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The What, How, Where and Why of Relief Valves
solid PTFE shaft passes through three (3) U-cup seals which effectively isolates the liquid from the spring. An elastomer seat at the end of the shaft seals across the valve orifice. B. In a diaphragm design of either PTFE or an elastomer the diaphragm becomes both the seal isolating the spring
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Guidelines for Filtration
on components of sliding type surfaces, metal erosion will occur on valve control edges, seating surfaces, restrictions, and throttles. Filtroil - Executive Overview. Executive Overview | Contact | FAQ | Request a Quote | ExxonMobil Distributor Login. Engine Oil Filters. Focus Portable Units
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MICRO: Spotlight
for closed-loop control. The user simply sends a signal specifying the desired flow rate and the integrated needle valve automatically makes the required adjustment. (S.F., Esplanade, Booth 4426). Gas cabinets. SpectraSure gas-delivery systems from BOC Edwards meet the needs of the next-generation fab and can
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Micro Fluidic Flow and Pressure
. sensor, control valves, electronic circuitry, three-way valve). footprint. Additional modules with. argon. Furthermore, the dynamic. this footprint, necessary for the real-. behavior of each of the instruments. ization of miniature flow pressure. was measured by performing vari-. control systems
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MICRO:Top 40 (Nov '00)
applications. The system's front-referenced carrier technology features an edge-tuning design to ensure within-wafer uniformity. A multiprobe, broadband optical end point assures complete copper removal over 100% of the wafer surface. A lightweight, compact safety valve for semiconductor applications
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MICRO:Top 40 (Nov '00)
applications. The system's front-referenced carrier technology features an edge-tuning design to ensure within-wafer uniformity. A multiprobe, broadband optical end point assures complete copper removal over 100% of the wafer surface. A lightweight, compact safety valve for semiconductor applications
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Transferring and Metering Liquids with High-Speed Diaphragm Pumps
or system volume; the pump runs for a precisely defined time, or until a level sensor is triggered. The precision of metering of a high-speed liquid diaphragm pump can be significantly increased if a solenoid valve is installed either before or after the pump, or if a pressure control valve is fitted
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MICRO:Product Technology News (Jan '99)
The adjustable fluid flow control and end-of-cycle snuffback features of the Model 725DA-SS valve eliminate drips in spin coating applications. A stainless-steel fluid chamber, an inert polymer diaphragm, and sealing head isolate the actuator from wetted components to ensure trouble-free cycles