Diaphragm is a type of standard narrowing device (SD) made in the form of a thin disc with an orifice having a sharp rectangular (sometimes conical) edge on the inlet side of the flow. The purpose of the diaphragm is to measure the flow rate of the medium using the variable differential pressure method.
DFS - diaphragm with flanged differential pressure sampling.
pressure. It is used at the nominal bore diameter from 50 to 400 mm inclusive and overpressure in the pipeline not more than 10 MPa..
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