The 245 Valve is a modified version of the Granville-Phillips Series 216 all-metal, bakeable control valve. The 245 Valve is capable of controlling pressure from 10-11 to 6000 Torr, with a maximum throughput up to 2500 Torr-liters/sec (200 slm): The valve can be used with many corrosive gases that preclude the use of other valves. With the valve driver assembly removed, the valve may be baked to 450°C for UHV applications. The stepper motor used to drive the Type 245 allows response to pressure or set point changes in fractions of a second, and will drive the valve from a fully closed to a fully open position in only 15 seconds. The Type 244 Controller completes the system.
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245VALVE - Drawings
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245VALVE
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Upstream Flow Control Valve, Metal Seated, 10-11 to 6000 Torr