Note: Not all regulatory requirements
are available in all size/model combinations (consult with factory).
Approvals provided upon request. |
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Pressure Reducing Valve and Downstream Surge Control
The PR pilot valve senses the downstream pressure through a
connection at the valve outlet. Under flowing conditions, the pilot
reacts to small changes in pressure to control the valve position by
modulating the pressure above the diaphragm. The downstream
pressure is maintained constant at the pilot set point (adjustable).
The surge pilot senses the downstream pressure. If the pressure
rises above the PR pilot setting and reaches the surge pilot setting,
the surge pilot opens in order to close the main valve rapidly.
The following documents are presented in PDF format
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