Series 520 Paddle Orifice Plates
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Orifice Plates
for Flow Measurement

Series 520 Paddle Orifice Plates


Manufactured for Use with Raised Face Orifice Flanges and Holding Blocks

Product Features

• Meets or Exceeds AGA, ISA, ANSI, ASME & API Standards
• Available in any material requested.
• Fast and accurate orifice bore calculations available
• USA Industries can provide coatings upon request

Product Description

USA Industries' Paddle-Type Orifice Plates are manufactured for use with Raised Face Orifice Flanges and Holding Blocks.

Skilled craftsmen and state-of-the-art machining practices assure that our paddle orifice plates meet or exceed the stringent requirements of AGA, ISA, ANSI, ASME & API Standards.

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Our paddle-type orifice plates conform to the most stringent manufacturing processes to achieve optimum accuracy standards in the industry. Our engineering staff can run your bore calculations quickly and accurately.

Paddle-type orifice plates are stocked in 304 & 316 stainless steel and available in any material requested, such as monel, hastelloy, copper, nickel, and more. USA Industries' can also coat your orifice plates with any coating you require.

Paddle Orifice Plate Sizing Chart
Orifice Plate by Flange Rating
Line Size A HL HW T
1/2" 1 7/8" 2 1/8" 2 1/8" 2 1/8" 2 1/2" 2 1/2" 2 3/4" 4" 1" 1/8"
3/4" 2 1/4" 2 5/8" 2 5/8" 2 5/8" 2 3/4" 2 3/4" 3"
1" 2 5/8" 2 7/8" 2 7/8" 2 7/8" 3 1/8" 3 1/8" 3 3/8"
1 1/4" 3" 3 1/4" 3 1/4" 3 1/4" 3 1/2" 3 1/2" 4 1/8"
1 1/2" 3 3/8" 3 3/4" 3 3/4" 3 3/4" 3 7/8" 3 7/8" 4 5/8"
2" 4 1/8" 4 3/8" 4 3/8" 4 3/8" 5 5/8" 5 5/8" 5 3/4"
2 1/2" 4 7/8" 5 1/8" 5 1/8" 5 1/8" 6 1/2" 6 1/2" 6 5/8"
3" 5 3/8" 5 7/8" 5 7/8" 5 7/8" 6 5/8" 6 7/8" 7 3/4"
4" 6 7/8" 7 1/8" 7" 7 5/8" 8 1/8" 8 1/4" 9 1/4"
5" 7 3/4" 8 1/2" 8 3/8" 9 1/2" 9 3/4" 10" 11"
6" 8 3/4" 9 7/8" 9 3/4" 10 1/2" 11 3/8" 11 1/8" 12 1/8"
8" 11" 12 1/8" 12" 12 5/8" 14 1/8" 13 7/8" 15 1/4" 1/4"
10" 13 3/8" 14 1/8" 14 1/8" 15 3/4" 17 1/8" 17 1/8" 18 3/4" 6" 1 1/2"
12" 16 1/8" 16 5/8" 16 1/2" 18" 19 5/8" 20 1/2" 21 5/8"
14" 17 3/4" 19 1/8" 19" 19 3/8" 20 1/2" 22 3/4" -
16" 20 1/4" 21 1/4" 21 1/8" 22 1/4" 22 5/8" 25 1/4" - 3/8"
18" 21 1/2" 23 3/8" 23 1/4" 24" 25" 27 5/8" -
20" 23 3/4" 25 5/8" 25 3/8" 26 3/4" 27 3/8" 29 5/8" -
22" 26" 27 3/4" 27 1/2" 28 7/8" - - -
24" 28 1/8" 30 3/8" 30 1/8" 31" 32 7/8" 35 1/2" - 1/2"
30" 34 5/8" 37 3/8" 37 1/4" 38 1/8" - - -
36" 41 1/8" 43 7/8" 43 7/8" 44 3/8" - - -
All Sizes in Inches  -  Additional Sizes Available

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Product Specs


Paddle Orifice Plate Sizing Chart

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

Frequently Asked Questions


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