The new Quiet Operation High Density Interface (HDI) is a three-way solenoid valve designed to increase patient comfort by reducing actuation noise by 50%. A typical solenoid valve has an inherent clicking sound when energized, which is caused by the metal-to-metal contact of the moving armature and stationary core. The new Quiet Operation HDI uses “whisper” technology to provide a 10 Hz valve-cycle frequency and a sound level measurement of less than 37 dBA when measured at a distance of 24 in. Available in face mount, plug-in, and ported configurations, the Quiet Operation HDI is suitable for medical devices using flowing gas or air such as dialysis machines, patient monitors, and ventilators/ respirators.

The Lee Company, 2 Pettipaug Rd., PO Box 424, Westbrook, CT 06498, (800) 533-7584, www.info.hotims.com/36184-503