The Flow Control Div. of Flowserve Corp. has introduced the Durco Mach 1 high performance plug valve. Available in ASME Class 150, 300 and 600 (derated) flanged ends, these valves feature lower, constant turning torques comparable to ball and plug valves. Mach 1 valves are unaffected by increases in line pressure, and they save actuation costs by using actuator models that are one or two sizes smaller than those required for comparable plug valves. Designed with an ISO mounting pad, the Durco Mach 1 also features temperature coverage ranges from -20 degrees F (-29 degrees C) to 525 degrees F (275 degrees C) with excursions to 550 degrees F (288 degrees C). www.flowserve.comFlowserve Corp. Flow Control Div.