The Sspunding Valve from Ss Brewtech allows you dial in the precise pressure at which you want your Unitank fermenting. A spunding valve is essentially an adjustable pressure relief valve. Normal PRVs that are found on kegs, couplers and come stock on Ss Unitanks, operate as safety features that will release pressure when it's nearing dangerous levels. Spunding valves, on the other hand, allow you to set the release pressure much lower. Simply dial in your desired fermentation pressure, and the Sspunding valve will release excess pressure when it gets too high.

The scaled Sspunding valve 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. If you're looking for a more affordable option, check out FE892A for the non-scaled version.

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

You can pair the spunding valve with a 1.5" tri-clamp tee (H666) and 90-degree elbow (H667), which enables the unit to be installed on the Unitank’s blow off arm, as shown in the photo.

Not for use on low pressure vessels (Chronicals, etc.)

For Your Safety: Always leave the fixed-pressure PRV included with the Unitank in place. Never exceed the maximum rated working pressure of the vessel at any time during operation.