The Sterile Filter Shunt Valve is a steam traced 2-Way divert valve designed to provide the flexibility of changing from one vent filter cartridge to another on WFI storage tanks without interrupting operations. Changing a vent filter cartridge on a WFI tank while the system is in operation is normally not possible due to the likelihood of contaminants entering the tank. Smaller systems can be shut down for a short period of time, and with the use of a sterilizable upstream block diaphragm valve, restarted after steam sterilization of the housing, cartridge, connecting tubing, and upstream section of the valve. Large systems designed for continuous use require two separate vent filtration units. The sterile filter shunt valve is a sterilizable tank vent shunt valve assembly mounted on a single nozzle designed for this specific purpose. A steam traced version of this valve is also available which, when used in conjunction with a steam jacketed filter housing, will prevent condensation from forming inside the housing. The assembly consists of two diaphragm valves with a common downstream port. The upstream side of the valves is connected to the two filter housings. The common port is connected to the tank vent nozzle. A steam condensate discharge port is positioned tangential to the weir of both valves. Two additional diaphragm valves are used to close the condensate port after sterilization. These valves in turn are connected to a steam trap which then goes to drain.

Available in 1 1/2” and 2” valve sizes (DN 40 and DN 50).
Larger ferrule connections adapted to connection vessel available.