120
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forged steel fittings
Forged Steel Unions
Class 6000 Threaded & Socket-Weld
Figure 2127:
Threaded Union
Size
A
B
C*
D
E
F
Unit Weight
NPS
DN
in
mm in
mm in
mm in
mm in
mm in
mm lbs
kg
1
⁄
4
8 1
27
⁄
32
47 1
11
⁄
16
43
1
25
31
⁄
32
25
7
⁄
16
11 0.555
0.575
14
15 0.60 0.27
3
⁄
8
10
2
51 1
15
⁄
16
49 1
3
⁄
16
30 1
3
⁄
32
28
7
⁄
16
11 0.690
0.710
18
18 0.80 0.36
1
⁄
2
15 2
5
⁄
16
59 2
3
⁄
8
60 1
15
⁄
32
37 1
5
⁄
32
29
9
⁄
16
14 0.855
0.875
22
22 1.40 0.63
3
⁄
4
20 2
7
⁄
16
62 2
25
⁄
32
71 1
25
⁄
32
45 1
3
⁄
8
35
9
⁄
16
14 1.065
1.085
27
28 2.00 0.91
1
25 2
7
⁄
8
73 3
23
⁄
64
85 2
7
⁄
32
686 1
45
⁄
64
43
9
⁄
16
14 1.330
1.350
34
34 3.10 1.41
1
1
⁄
4
32
3
76 3
23
⁄
32
94 2
35
⁄
64
65 1
7
⁄
8
48
9
⁄
16
14 1.675
1.695
43
43 5.90 2.68
1
1
⁄
2
40 3
1
⁄
2
89 4
27
⁄
64
112 3
1
⁄
16
78 2
1
⁄
16
52
11
⁄
16
17 1.915
1.935
49
49 6.60 2.99
2
50 4
1
⁄
8
105 5
15
⁄
64
133 3
9
⁄
16
90 2
3
⁄
8
60
7
⁄
8
22 2.406
2.426
61
62 10.50 4.76
Figure 2128:
Socket-Weld Union
Size
A
B
C*
D
E
F
Unit Weight
NPS
DN
in
mm in
mm in
mm in
mm in
mm in
mm lbs
kg
1
⁄
4
8 1
27
⁄
32
47 1
11
⁄
16
43
1
25
31
⁄
32
25
7
⁄
16
11 0.555
0.575
14
15 0.60 0.27
3
⁄
8
10
2
51 1
15
⁄
16
49 1
3
⁄
16
30 1
3
⁄
32
28
7
⁄
16
11 0.690
0.710
18
18 0.80 0.36
1
⁄
2
15 2
5
⁄
16
59 2
3
⁄
8
60 1
15
⁄
32
37 1
5
⁄
32
29
9
⁄
16
14 0.855
0.875
22
22 1.40 0.63
3
⁄
4
20 2
7
⁄
16
62 2
25
⁄
32
71 1
25
⁄
32
45 1
3
⁄
8
35
9
⁄
16
14 1.065
1.085
27
28 2.00 0.91
1
25 2
7
⁄
8
73 3
23
⁄
64
85 2
7
⁄
32
686 1
45
⁄
64
43
9
⁄
16
14 1.330
1.350
34
34 3.10 1.41
1
1
⁄
4
32
3
76 3
23
⁄
32
94 2
35
⁄
64
65 1
7
⁄
8
48
9
⁄
16
14 1.675
1.695
43
43 5.90 2.68
1
1
⁄
2
40 3
1
⁄
2
89 4
27
⁄
64
112 3
1
⁄
16
78 2
1
⁄
16
52
11
⁄
16
17 1.915
1.935
49
49 6.60 2.99
2
50 4
1
⁄
8
105 5
15
⁄
64
133 3
9
⁄
16
90 2
3
⁄
8
60
7
⁄
8
22 2.406
2.426
61
62 10.50 4.76
*“C” dimension measures across octagon corners or across the diameter as applicable. The 2
1
⁄
2
" NPS
(65 DN)
and 3" NPS
(80 DN)
– 3000 and 2" NPS
(50 DN)
– 6000 sizes have octagonal male and female
ends; the other sizes are round.
Manufactured to MSS standard practice SP83
(Class 6000 by method of MSS SP83)
A
D
E
F
C
B
Socket-Weld
A
C
B
Threaded