2500 Series Flange Specs
All dimensions given in inches.
Dimensions and tolerances in accordance with ANSI B16.5.
*1/4 in. raised face included in dimensions Q, Y and YY.
**Bolt hole diameter 1/8 in. larger than bolt diameter.

 

Nom. Pipe Size

 O Q* R X No. and Dia. of Bolt Holes Bolt Circle Dia. YY* H J Y* r YV BB C T
½ 5.25 1.19 1.38 1.69 4-0.88 3.5 2.88 0.84
To
Be

S
p
e
c
i
f
i
e
d

by

P
u
r
c
h
a
s
e
r

 1.56 .12 1.56 0.9 0.93 1.12
¾ 5.5 1.25 1.69 2 4-0.88 3.75 3.12 1.05 1.69 .12 1.69 1.11 1.14 1.25
1 6.25 1.38 2 2.25 4-1.00 4.25 3.5 1.32 1.88 .12 1.88 1.38 1.41 1.38
1¼ 7.25 1.5 2.5 2.88 4-1.12 5.12 3.75 1.66 2.06 .19 2.06 1.72 1.75 1.5
1½ 8 1.75 2.88 3.12 4-1.25 5.75 4.38 1.9 2.38 .25 2.38 1.97 1.99 1.75
2 9.25 2 3.62 3.75 8-1.12 6.75 5 2.38 2.75 .31 2.75 2.46 2.5 2
2½ 10.5 2.25 4.12 4.5 8-1.25 7.75 5.62 2.88 3.12 .31 3.12 2.97 3 2.25
3 12 2.62 5 5.25 8-1.38 9 6.62 3.5 3.62 .38 3.62 3.6 3.63 2.5
4 14 3 6.19 6.5 8-1.62 10.75 7.5 4.5 4.25 .44 4.25 4.6 4.63 2.75
5 16.5 3.62 7.31 8 8-1.88 12.75 9 5.56 5.12 .44 5.12 5.69 5.69 3
6 19 4.25 8.5 9.25 8-2.12 14.5 10.75 6.63 6 .5 6 6.75 6.75 3.25
8 21.75 5 10.62 12 12-2.12 17.25 12.5 8.63 7 .5 7 8.75 8.75 3.75
10 26.5 6.5 12.75 14.75 12-2.62 21.25 16.5 10.75 9 .5 9 10.92 10.88 4.25
12 30 7.25 15 17.38 12-2.88 24.38 18.25 12.75 10 .5 10 12.92 12.94 4.75