Clippard (Cincinnati) has Its Clippard NIV Series media isolation valve — a solenoid-operated device using a flexible diaphragm to isolate the actuation mechanism from the fluid path.

Media isolation valves find everyday use in a wide variety of applications. Think uses that require precise, repeatable dispensing of media for analytical instrumentation. Clippard says media isolation valves serve a purpose in drug dispensing, laboratory equipment, analytical, chemical analysis, sampling, life science/biotech, genetic research, gas chromatography, spectrometry, DNA synthesizing, blood analyzing, printing, diagnostic equipment, fermentation, water treatment and more.

All wetted areas of the NIV Series valve are PEEK or PTFE, which Clippard says is ideal for use with corrosive media.

The NIV Series also has a one-piece valve stem that functions as a sealing membrane while also supporting and centralizing the poppet in the seating area. The multi-functional poppet/diaphragm/stem produces a simplified design with fewer parts (only two for the 2-Way and three for the 3-Way), longer life and zero dead volume, according to Clippard.

Four orifice sizes are available as 2-Way Normally-Closed, 2-Way Normally-Open, or 3-Way Selector/Diverter.