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ABOUT THE RTJ Orifice Holders |
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300-600# ANSI
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900# ANSI RATING |
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Size
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A.P.I.
Ring
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A
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B
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Approx.
Gap†
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A.P.I.
Ring
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A
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B
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Approx.
Gap†
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| 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 |
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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" |
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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. 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
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