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ABOUT THE RTJ Orifice Holders
For use in 'RTJ" orifice flange unions.
Available in carbon steel, stainless steel and other alloys.
Available in 300, 600, 900, 1500, 2500# ratings.


Integral Removal Plate

 

300-600# ANSI

 

900# ANSI RATING

Size

A.P.I. Ring

A

B

Approx. Gap†

A.P.I. Ring

A

B

Approx. Gap†

1/2" R-11 29/32" 4 1/4" 19/32" R-12 1" 4 1/4" 19/32"
3/4" R-13 1" 4 1/4" 19/32" R-14 1" 4 1/4" 19/32"
1" R-16 1" 4 1/4" 19/32" R-16 1" 4 1/4" 19/32"
1 1/2" R-20 1" 4 1/4" 19/32" R-20 1 1/16" 4 1/4" 19/32"
2" R-23 1 1/16" 4 1/4" 19/32" R-24 1 1/16" 5 1/4" 5/8"
2 1/2" R-26 1 1/16" 5 1/4" 19/32" R-27 1 1/16" 5 1/4" 5/8"
3" R-31 1 1/16" 5 1/4" 19/32" R-31   5 1/4" 17/32"
3 1/2" R-34 1 1/16" 4 1/4" 19/32"
4" R-37 1 1/16" 5 1/4" 19/32" R-37 1 1/16" 5 1/4" 17/32"
5" R-41 1 1/16" 6 1/4" 19/32" R-41 1 1/16" 6 1/4" 17/32"
6" R-45 1 1/16" 6 1/4" 9/16" R-45 1 1/16" 6 1/4" 17/32"
8" R-49 1 1/16" 6 1/2" 9/16" R-49 1 1/16" 6 1/2" 17/32"
10" R-53 1 3/16" 7 1/2" 23/32" R-53 1 3/16" 7 1/2" 21/32"
12" R-57 1 3/16" 7 1/2" 23/32" R-57 1 3/16" 7 1/2" 11/16"
14" R-61 1 3/16" 7 1/2" 23/32" R-62 1 7/16" 7 1/2" 23/32"
16" R-65 1 3/16" 7 1/2" 23/32" R-66 1 7/16" 7 1/2" 23/32"
18" R-69 1 3/16" 7 1/2" 23/32" R-70 1 9/16" 7 1/2" 3/4"
20" R-73 1 1/4" 7 1/2" 23/32" R-74 1 9/16" 7 1/2" 3/4"
24" R-77 1 7/16" 7 1/2" 13/16" R-78 1 7/8" 9 1/2" 25/32"

Handle-Type Ring-Joint Orifice plate holders are fitted with universal orifice plates and used with Ring-Joint orifice flanges, Style 560 plates are a one-piece integral plate seal. Style 590 plates are provided with hold-down screws to keep the universal plate in the holder. The oval ring form is standard. Non oval and snap ring sizes available. Universal orifice plates are sold separately.

Note: Style 560 Plate Holders 2" through 8" have a standard plate thickness of 1/4". Add .125" to dimensions "A" and Approx. Gap


Lambda Square, Inc 1-800-587-5423 Tel: 631-587-1000 Fax: 631-587-1011


Lambda Square, Inc. specializes
in the manufacture of differential pressure flow measurement equipment including venturi tubes, orifice plate and orifice flanges, meter tubes, orifice holding blocks, orifice restriction unions, sanitary plates, single and dual chamber fittings, ASME flow nozzles, manifolds, straightening vanes, elbow flow meters, seal pots and many other liquid, gas and steam control products.
Please contact Lambda Square with any questions concerning design and custom manufacture.
Copyright 1998-2018 Lambda Square, Inc. All rights reserved.



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