Isolation Valves
Clippard, Cincinnati, OH, offers isolation valves with a hit-and-hold option that minimizes the heat generated by the coil when the valve is energized for longer than 5 minutes. The general principal behind a hit-and-hold circuit is that the valve is energized to full power for a short period of time before dropping the voltage and current to a specified level. The optimized duty cycle is factory set and is available on the company’s isolation and pinch valves. The valves provide for lower power consumption, less heat generation by the coil, and increased life cycle. They are ideal for applications that are sensitive to heat rise.
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Silicone Tubing
Raumedic AG, Hembrechts, Germany, has expanded its portfolio of biopharmaceutical transfer tubing. With the new SILMOTION®-H series, the company now offers a prevalidated standard product for applications with increased operating pressure. The tubing is made of pharma-grade silicone with an increased hardness of 80 Shore A. The transfer tubing is designed for the special requirements of biopharma fluid handling. It is available in standard dimensions, and custom sizes are available on request. A free validation and extractables guide is available.
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Rotary Grippers
Festo, Islandia, NY, has expanded its line of compact grippers to offer infinite rotation capabilities. The EHMD is ideal for life science automation applications where small objects need to be gripped and turned in a confined space. An optional module with Z-compensation automatically adjusts to cap thread pitch without moving the Z-axis, eliminating changeover times. EHMD grippers are offered in 40- and 50-mm sizes. The grippers come in a fully electric or pneumatic versions. When powered by the company’s multiprotocol servo drive, CMMT-ST, the grippers can grasp and turn with variable levels of force.
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Precision Orifices
O’Keefe Controls Co., Monroe, CT, offers precision orifices designed for applications including accurate reagent dosing in diagnostic devices or stabilizing breathing gas flows in critical care. Medical applications often require miniature orifices with extremely tight tolerances to ensure the accurate, repeatable flow critical to patient care. Available in sizes as small as 0.0003 in. diameter, the precision orifices can be provided with flow and pressure data, which is taken on NIST-traceable instrumentation.
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