Technical Info |
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Flanges Dimensions |
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Dimensions for Class 900 Flanges
Nom. Pipe Size (inches) |
O |
Q* |
R |
X |
No. of Holes |
Dia of Bolt Holes |
Bolt Circle Dia |
YY* |
H |
J
To
Be
Specified
by the purchaser |
Y* |
B |
r |
YV |
BB |
Z |
C |
T |
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| 1/2 |
120.7 |
22.4 |
35.1 |
38.1 |
4 |
22.4 |
82.6 |
60.5 |
21.3 |
- |
31.8 |
22.4 |
3.0 |
31.8 |
22.9 |
23.6 |
22.4 |
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| 3/4 |
130.0 |
25.4 |
42.9 |
44.5 |
4 |
22.4 |
88.9 |
69.9 |
26.7 |
35.1 |
27.7 |
3.0 |
35.1 |
28.2 |
29.0 |
25.4 |
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| 1 |
149.4 |
28.4 |
50.8 |
52.3 |
4 |
25.4 |
101.6 |
73.2 |
33.5 |
41.1 |
34.5 |
3.0 |
41.1 |
35.1 |
35.8 |
28.4 |
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| 1 1/4 |
158.8 |
28.4 |
63.5 |
63.5 |
4 |
25.4 |
111.3 |
73.2 |
42.2 |
41.1 |
43.2 |
4.8 |
41.1 |
43.7 |
44.5 |
30.2 |
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| 1 1/2 |
177.8 |
31.8 |
73.2 |
69.9 |
4 |
28.4 |
124.0 |
82.6 |
48.3 |
44.5 |
49.5 |
6.4 |
44.5 |
50.0 |
50.5 |
31.8 |
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| 2 |
215.9 |
38.1 |
91.9 |
104.6 |
8 |
25.4 |
165.1 |
101.6 |
60.5 |
57.2 |
62.0 |
7.9 |
57.2 |
62.5 |
63.5 |
38.1 |
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| 21/2 |
244.3 |
41.1 |
104.6 |
124.0 |
8 |
28.4 |
190.5 |
104.6 |
73.2 |
63.5 |
74.7 |
7.9 |
63.5 |
75.4 |
76.2 |
47.8 |
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| 3 |
241.3 |
38.1 |
127.0 |
127.0 |
8 |
25.4 |
190.5 |
101.6 |
88.9 |
53.8 |
90.7 |
9.7 |
53.8 |
91.4 |
92.2 |
41.1 |
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| 4 |
292.1 |
44.5 |
157.2 |
158.8 |
8 |
31.8 |
235.0 |
114.3 |
114.3 |
69.9 |
116.1 |
11.2 |
69.9 |
116.8 |
117.6 |
47.8 |
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| 5 |
349.3 |
50.8 |
185.7 |
190.5 |
8 |
35.1 |
279.4 |
127.0 |
141.2 |
79.2 |
143.8 |
11.2 |
79.2 |
144.5 |
144.5 |
53.8 |
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| 6 |
381.0 |
55.6 |
215.9 |
235.0 |
12 |
31.8 |
317.5 |
139.7 |
168.4 |
85.9 |
170.7 |
12.7 |
85.9 |
171.5 |
171.5 |
57.2 |
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| 8 |
469.9 |
63.5 |
269.7 |
298.5 |
12 |
38.1 |
393.7 |
162.1 |
219.2 |
101.6 |
221.5 |
12.7 |
114.3 |
222.3 |
222.3 |
63.5 |
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| 10 |
546.1 |
69.9 |
323.9 |
368.3 |
16 |
38.1 |
469.9 |
184.2 |
273.1 |
108.0 |
276.4 |
12.7 |
127.0 |
277.4 |
276.4 |
71.4 |
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| 12 |
609.6 |
79.2 |
381.0 |
419.1 |
20 |
38.1 |
533.4 |
200.2 |
323.9 |
117.3 |
327.2 |
12.7 |
142.7 |
328.2 |
328.7 |
76.2 |
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| 14 |
641.4 |
85.9 |
412.8 |
450.9 |
20 |
41.1 |
558.8 |
212.9 |
355.6 |
130.0 |
359.2 |
12.7 |
155.4 |
360.2 |
360.4 |
82.6 |
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| 16 |
704.9 |
88.9 |
469.9 |
508.0 |
20 |
44.5 |
616.0 |
215.9 |
406.4 |
133.4 |
410.5 |
12.7 |
165.1 |
411.2 |
411.2 |
85.9 |
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| 18 |
787.4 |
101.6 |
533.4 |
565.2 |
20 |
50.8 |
685.8 |
228.6 |
457.2 |
152.4 |
461.8 |
12.7 |
190.5 |
462.3 |
462.0 |
88.9 |
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| 20 |
857.3 |
108.0 |
584.2 |
622.3 |
20 |
53.8 |
749.3 |
247.7 |
508.0 |
158.8 |
513.1 |
12.7 |
209.6 |
514.4 |
512.8 |
91.9 |
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| 24 |
1041.4 |
139.7 |
692.2 |
749.3 |
20 |
66.5 |
901.7 |
292.1 |
609.6 |
203.2 |
616.0 |
12.7 |
266.7 |
616.0 |
614.4 |
101.6 |
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Technical Info 
