5
15
½”
4 x M12
A2-70
10
20
¾”
4 x M12
A2-70
15
25
1”
4 x M12
A2-70
20
40
1½”
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
½”
½”
B7
9
20
¾”
½”
B7
13
25
1”
½”
B7
18
40
1½”
½”
B7
21
50
2”
⅝”
B7
41
65
-
⅝”
B7
52
80
3”
⅝”
B7
52
100
4”
⅝”
B7
38
-
6”
¾”
B7
68
NEOTECHA
NTB-NTC BALL VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
FACE-TO-FACE BODY DIMENSIONS
DN
DIN-PN 16
ANSI-150 lbs
JIS-10K
mm
inches
mm
mm
mm
15
½”
130
108
130
20
¾”
150
117
150
25
1”
160
127
160
40
1½”
200
165
200
50
2”
230
178
230
65
2½”
290
290 (DIN dimension)
290
80
3”
310
203
310
100
4”
350
229
350
150
6”
480
ANSI-dim. 229
with extension
267
480
ANSI-dim. 229
with extension
6.7.1 Face-to-face body dimensions for NTB-NTC ball valves
RECOMMENDED TORQUES
DN
Bolts
metric
Class
Torque
mm
inches
Nm
6.9.1 Recommended tightening torques for NTB-NTC ball valves DIN-PN 16 and JIS-10K
RECOMMENDED TORQUES
DN
Bolts
Class
Torque
mm
inches
UNC
lbf·ft
6.9.2 Recommended tightening torques for NTB-NTC ball valves ANSI B 16.10 class 150 (lbs)
6.8 Step-by-step valve installation
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
