15
1/2”
4 x M12
A2-70
10
20
3/4”
4 x M12
A2-70
15
25
1”
4 x M12
A2-70
20
40
1 1/2”
4 x M16
A2-70
27
50
2”
4 x M16
A2-70
45
65
-
4 x M16
A2-70
60
80
3”
8 x M16
A2-70
60
100
4”
8 x M16
A2-70
45
-
6”
8 x M20
A2-70
85
15 1/2” 1/2” B7 9
20 3/4” 1/2” B7 13
25 1” 1/2” B7 18
40
1 1/2”
1/2”
B7
21
50 2” 5/8” B7 41
65 -
5/8” B7 52
80 3” 5/8” B7 52
100 4”
5/8” B7 38
- 6” 3/4” B7 68
SNB-SNC ball valves
Installation and Maintenance Instructions
Emerson reserves the right to change the contents without notice
page 5
Face-to-face body dimensions
DN
DIN-PN16
ANSI-150 lbs
JIS-10K
mm
inches mm mm mm
15 1/2” 130 108 130
20 3/4” 150 117 150
25 1” 160 127 160
40 1
1/2”
200 165 200
50 2” 230 178 230
65
2 1/2”
290
290 (DIN dimension)
290
80 3” 310 203 310
100
4” 350 229 350
150
6” 480 267 480
ANSI-dim. 229 with
ANSI-dim. 229 with
extension
extension
6.7.1. Face-to-face body dimensions for SNB-SNC ball valves
Recommended torques
DN
Bolts
Class
Torque
mm inches
Metric
Nm
6.9.1. Recommended tightening torques for SNB-SNC ball valves DIN-PN16 and JIS-10K
Recommended torques
DN
Bolts
Class
Torque
mm inches
UNC
lbf·ft
6.9.2. Recommended tightening torques for SNB-SNC ball valves ANSI B 16.10 class 150 (lbs)
6.8.
1. Check that the distance between flanges matches the face-to-face dimension of the ball valve.
Before installing the valve, spread the mounting flanges apart sufficiently using a suitable tool.
2. Remove the protective caps and position the ball valve in the pipeline. When installing a C valve,
check that the arrow points in the direction of flow.
3. Insert the fixing bolts.
4. Tighten the flange bolts hand-tight as the tool holding the flanges apart is gradually removed.
Make sure that the flanges remain correctly aligned.
5. Tighten all flange bolts in opposite pair sequence. Refer to following table for tightening torques.
6.9. Recommended tightening torques for mounting flange bolts
6.10. Final checks
- Checking the ball position as far as the fully open position
- Cleaning and flushing the pipeline before the first closure
- Repeated opening and closing of the ball valve, to ensure unrestricted movement of ball and
control shaft
