An engineering team at Humphrey Products has engineered a one-piece pneumatic diaphragm valve for use in a medical anesthesia machine. The brass-body valve includes an integral pilot actuator and reportedly operates with zero leakage at 50 psig. Its design represents a departure from traditional anesthesia machine valves, which typically use a two-piece configuration that incorporates sliding seals. In contrast, Humphrey's valve employs a diaphragm that incorporates no sliding seals, and therefore can operate precisely for millions of cycles. For more information, visit http://rbi.ims.ca/4388-539.
Fifty-six-year-old Pasquale Russo has been doing metalwork for more than 30 years in a tiny southern Italy village. Many craftsmen like him brought with them fabrication skills when they came from the Old World to America.
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