FLOW MEASUREMENT
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We specialize in Orifice Plates
ANY SIZE…ANY MATERIAL…ANY THICKNESS
USA Industries manufactures each Plate to meet or exceed standards by A.G.A., I.S.A., A.N.S.I., A.S.M.E., and A.P.I recommendations.
Stocked plates include 304 & 316 Stainless Steel in 1/8" and ¼" thicknesses. Other material and/or thicknesses are available upon request.
While typically we bore the Plates to the customer’s supplied sizing calculation, we can provide sizing calculation services to you for an additional fee.
Series 500 Universal Plates - for Daniels Senior and Junior
Assemblies.
Series 520 Paddle Plates for Raised Face Flanges
Series 560 & 590 Plates Ring Tongue Joint Plates - Male or Female.
We also provide Orifice Flanges in both Carbon and Stainless Steel, as well as Orifice Plate Holder Assemblies.
Restriction Orifice Unions from ¼” to 2” in socket-weld or Female NPT Threads and Daniels Senior Assembly repair and replacement parts.
Concentric Bore
Used primarily for clean liquids, gases, or vapors that are relatively non-viscous. The bevel is machined to a 45 degree angle to the desired edge thickness. Accuracy range at +.6% for beta ratio between 0.2 to 0.75.
Eccentric Bore
Primarily used for measurement of entrained solids or slurries or vapors and gasses where condensation is present. The eccentric bore is offset to where the bore edge is inscribed in a circle that is 98% of line I.D. Accuracy range between +1.5% to +2% for beta ratio between 0.3 to 0.75.
Quadrant Bore
This type of orifice bore is used primarily in the measurement of high viscosity flow, such as heavy crude, syrups, and slurries. The radius on the inlet side is equal to the plate thickness. The quadrant is always recommended where the Reynolds Number factor is less than 100,000. Accuracy is +2% for beta ratio between 0.24 to 0.6.
Segmental Bore
The segmental bore is located in the same way that the eccentric bore is. These bores are used primarily for slurries or extremely dirty gases where the flow may contain impurities heavier than fluid. Accuracy is +2% for beta ratio between 0.35 to 0.75.
March 11, 2010
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