year ago