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Fittings Guide

Dimensions Weldolet® Size on Size XS MSS SP97

Weldolet® Size on Size XS

Dimensions NPS 1/2 to 24

NPS A B C D
1/2 3/4
19.05
1.3/8
34.93
15/16
23.81
5/8
15.88
3/4 7/8
22.23
1.5/8
41.28
1.3/16
30.16
13/16
20.64
1 1.1/16
26.99
2
50.80
1.7/16
36.51
1.1/32
26.19
1.1/4 1.1/4
31.75
2.7/16
61.91
1.3/4
44.45
1.3/8
34.93
1.1/2 1.5/16
33.34
2.7/8
73
2
50.80
1.5/8
41.28
2 1.1/2
38.10
3.1/2
88.90
2.9/16
65.09
2.1/16
52.39
2.1/2 1.5/8
41.28
4.1/16
103.19
3
76.20
2.7/16
61.91
3 1.3/4
44.45
4.13/16
122.24
3.11/16
93.66
3.1/16
77.79
3.1/2 2
50.80
5.3/8
136.53
3.7/8
98.43
3.9/16
90.49
4 2
50.80
6
152.40
4.3/4
120.65
4
101.60
5 2.1/4
57.15
7.1/8
180.98
5.9/16
141.29
5.1/16
128.59
6 3.1/16
77.79
8.7/8
225.43
6.11/16
169.86
6.1/16
153.99
8 3.7/8
98.43
10.5/8
269.88
8.11/16
220.66
7.5/8
193.68
10 3.1/2
88.90
12.7/8
327.03
10.7/16
265.11
9.3/4
254.00
12 3.15/16
100.01
15.3/16
385.76
13
330.20
11.3/4
304.80
14 4.1/8
104.78
16.11/16
423.86
14.5/16
363.54
13
330.20
16 4.7/16
112.71
18.7/8
479.43
16.1/2
419.10
15
381.00
18 4.11/16
119.06
21.1/8
536.58
18.5/8
473.08
17
431.80
20 5
127.00
23.3/8
593.73
20.13/16
528.64
19
482.60
24 5.1/2
139.70
27.7/8
708.03
25.1/8
638.18
23
584.20
NPS A B C D
General notes:
  • Dimensions: Top Row in Inches / Bottom Row in millimeters.
  • Root Gap - X - "Space" for welding the O'let is raised off the run pipe to establish proper
    weld gap by placing spacers, e.g. welding rods, under the fitting. This provides a uniform
    welding gap between the curvature of the run and base of fitting.
  • L = Dimensions Center Line of Run Pipe + X (Root Gap) + A (height of Weldolet).
  • Bevelled Ends ASME B16.9 and B16.25.
  • Source comes from Bonney Forge (except the sizes in millimeters).
  • Weldolet® is a registered name. Another often used name is Welding Outlet.
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