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Fitting Guide

Dimensions Weldolet® Reducing STD MSS SP97

Weldolet® Reducing STD

Dimensions NPS 1/2 to 24

NPS A B C
1/2 3/4
19.05
1.3/8
34.93
15/16
23.81
3/4 7/8
22.23

44.45
1.3/16
30.16
1 1.1/16
26.99
2.1/8
53.98
1.7/16
36.51

31.75
2.9/16
65.09

44.45
1.5/16
33.34
2.7/8
73
2
50.80
2
38.10

88.90
2.9/16
65.09
1.5/8
41.28
4.1/16
103.19
3
76.20
3
44.45
4.13/16
122.24
3.11/16
93.66
1.7/8
47.63
5.5/8
142.88
4
101.60
4 2
50.80
6
152.40

120.65
5
57.15
7.1/16
179.39
5.9/16
141.29
6 2.3/8
60.3

215.90
6.11/16
169.86
8
69.85
10.3/8
263.53
8.11/16
220.66
10 3.1/16
77.79
12.11/16
322.26
10.13/16
274.64
12 3.3/8
85.73
14.7/8
377.83
12.13/16
325.44
14
88.90
16.1/8
409.58
14.1/16
357.19
16 3.11/16
93.66
18¼
463.55
16.1/16
407.99
18 3.13/16
96.84
20½
520.70
18.1/16
458.79
20 4
101.60
22½
571.50
20
508.00
24 4.9/16
115.89
27.1/8
688.98
24.3/16
614.36
NPS A B C
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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