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Duotight Blowtie 2 Spunding Valve

Duotight Blowtie 2 Spunding Valve


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Duotight Blowtie 2 Spunding Valve

If you want to control the pressure in a pressurized vessel then the Blowtie diaphragm spunding valve is the perfect tool for the job. The Blowtie 2 comes with a presure gauge that can be set from 0 to 15psi. Pressure fermentation is becoming very popular and the Blowtie is an excellent tool to regularize the pressure in your FermZilla or keg.
This spunding valve can also be use in a closed transfer system where a carbonated drink is being transferred from one container to another. Using this spunding valve will reduce the lose of carbonation in the drink.


Use the yellow adjustment knob to control the pressure coming out of the pressurized vessel. Clockwise will release at a higher pressure and counter-clockwise will release at a lower pressure.
We recommend pressurizing  a keg to a known pressure e.g. 15psi then attach your Blowtie to the keg and adjust to 10psi.


  • Suits pressures 0-15psi
  • Made from food grade acetal
  • Stainless screws
  • 8mm (5/16") push on both sides
  • 5cm long EvaBarrier tubing included for connecting to a Duotight fitting or disconnect

Note: Ball lock disconnect sold separately