Orifice Plates
for Flow Measurement

We manufacture our flow measurement Universal Orifice Plates, Paddle Plates, Ring Type Joint (RTJ) Plates and Restriction Orifice Unions to meet or exceed standards set 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 1/4" thicknesses. Other material and/or thicknesses are available upon request. We typically bore the plates to customer supplied sizing calculations; however, we can provide sizing calculation services for an additional fee.

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Orifice Plates, RTJ Plates & Restriction Orifice Unions

Series 500 Universal Orifice Plates & Seals

Designed to be used with all std. orifice fitting assemblies or RTJ plate holders.

Commonly used for flow measurement due to their simplicity, reliability, and easy installation.

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Series 520 Paddle Type Orifice Plates

For use with Raised Face Orifice Flanges and Holding Blocks.

Our Paddle Orifice Plates meet the best accuracy standards. Our engineers can run your bore calculations.

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Ring Type Joint (RTJ) Plates

The RTJ Plates joins an integral gasket (oval or octagonal ring) for mounting between RTJ Flanges. RTJ Plates have no moving parts and are suitable for high temperature and pressure applications.

Available in series 560 (one-piece) or 590 (two-piece).

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Restriction Orifice Unions

Consists of one-piece SS Orifice Plates shaped to fit the contour of the union seat (ball-to-cone), eliminating the need for gaskets.

Plates can be configured as recessed, pressed, or pressed with tab to identify size without breaking the union.

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