Professional Sanitary Spunding Valve - 1.5" Tri-CloverFeatures of the 1. 5 Spunding Valve 304 stainless steel Adjustable from 2 psi up to 2. 2 bar 1. 5" Tri clamp connection. Benefits of the 1. 5 Spunding Valve Pressurized fermentation can create lagers at room temperature without the need for temperature control. Perfect for Naturally Carbonating Beers. Speeds up the Fermentation Process. Produces More Consistent Beers. Caution: Spunding valves should never be used as the primary pressure relief. The