Rosemount 1495, Installation & Operation Manual

Page: 31 / 70

Reference Manual
00809-0100-4792, Rev CA
August 2010
4-5
Rosemount 1495, 1496
ASME B16.36-1996
Table 4-1. Class 300 Orifice Flanges, Welding Neck, Slip-On, and Threaded
(1)(2)
Nominal
Pipe
Size
Outside
Diameter of
Raised Face
R
Outside
Diameter
of Flange
O
Thickness
of Flange,
Min. C
Length Through
Hub
Diameter
of Hub X
Hub
Diameter
Beginning
of
Chamfer
(W.N.) A
Diameter of
Counter-
bore
Counter-
bore Depth
(From Face) Bore
Slip-On
and
Threaded
Y
2
Weld
Neck
Y
1
Back
Q
B
Face Q
F
F G
Slip-
On B
2
Weld
Neck
B
1
1 2.00 4.88 1.50 1.88 3.25 2.12 1.32 1.41 1.30 1.44 0.75 1.36
1
1
/
2
2.88 6.12 1.50 1.88 3.38 2.75 1.90 1.99 1.89 1.47 0.72 1.95
2 3.62 6.50 1.50 1.94 3.38 3.31 2.38 2.50 2.36 1.50 0.69 2.44
2
1
/
2
4.12 7.50 1.50 2.00 3.50 3.94 2.88 3.00 2.84 1.75 0.56 2.94
3 5.00 8.25 1.50 2.06 3.50 4.62 3.50 3.63 3.46 1.81 0.56 3.57
4 6.19 10.00 1.50 2.12 3.62 5.75 4.50 4.63 4.45 1.88 0.56 4.57
6 8.50 12.50 1.50 2.12 3.94 8.12 6.63 6.75 6.57 1.88 0.31 6.72
8 10.62 15.00 1.62 2.44 4.38 10.25 8.63 8.75 8.55 2.19 0.44 8.72
10 12.75 17.50 1.88 2.62 4.62 1262 10.75
See Note
(6)
.
10.88
12 15.00 20.50 2.00 2.88 5.12 14.75 12.75 12.88
14 16.25 23.00 2.12 3.00 5.62 16.75 14.00 14.14
16 18.50 25.50 2.25 3.25 5.75 19.00 16.00 16.16
18 21.00 28.00 2.38 3.50 6.25 21.00 18.00 18.18
20 23.00 30.50 2.50 3.75 6.38 23.12 20.00 20.20
24 27.25 36.00 2.75 4.19 6.62 27.62 24.00 24.25
Nominal
Pipe
Size
(1)(2)
Diameter of
Pressure
Connection
TT
Drilling Template Bolt Length
(3)(4)
Bolt
Circle
Number
of
Holes
Diameter
of Holes
Diameter
of Bolts
Machine
Bolts
Stud
Bolts
1
1
/
4
3.50 4 0.69
5
/
8
4.50 5.00
(5)
1
1
/
2
1
/
4
4.50 4 0.81
3
/
4
4.75 5.25
2
1
/
4
5.00 8 0.69
5
/
8
4.50 5.00
(6)
2
1
/
2
1
/
4
5.88 8 0.81
3
/
4
4.75 5.25
3
3
/
8
6.62 8 0.81
3
/
4
4.75 5.25
4
1
/
2
7.88 8 0.81
3
/
4
4.75 5.25
6
1
/
2
10.62 12 0.88
3
/
4
4.75 5.25
8
1
/
2
13.00 12 1.00
7
/
8
5.00 5.75
10
1
/
2
15.25 16 1.12 1 5.75 6.50
12
1
/
2
17.75 16 1.25 1
1
/
8
6.25 7.00
14
1
/
2
20.25 20 1.25 1
1
/
8
6.50 7.25
16
1
/
2
22.50 20 1.38 1
1
/
4
7.00 7.75
18
1
/
2
24.75 24 1.38 1
1
/
4
7.25 8.00
20
1
/
2
27.00 24 1.38 1
1
/
4
7.50 8.50
24
1
/
2
32.00 24 1.62 1
1
/
2
8.25 9.50
(1) Weld neck flanges NPS 3 and smaller are identical to Class 600 flanges and may be so marked.
(2) All other dimensions are in accordance with ASME B16.5.
(3) Bolt lengths include allowance for orifice and gasket thickness of 0.25 in. for NPS 1-12 and 0.38 in. for NPS 14-24.
(4) In conformance with ASME B16.5, stud bolt lengths do not include point heights.
(5) Threaded flanges are furnished in NPS 1-8 only.
(6) Bore diameter of weld neck flanges is to be specified by the purchaser.
See Not
e
(5)