215 / 292
213
Dixon Sanitary 2016
800.789.1718
Butterfly Valves
U
B51 Series Industrial Butterfly Valves
Dimensions (wafer)
A
B
D
C
F
G
H
E
E
F
A
G
B
C
D
H
I
1½" - 8" wafer
10" - 12" wafer
Part
Number
Size
A
B
C
D
E
F
G H
I
B5121E150WW-C
1½"
1.30 4-18 3.88 3.74 2.56 5.75 0.88 8.00
n/a
B5121E200WW-C
2"
1.69 4-18 4.75 3.82 3.15 5.94 0.88 8.00
n/a
B5121E250WW-C
2½"
1.81 4-18 5.50 4.45 3.62 6.89 0.88 8.00
n/a
B5121E300WW-C
3"
1.81 4-18 6.00 4.92 3.74 7.13 0.88 8.00
n/a
B5121E400WW-C
4"
2.50 4-22 7.50 6.14 4.49 7.87 1.00 10.60 n/a
B5121E500WW-C
5"
2.20 4-22 8.50 7.36 5.00 8.39 1.00 10.60 n/a
B5121E600WW-C
6"
2.20 4-22 9.50 8.46 5.47 8.90 1.00 10.60 n/a
B5121E800WW-C
8"
2.36 4-22 11.75 10.51 6.59 10.24 1.25 12.60 n/a
B5121E1000WW-G
10"
2.68 4-26 14.25 13.00 8.00 11.50 3.21 9.84 8.86
B5121E1200WW-G
12"
3.07 4-26 17.00 14.96 9.53 13.27 3.21 11.80 8.86
Dimensions (lug)
2" - 8" wafer
10" - 12" wafer
Part
Number
Size A
B
C D E
F
G H I
B5121E200LL-C
2"
1.69 4-5/18-11 UNC 4.75 5.95 3.15 5.94 0.88 8.00 n/a
B5121E250LL-C
2½"
1.81 4-5/18-11 UNC 5.50 6.97 3.62 6.89 0.88 8.00 n/a
B5121E300LL-C
3"
1.81 4-5/18-11 UNC 6.00 7.56 3.74 7.13 0.88 8.00 n/a
B5121E400LL-C
4"
2.05 8-5/8-11 UNC 7.50 8.35 4.49 7.87 1.00 10.60 n/a
B5121E500LL-C
5"
2.20 8-5/8-11 UNC 8.50 9.53 5.00 8.39 1.00 10.60 n/a
B5121E600LL-C
6"
2.20 8-5/8-11 UNC 9.50 11.02 5.47 8.90 1.00 10.60 n/a
B5121E800LL-C
8"
2.36 8-5/8-11 UNC 11.75 13.19 6.89 10.24 1.25 12.60 n/a
B5121E1000LL-G
10"
2.68 12-7/8-9 UNC 14.25 15.94 8.00 11.50 3.21 9.84 8.86
B5121E1200LL-G
12"
3.07 12-7/8-9 UNC 17.00 19.09 9.53 13.27 3.21 11.80 8.86
G
H
I
F
E
A
C
B
D
E
A
C
B
D
H
F
G
All dimensions are in inches unless otherwise noted. Engineering dimensions are available upon request.
Specifications are subject to change without notice.