Tech Tip
Virtually any plumbing configuration may be fabricated using the Wil-loc Carbon Steel Weld-On
Fittings. Please check columns A & K for correct pipe sizing. IPSO and ODA pipe may be used with
steel weld-on fittings.
When fabricating customized fittings, ensure there is enough length for the locking levers to fully
close without restriction. The minimum shank lengths are given on the flange specifications pages
of this catalog.
Black Steel
Weld-On
Fittings
Black Steel
Weld-On
Fittings
part number
weight (lbs.)
list price
steel weld-on sets
2" Black Ball/Skt Weld-On Set
3" Black Ball/Skt Weld-On Set
4" Black Ball/Skt Weld-On Set
5" Black Ball/Skt Weld-On Set
6" Black Ball/Skt Weld-On Set
8" Black Ball/Skt Weld-On Set
240 BWA2
240 BWA3
240 BWA4
240 BWA5
240 BWA6
240 BWA8
1.75
3.75
6.05
8.75
13.68
24.00
22.00
31.88
54.64
78.96
101.12
189.24
part number
weight (lbs.)
list price
steel weld-on balls
2" Ball/Male Black
3" Ball/Male Black
4" Ball/Male Black
5" Ball/Male Black
6" Ball/Male Black
8" Ball/Male Black
255 B2B
255 B3B
255 B4B
255 B5B
255 B6B
255 B8B
0.50
0.70
1.05
2.00
2.75
4.75
3.76
5.11
10.86
13.51
16.60
33.21
part number
weight (lbs.)
list price
steel weld-on sockets
2" Socket/Female Black
3" Socket/Female Black
4" Socket/Female Black
5" Socket/Female Black
6" Socket/Female Black
8" Socket/Female Black
257 S2B
257 S3B
257 S4B
257 S5B
257 S6B
257 S8B
0.40
0.80
1.00
2.00
2.95
4.03
5.05
6.88
13.07
21.53
26.39
51.07
part number
weight (lbs.)
list price
steel weld-on levers
2" Lever Locking Ring Black
3" Lever Locking Ring Black
4" Lever Locking Ring Black
5" Lever Locking Ring Black
6" Lever Locking Ring Black
8" Lever Locking Ring Black
274 LR2B
274 LR3B
274 LR4B
274 LR5B
274 LR6B
274 LR8B
0.98
1.88
4.70
6.00
9.00
13.00
13.21
19.89
30.71
41.90
58.11
104.96
part number
weight (lbs.)
list price
oil resistant o-rings
2" Oil Resistant O-Ring
3" Oil Resistant O-Ring
4" Oil Resistant O-Ring
6" Oil Resistant O-Ring
8" Oil Resistant O-Ring
285 OR2R
285 OR3R
285 OR4R
285 OR6R
285 OR8R
0.05
0.10
0.20
0.50
0.55
3.25
4.25
7.20
12.50
22.00
specs.
3.27
4.57
6.50
7.52
8.31
10.51
F
0.67
0.87
1.10
1.34
1.34
1.34
E
2.83
3.86
5.79
6.42
7.17
9.09
D
0.24
0.28
0.47
0.47
0.59
0.71
C
1.91
2.99
4.25
5.20
6.22
7.64
B
2.01
3.07
4.37
5.39
6.42
7.95
A
2" Weld-On
3" Weld-On
4" Weld-On
5" Weld-On
6" Weld-On
8" Weld-On
G H I
J K
M
1.22
1.46
2.32
2.13
2.05
2.99
2.44
3.48
5.20
5.98
6.69
8.66
0.37
0.51
0.59
0.71
0.75
0.75
1.91
2.99
4.25
5.20
6.22
7.64
2.01
3.07
4.37
5.39
6.42
7.87
L
0.28
0.55
0.59
0.67
0.75
0.67
1.97
3.19
4.41
5.39
6.10
7.87
N
2.17
2.87
4.21
3.78
4.06
5.00
O
2.76
3.86
5.71
6.26
7.09
9.06
Specifications to 1/100th of an inch • Specifications Subject to Change
Wil-loc B-Style Carbon Steel Weld-Ons
vacuum rating 30 inches hg
psi rating
2 & 3 inch = 290
4 – 8 inch = 175
G
I
N
O
J K
L
MH
E
C
A B
FD
C
A
B
E
weld-on set specs.
2" Weld-On Set
3" Weld-On Set
4" Weld-On Set
5" Weld-On Set
6" Weld-On Set
8" Weld-On Set
2.68
3.43
5.28
4.69
4.84
6.30
A B
C D E
6.10
7.87
11.81
11.22
12.60
15.35
7.09
9.25
10.83
11.42
13.39
13.19
3.35
3.54
6.69
5.51
6.30
9.06
4.92
7.09
9.25
10.83
11.81
13.98
Specifications to 1/100th of an inch • Specifications Subject to Change
D