ORIFICE FLANGE ASSEMBLIES are used for measuring the flow of various Liquids, Gases & Steam suitable for creating differential pressure in a pipeline 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 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 another obstruction is placed in the fluid flow, due to an 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 mm1 to 24 line sizes. It gives an acceptable level of uncertainties at the lowest cost and long life without regular maintenance.