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Cast Iron Flanged Fittings
Class 125, Standard
™
Specifications
Reducing Laterals
All Standard or “Class 125” Cast Iron Flanged Fittings in sizes listed
are made to ASME and are marked 125 for pipe sizes 12 NPS and
smaller; 100 for pipe sizes 14 NPS and larger; and have plain faces.
Unless otherwise specified, cast iron flanges and fittings are drilled
and faced in accordance with ASME B 16.1.
Nominal
Pipe
Size
(NPS)
Size of
Outlet and
Smaller
(in)
Center
to Face
Run
(in)
Center
to Face
Branch
(in)
18
8
25
27 1 ⁄ 2
20
10
27
29 1 ⁄ 2
12
1
34 1 ⁄ 2
Anvil fittings in this section, up to 16 NPS inclusive, are included
in the “List of Inspected Fire Protection Equipment and Materials”
issued by the Underwriters’ Laboratories, Inc.
24
All Reducing Fittings in the sizes 18, 20 and 24 NPS can also be
supplied to Straight Size dimensions if specified.
Prices on application.
Coating
Flanged fittings are available both black and galvanized. Consult a
Anvil representative for available sizes.
Sizes
Size of all fittings scheduled indicates nominal inside diameter of
ports. Standard reducing elbows carry the same dimensions center-to-face as regular elbows of largest straight size.Sizes 18, 20 and
24 NPS reducing on the outlet in the following sizes are to short
body pattern and are to the dimensions shown as follows: All tees,
crosses and laterals reducing on the run only have the same center-to-face and face-to-face dimensions as a straight fitting of the
size of the largest opening. Sizes 16 NPS and smaller reducing on
the outlet have same dimensions as a straight fitting of the size of
the largest opening.
To order reducing companion flanges, specify threaded or
reduced size first, then the outside diameter of flange wanted. For
instance, if a reducing flange is required to connect a 5-inch pipe
to an 8-inch flanged valve or fitting having a 131⁄2-inch o.d. flange,
order: 5 x 131⁄2-inch standard reducing flange.
Dimensions
Bolt holes, for bolts smaller than 13⁄4 inches in diameter are drilled
1
⁄8 inch larger than bolt diameter; for bolts 13⁄4 inch and larger, bolt
holes are 1⁄4 inch larger than bolt diameter. Bolt holes straddle the
center line. Bolt holes are spot faced on order only.
Tolerances
Reducing Tees and Reducing Crosses
Nominal
Pipe
Size
(NPS)
Size of Outlet
and Smaller
(in)
Center
to Face
Run
(in)
Center to Face
Outlet or
Side Outlet
(in)
18
12
13
15 1 ⁄ 2
20
24
14
16
14
15
17
19
An inspection limit of plus or minus 1/32 inch shall be allowed on
all center to contact surface dimensions for sizes up to and including 10 NPS; plus or minus 1⁄16 inch on sizes larger than 10 NPS.
Inspection limit of plus or minus 1⁄16 inch shall be allowed on all
contact surface to contact surface dimensions for sizes up to and
including 10 NPS; plus or minus 1⁄8 inch on sizes larger than 10
NPS.The largest opening in the fitting governs the tolerance to be
applied to all openings.
❑
90° Straight
Elbow
Figure 801
1 1⁄ 2
4
2
1
4 ⁄2
2 1⁄ 2
Patterns are designed to produce castings having the wall thicknesses given in the tables. The wall thicknesses of the castings at
no point shall be less than 87.5% of the dimensions given.
Thickness
Flange
Weight
Min.
Diam.
Wall (lbs)
Flange
(in)
(in)
(in)
⁄ 16
5
6
5
⁄8
5
⁄ 16
5
7
11
⁄ 16
5
⁄ 16
3
1
5 ⁄2
1
7 ⁄2
3
3 1⁄ 2
6
8 1⁄ 2
13
4
6 1⁄ 2
9
15
5
7 1⁄ 2
10
15
6
8
11
1
1
1
⁄8
110
⁄4
175
⁄ 16
250
5
9
⁄ 16
Thickness
Flange
Size A
Weight
Min.
Diam.
Wall (lbs)
(NPS) (in)
Flange
(in)
(in)
(in)
1 1⁄ 2
2 1⁄ 4
14
2
1
2 ⁄2
19
2 1⁄ 2
9
⁄ 16
5
⁄ 16
8
6
5
⁄8
5
⁄ 16
12
3
7
11
⁄ 16
5
⁄ 16
17
1
3
⁄8
20
⁄ 16
27
1
⁄2
36
1
⁄2
45
⁄ 16
60
5
9
⁄8
24
3
3
7 ⁄2
3
⁄ 16
31
3 1⁄ 2
3 1⁄ 2
8 1⁄ 2
13
⁄ 16
⁄ 16
1
⁄2
41
4
4
9
15
⁄ 16
⁄ 16
1
⁄2
52
5
4 1⁄ 2
10
15
⁄ 16
68
6
5
11
1
8
1
5 ⁄2
1
13 ⁄ 2
1
1 ⁄8
5
⁄8
94
10
6 1⁄ 2
16
1 3⁄ 16
3
⁄4
145
12
7 1⁄ 2
19
1 1⁄ 4
⁄ 16
220
⁄4
⁄ 16
3
45° Straight
Elbow
Figure 802
7
9
8
9
13 ⁄ 2
1 ⁄8
5
10
11
16
1 3⁄ 16
3
12
12
19
1 1⁄ 4
13
C
A
Size A
(NPS) (in)
31 ⁄ 2
C
⁄4
7
⁄ 16
9
13
PF – 80
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