| 摘要 |
A balanced pressure regulator valve having a pressure chamber between a diaphragm actuator for the valve and a portion of the valve stem to provide an inlet pressure in the pressure chamber which is substantially equal to the inlet pressure on the inlet side of the valve. The portion of the diaphragm forming the balancing pressure chamber has a fixed portion for the adjoining portion of the diaphragm to react against while permitting the remaining portion of the diaphragm to respond to outlet pressure to variably position the valve.
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