Combined safety valves incorporating pressure relief and anti vacuum valves in a single unit
The Alfa Laval SB Anti Vacuum House minimizes the risk of implosion in closed process tanks that are subject to vacuum conditions, such as while filling or emptying the tank, cool rinsing after hot-cleaning, or caustic cleaning in a CO2 atmosphere. Capable of being integrated into a SCANDI BREW® tank top system, the valve is designed for hygienic processes in the brewery, dairy, food and beverage industries.
The Anti Vacuum House is used for minimizing the risk of implosion of tanks exposed to vacuum e.g. during emptying, cool-rinsing after hot-cleaning or caustic cleaning in a CO2 atmosphere. The Anti Vacuum House can be combined with safety valves or pressure regulators mounted the top.
The Anti Vacuum House operates as standard at 50 mmH2O / 5 mbar for all valve sizes. Safety valves protect the vessel and ensures discharge if pressure in the tank exceeds the preset opening value.
Regulating valves ensures pressure exhaust if pressure in the tank exceeds the preset opening value.
The Anti Vacuum House can be cleaned during tank CIP cycle by connecting CIP nozzle to main CIP supply.
CIP flow is approximately 500-800 l/min.
When the tank is cleaned a small volume of cleaning fluid will pass the valve body and clean the seat. To ensure thorough flushing of valve seat, force opening of the valve is necessary – this must be done when the tank is pressureless. The use of a drain collector is recommended to prevent CIP fluid spilling on to the tank.
Compliance Pressure Equipment Directive 2014/68/EU of the European Community, Fluida Group II