Flush seal drain assembly with PTFE valve stem and PFA encapsulated silicone O-Ring for use with beaded reaction flasks

By rotating the handle, plug rises into the flask and seals to afford zero dead space. Back thread out to drain through 1-inch beaded pipe angled side port. Supplied with CAPFE O-Ring for seal at flask, two Kalrez O-Rings supplied on valve stem. For stabilization, when using long shaft lengths or stirring viscous media, it is suggested that the flush seal drain valve with pin be used. This will prevent shaft oscillation or vibration and help to maintain a concentric stirring motion.