Introducing our new line of adjustable pressure relief valves, commonly referred to as spunding valves.  These valves enable Unitank fermenters to both ferment under pressure and condition beer before transferring to a keg.

The scaled version includes an etched sleeve with a scale between 0-2 BAR, along with a pressure-calibrated spring.  This version is perfect for a home or nano brewer that wants to be able to dial in pressures on the fly without having to match the release pressure using a gauge. The scaled version also features a pressure release knob to quickly and easily verify or equalize tank pressure.

Non-Scaled | up to 2 bbl

The compact non-scaled version is perfect for a homebrewer that doesn’t mind taking the extra minute or two to dial in their valve’s release pressure using the gauge included with their Unitank.

The kits are designed to hook up the Sspunding Valve to the Unitank blow-off arm as shown. Kit versions include the following:

• Sspunding Valve
• Micro Tee
• Micro 90° Elbow
• 3x 1.5″ TC Clamps
• 3x 1.5″ TC Gaskets

The polycarbonate cup is designed to hold sanitizer so that the tank remains 100% sanitary throughout the course of the fermentation process. 

Lastly, a final note on safety, always leave the fixed-pressure PRV included with the Unitank in place, and never exceed the maximum rated working pressure of the vessel at any time during operation.