Weirless Diaphragm Valves Eliminate Cross-Contamination

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Watson-Marlow Fluid Technology Group’s ASEPCO Weirless Radial diaphragm valves eliminate dead legs and product entrapment.

Watson-Marlow Fluid Technology Group (WMFTG)’s ASEPCO Weirless Radial diaphragm valves use integral travel stops and a patented radial shoulder seal to completely isolate process fluids and eliminate dead legs and cross-contamination. Unlike weir-style diaphragm valves, which can introduce product entrapment and leakage, the weirless valves are contamination-free and feature a 180° flow path, with drainability in multiple orientations without leakage.


The weirless valves feature a clean, self-draining design with a simple clamp assembly that reduces change time from as much as 20 minutes (with a typical weir-type valve) down to a minute. The valves are easy to seal and inspect and never need retightening or adjustment. No tools are required for maintenance.


The valves offer installation flexibility for compact skids; more compact systems require less time to get up to temperature and achieve sterilization, thus improving efficiency of biopharmaceutical processes. Actuators on the valves have numerous options, including a control interface that enables users to use the weirless valve to control flow in process lines.


Source: Watson-Marlow Fluid Technology Group