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BlowTie Diaphragm Spunding Valve Complete Kit - KL09706
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$27.98
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Quick Overview
The BlowTie is used to release excess pressure on a pressurized fermenter or from a receiving keg during pressure transfers. This diaphragm spunding valve is much more accurate than the spring and poppet style, and works much better at lower pressures.
Kit Includes:
- BlowTie
- Pressure Gauge
- Ball Lock Disconnect
- Duotight Tee & Flared Duotight Fitting
- 2x Lengths of EVABarrier 8mm OD Tubing
KegLand item #: KL09706
Product Overview
With this complete kit you'll be ready to use the BlowTie Spunding Valve right out of the box. The BlowTie is used to release excess pressure on a pressurized fermenter or from a receiving keg during pressure transfers. This diaphragm spunding valve is much more accurate than the spring and poppet style, and works much better at lower pressures.
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.
Diaphragm vs. Poppet
With the poppet style spunding valve, a spring pushes against a poppet to keep the valve closed. When the poppet lifts up to open, the surface area the gas pushes against becomes larger, and the spring has to work harder to push the poppet down and reseal the valve. This can lead to more gas being released than intended, and the remaining pressure in your vessel may be at a lower psi than your spunding valve’s set psi.
Instead of a poppet, the spring inside the BlowTie pushes against a diaphragm, which has an immensely larger surface area. This means the surface area that the gas pushes against while the diaphragm is closed is significantly closer to the surface area it pushes against when the diaphragm is open. This leads to higher accuracy, and the remaining pressure after excess gas is released will be much closer to your set blow off pressure.
Kit Includes:
- BlowTie
- Pressure Gauge
- Ball Lock Disconnect
- Duotight Tee & Flared Duotight Fitting
- 2x Lengths of EVABarrier 8mm OD Tubing
Customer Reviews
4.9 Based on 17 Reviews
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Filter Reviews:
K
01/12/2022
kurt 
United Statescheck the regulator
I tried to use this and couldn't get it to work. I was about to give up when I noticed the regulator was installed backwards. There is an arrow on the body. Once I flipped it around to point away from the gauge and input tube (easy to do because of the duotight fittings) it worked.
BM
01/08/2022
Brett M. United States EP
12/23/2021
Eric P. United StatesSpending Valve
This a great piece to add to my fermzilla now it has everything to brew all year long. I just added a spikes 15 gallon conical fermenter to go with fermzilla. Now I can brew small and big batches
MZ
10/31/2021
Miguel Z. United StatesIt works!
What can I say, its does what its supposed to do. Easy to put together, and Easy to use.
DB
10/29/2021
Douglas B. United StatesGreat Spunding Valve
Easy to assemble, set up and use!! Great product and a great value!!
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