Paddle Type Orifice Plates (Series 520)

Series 520 Paddle Type Plates are manufactured for use with Raised Face Orifice Flanges, Flat Face Flanges, and Holding Blocks

USA Industries' Series 520 Paddle Type Orifice Plates are designed for use with Raised Face Orifice Flanges and Holding Blocks, meeting or exceeding AGA, ISA, ANSI, ASME, API & AWWA standards. Crafted by skilled artisans using advanced machining practices, these plates ensure top-notch quality.

Employing cutting-edge CNC machines, we produce paddle-type orifice plates that adhere to the strictest manufacturing processes and achieve optimal accuracy standards. Our team of trained mechanical engineers can swiftly and accurately run your bore calculations for an additional fee.

Our orifice plates are stocked in 304 & 316 stainless steels, and we can manufacture them in any material you prefer, including monel, hastelloy, copper, nickel, and more. USA Industries also offers the option to coat your orifice plates with any specified coating.

Select Flange Rating to see specs.

Flange Rating
Line Size A HL HW T
Please select Flange Rating
• All Sizes in Inches
• Additional Sizes Available

Orifice Plate Bore Calculation Form


  • Meets or exceeds AGA, ISA, ANSI, ASME & API standards
  • Available in any material requested
  • Fast and accurate orifice bore calculation service is available
  • USA Industries will provide coatings upon request
  • In-stock items ship within 24 hours

Let USA Industries' engineers calculate the correct bore size based on process data for the project.


Series 500, 520, 560, 590 &
Restriction Union Line Sheet

USA Industries Is Available 24-7-365 Days of the Year Clock Badge Hero Image

Frequently Asked Questions

Find USA Industries Listing on: