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.
The implementation of a new diesel fuel standard in the US has considerably improved the environmental performance of diesel vehicles. The Environmental Protection Agency (EPA) says that the new ultra-low sulfur diesel (ULSD) fuel has combined with other improved technologies to reduce diesel's particulate matter (PM) emissions by 99%.
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