Vimek Industries is specialized in Manufacturing and Supplying of Orifice Plate, Stainless Steel Orifice Plate, Carbon Steel Orifice Plate since 1991, we manufacture wide range of Orifice Paddle Plate, Paddle Type Orifice Plate, Restriction Bore Orifice Plate, Concentric Bevel Bore Orifice Plate, Eccentric Bevel Bore Orifice Plate, Segmenta Bore Orifice Plate, Quadrant Bore Orifice Plate, Ring Type Joint Integral Orifice Plate etc.
ORIFICE PLATE :
Orifice Plate is the heart of the Orifice Meter. It restricts the flow and develops the Differential Pressure which is proportional to the square of the flow rate. The flow measuring accuracy entirely depends upon the quality of Orifice plate, its installation and maintains. When measuring wet gas or saturated steam a weep hole is drilled in a concentrically bored orifice plate. This is a small hole drilled on the orifice plate such that its location is exactly on ID of the main pipe. The Orifice plates are manufactured as per ISA / AGA/ API / ANSI standards and in various materials such as SS304 /SS316 / SS316L /Hestoly C / Monel / ASTM A516 Grade 70 etc.
RESTRICTION ORIFICE PLATE :
A Restriction Orifice Plate is similar to an orifice plate but is much thicker. It is used to drop upstream pressure of a system. While passing the fluid through thick plate energy is lost in friction and heat resulting considerable pressure drop.
Normally single Orifice Plate having larger Thickness is used. However when the Flow velocities crosses the limit of critical flow and are subjected to sonic velocities to avoid noise vibration and cavitations in the liquid the Restriction Orifice Plates are designed in multistage form. For Viscous fluids and low Reynolds number the upstream side of the Restriction Orifice plate is beveled.
The discharge coefficient of the restriction orifice plate is, also as per the orifice plate, approximately 0.6 according to ISO 5167. The bore is designed as per ISO 5167 and thickness as per R.W Miller/Ward-Smith.
When the noise through single hole is beyond the acceptable limit sometimes Multi Hole plates are used as restriction orifice plates .The process condition defines the no of holes. Multistage with multi holes restriction is also a possible combination.
High Quality Orifice Plate in Stainless Steel Grade like 304, 316L, 310S, 321, 347, 904L etc.as well Dual Grades Like, 304/304L , 316/316L. we keep in house huge Inventory of Stainless Steel Plate of Manufacturer like Jindal / Posco / Aperam Stainless / Tsingshan etc.
They are used for creating a differential pressure drop in which to measure the flow rate between two points located at the pressure taps of orifice flanges. Turn Down Rate for orifice plates are less than 5:1. Orifice plates used for flow measurement require a bevel on the downstream side.
This most common bore used in the industries. This is the only type generally accepted for use in custody transfer measurement, since adequate data is not available for other bores. Used primarily for clean homogeneous liquids, gases, non viscous fluids. The bevel is matched at 45o angle to the desired throat thickness.
Used for measurement of flow for fluids containing solids and slurries. It is also used for vapors and gases where condensation is present. The eccentric bore is offset to where the bore edge is inscribed in a circle that is 98% the line id.
This type is not used for flow measurement but for dropping the pressure considerably and reducing the flow accordingly. The bore is not beveled but kept straight. The beta ratio has no limit as accuracy is not the goal.
The segmental bore is located in the same way that the eccentric bore is. This type is used primarily for slurries or extreamly dirty gases wher the flow may contain impurities heavier than the fluid.
These are available in oval or octal shapes. Orifice plate is a part of RTJ gasket..