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Dresser Style 138 Couplings for Plain-End Cast-Iron Pipe Sizes


Style 138 Couplings for Plain-End Cast-Iron Pipe Sizes
Nonimal Pipe Sizes Pipe O.D. Range Inches Middle Ring Thikness, Length BOLTS Number, Diameter and Length Approx. Weight Each Coupling MAX. W.P. PSI
2
3
4
4		 2.38 - 2.56
3.74 - 4.02
4.74 - 5.06
4.74 - 5.06		 .188 x 5
.188 x 5
.229 x 5
.229 x 7		 3- 5/8 x 8 1/4
4- 5/8 x 8 1/4
4- 5/8 x 8 1/4
4- 5/8 x 10 3/4		 12
18
15.8
17.8		 250
250
250
250
6
6
8
8
10
12		 6.84 - 7.16
6.84 - 7.16
8.99 - 9.36
8.99 - 9.36
11.04 - 11.46
13.14 - 13.56		 1/4 x 5
1/4 x 7
1/4 x 5
1/4 x 7
3/8 x 7
3/8 x 7		 5- 5/8 x 8 1/4
5- 5/8 x 10 3/4
6- 5/8 x 8 1/4
6- 5/8 x 10 3/4
7- x 10 3/4
8- 5/8 x 10 3/4		 21
21.5
27
30
47.6
54.4		 250
250
250
250
250
250

 
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