This Blue Pressure Relief Valve can be used to keep 10psi of pressure on your ale ferments in our Fermenter King P.E.T. Pressure Fermenter/Unitank range.
The blue PRV will lift when pressure exceeds 10psi and will reseal at the end of fermentation when the pressure drops back.
Please note, there will be a hissing noise throughout fermentation when using these PRVs.
Brewers will need to replace the blue PRV with the red PRV to carbonate at pressures higher than 10psi.