Technical Info |
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Flanges Dimensions |
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Dimensions for Class 300 Flanges
| Nom. Pipe Size (inches) |
O |
Q* |
R |
X |
No. of Holes |
Dia of Bolt Holes |
Bolt Circle Dia |
YY* |
H |
J |
Y* |
B |
R |
YV |
BB |
Z |
C |
T |
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| 1/2 |
95.3 |
14.2 |
35 |
38.1 |
4 |
15.7 |
66.5 |
52.3 |
21.3 |
15.7 |
22.4 |
22.4 |
3.0 |
22.4 |
22.9 |
9.7 |
23.6 |
15.7 |
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| 3/4 |
117.3 |
15.7 |
43 |
47.8 |
4 |
19.1 |
82.6 |
57.2 |
26.7 |
20.8 |
25.4 |
27.7 |
3.0 |
25.4 |
28.2 |
11.2 |
29.0 |
15.7 |
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| 1 |
124.0 |
17.5 |
51 |
53.8 |
4 |
19.1 |
88.9 |
62.0 |
33.5 |
26.7 |
26.9 |
34.5 |
3.0 |
26.9 |
35.1 |
12.7 |
35.8 |
17.5 |
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| 1 1/4 |
133.4 |
19.1 |
64 |
63.5 |
4 |
19.1 |
98.6 |
65.0 |
42.2 |
35.1 |
26.9 |
43.2 |
4.8 |
26.9 |
43.7 |
14.2 |
44.5 |
20.6 |
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| 1 1/2 |
155.4 |
20.6 |
73 |
69.9 |
4 |
22.4 |
114.3 |
68.3 |
48.3 |
40.9 |
30.2 |
49.5 |
6.4 |
30.2 |
50.0 |
15.7 |
50.5 |
22.4 |
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| 2 |
165.1 |
22.4 |
92 |
84.1 |
8 |
19.1 |
127.0 |
69.9 |
60.5 |
52.6 |
33.3 |
62.0 |
7.9 |
33.3 |
62.5 |
17.5 |
63.5 |
28.4 |
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| 21/2 |
190.5 |
25.4 |
105 |
100.1 |
8 |
22.4 |
149.4 |
76.2 |
73.2 |
62.7 |
38.1 |
74.7 |
7.9 |
38.1 |
75.4 |
19.1 |
76.2 |
31.8 |
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| 3 |
209.6 |
28.4 |
127 |
117.3 |
8 |
22.4 |
168.1 |
79.2 |
88.9 |
78.0 |
42.9 |
90.7 |
9.7 |
42.9 |
91.4 |
20.6 |
92.2 |
31.8 |
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| 31/2 |
228.6 |
30.2 |
140 |
133.4 |
8 |
22.4 |
184.2 |
81.0 |
101.6 |
90.2 |
44.5 |
103.4 |
9.7 |
44.5 |
104.1 |
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104.9 |
36.6 |
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| 4 |
254.0 |
31.8 |
157 |
146.1 |
8 |
22.4 |
200.2 |
85.9 |
114.3 |
102.4 |
47.8 |
116.1 |
11.2 |
47.8 |
116.8 |
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117.6 |
36.6 |
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| 5 |
279.4 |
35.1 |
186 |
177.8 |
8 |
22.4 |
235.0 |
98.6 |
141.2 |
128.3 |
50.8 |
143.8 |
11.2 |
50.8 |
144.5 |
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144.5 |
42.9 |
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| 6 |
317.5 |
36.6 |
216 |
206.2 |
12 |
22.4 |
269.7 |
98.6 |
168.4 |
154.2 |
52.3 |
170.7 |
12.7 |
52.3 |
171.5 |
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171.5 |
46.0 |
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| 8 |
381.0 |
41.1 |
270 |
260.4 |
12 |
25.4 |
330.2 |
111.3 |
219.2 |
202.7 |
62.0 |
221.5 |
12.7 |
62.0 |
222.3 |
|
222.3 |
50.8 |
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| 10 |
444.5 |
47.8 |
324 |
320.5 |
16 |
28.4 |
387.4 |
117.3 |
273.1 |
254.5 |
66.5 |
276.4 |
12.7 |
95.3 |
277.4 |
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276.4 |
55.6 |
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| 12 |
520.7 |
50.8 |
381 |
374.7 |
16 |
31.8 |
450.9 |
130.0 |
323.9 |
304.8 |
73.2 |
327.2 |
12.7 |
101.6 |
328.2 |
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328.7 |
60.5 |
|
| 14 |
584.2 |
53.8 |
413 |
425.5 |
20 |
31.8 |
514.4 |
142.7 |
355.6 |
To Be |
76.2 |
359.2 |
12.7 |
111.3 |
360.2 |
|
360.4 |
63.5 |
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| 16 |
647.7 |
57.2 |
470 |
482.6 |
20 |
35.1 |
571.5 |
146.1 |
406.4 |
To Specified by Purchaser |
82.6 |
410.5 |
12.7 |
120.7 |
411.2 |
|
411.2 |
68.3 |
|
| 18 |
711.2 |
60.5 |
533 |
533.4 |
24 |
35.1 |
628.7 |
158.8 |
457.2 |
88.9 |
461.8 |
12.7 |
130.0 |
462.3 |
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462.0 |
69.9 |
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| 20 |
774.7 |
63.5 |
584 |
587.2 |
24 |
35.1 |
685.8 |
162.1 |
508.0 |
95.3 |
513.1 |
12.7 |
139.7 |
514.4 |
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512.8 |
73.2 |
|
| 24 |
914.4 |
69.9 |
692 |
701.5 |
24 |
41.1 |
812.8 |
168.1 |
609.6 |
106.4 |
616.0 |
12.7 |
152.4 |
616.0 |
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614.4 |
82.6 |
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Technical Info 
