Description
When an orifice plate assembly is used as an integral part of a flow control valve control circuit, it provides the differential pressure (P) to power the flow control pilot. The opening and closing of the pilot causes the flow control valve to throttle accordingly. Total head loss across the valve is reduced by locating sensing ports close to the orifice plate, to sense downstream pressure before it recovers. The orifice plate internal diameter is calculated and machined according to valve size and required flow limitation. Standard material is plastic, with optional version is stainless steel.
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