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P289RC Exhaust Booster

P289RC Exhaust Booster
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Catalog excerpts

The P289RC is designed as a high capacity exhaust booster and used in applications utilizing large pneumatic actuators and valve controls where a rapid response is required. Ideally suited in applications with surge valves or recycle valves on compressor stations where the operation is sped up to accommodate compressor surges and sudden pressure changes from the out devices. The 1/4" spring case port is connected to the controlling instrument such as an I/P, Controller or Positioner, and the 1" supply/ relief port is connected to the actuator. It is required for proper operation that a bypass valve connect the inlet and outlet of the P289RC wherever is convenient. The greater the differential pressure develops across the bypass valve the further the exhaust booster opens. The factory set opening of the P289RC is approximately 1.5 PSIG and is not adjustable in the field. As the differential pressure decreases between the controlling instrument and the actuator, the booster exhaust valve closes. SIGNAL PORT BYPASS VALVE

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