Alfa Laval SB Anti Vacuum Valve Safety valves Introduction The Alfa Laval SB Anti Vacuum Valve is a compact safety valve that protects tanks from collapse or implosion due to internal vacuum conditions. These conditions occur during emptying, cool-rinsing after hot-cleaning, or caustic cleaning in a CO 2 atmosphere. The compact, easy-to-clean safety valve fits onto any closed process tank, optimizing the personnel safety, reliability and performance of critical processes and maximizing uptime. Application This safety valve is designed for use in hygienic processes in the brewery, dairy, food, beverage and many other industries. Benefits • Greater process safety • Low initial cost of investment • Compact design • Superior hygiene • Easy installation Standard design The Alfa Laval SB Anti Vacuum Valve is a flange-mounted safety valve. All product wetted steel parts are made of AISI 316L stainless steel with a surface roughness of Ra< 32 μin; all other steel parts are made of AISI 304L stainless steel. All product- wetted seals are made of EPDM and all product-wetted polymers are made of PEEK. The valve is PED 2014/68/EU- compliant and available in two versions: either integrated in a SCANDI BREW® tank top system or mounted on its own counter flange. Working principle The Alfa Laval SB Anti Vacuum Valve is delivered with a counterweight set and locked for an individual opening vacuum to suit the tank or vessel design pressure. When a vacuum in the tank or vessel is lower than the pre-set opening value, the valve opens and lets in atmospheric air. 314
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