ORIFICE FLANGE ASSEMBLIES are used for measuring flow of various Liquids, Gases & Steam fromSuitable for creating differential pressure in a pipe line for flow transmitter etc. Orifice flange assemblies consist of weld neck type flanges with studs, nuts, and gaskets.Available in SS-316/P.P.Material.Design standard confirm to BS 1042 1  to 24 line sizes. It gives an acceptable level of uncertainties at lowest cost and long life without regular maintenance.Orifice Plates are most commonly used as primary element for flow measurement in pipelines based upon the principle of measurement of Differential Pressure created when an obstruction is placed in the fluid flow, due to increase in fluid velocity.Design Standards:DESIGN - Confirming to ISA RP 3.2, DN 1952, BS 1042, ISO-5167ORIFICE BORE - Confirming to ISO 5167ACCURACY - Within /- 1 %VENT / DRAIN - Vent OR Drain holes are provided as per customers requirement. Not drilled for Orifice Bore smaller than 25.4 mm