The Lee Company (Westbrook, CT) has introduced the Quiet Operation High Density Interface (HDI) Solenoid Valve to improve patient comfort by reducing actuation noise by 50 percent. A typical solenoid valve has an inherent clicking sound when energized, caused by the metal-to-metal contact of the moving armature and stationary core. This new design uses “whisper” technology to provide a sound level measurement of less than 37 dBA when measured at a distance of 24 inches and a valve cycle frequency of 10 Hz. It is available in face mount, plug-in, and ported configurations, and suitable for medical applications with flowing gas or air, such as dialysis machines, patient monitors, ventilators/respirators, and other bedside medical devices.
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