4
15
½”
95
65
4 x 14
20
¾”
105
75
4 x 14
25
1”
115
85
4 x 14
40
1½”
150
110
4 x 18
50
2”
165
125
4 x 18
65
2½”
185
145
4 x 18
80
3”
200
160
8 x 18
100
4”
220
180
8 x 18
150*
6”
279
241
8 x 22
15
½”
89
60.3
4 x 16
20
¾”
98
70.0
4 x 16
25
1”
108
79.5
4 x 16
40
1½”
127
98.5
4 x 16
50
2”
152
120.5
4 x 19
65
2½”
185
145.0
4 x 19
80
3”
190
152.5
4 x 19
100
4”
229
190.5
8 x 19
-
6”
279
241.0
8 x 22
15
½”
95
70
4 x 15
20
¾”
100
75
4 x 15
25
1”
125
90
4 x 19
40
1½”
140
105
4 x 19
50
2”
155
120
4 x 19
65
2½”
175
140
4 x 19
80
3”
185
150
8 x 19
100
4”
210
175
8 x 19
-
6”
279
241
8 x 22
NEOTECHA
NTB-NTC BALL VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
6.5 Installation options
Ball valves can be equipped with various means
of operation e.g. with hand lever, handwheel,
electrical, pneumatic or hydraulic drive, or with
a drive linked to a position controller for NTC
control valves. The hand levers are supplied
complete with a notched plate which allows the
lever to be latched either in the end positions
only (version ZE) or in the end positions and
additionally in various intermediate positions
(version Z). In addition, the hand lever can be
provided with limit switches which indicate
“open” or “closed”.
For installation in exposed places, shaft
extensions in various lengths are available
for all sizes.
6.6 Bolted joints in the pipeline
All flange bolts must be used, even on
low-pressure systems. The specified tightening
toques for the bolts must always be adhered to.
6.7 Body variants
NTB and NTC ball valves have the same body
dimensions. The face-to-face and mounting
flange dimensions of the ball valve bodies
vary according to the various standards.
When used as an end of the line valve, it must
be secured in such a way that access to the
isolating valve is restricted when in service.
It should also be noted that when a valve is
used as the end valve of a pressurized system,
a dummy flange must be assembled.
DIMENSIONS
DN
D
Tk
n x d
mm
inches
mm
mm
mm
DIMENSIONS
DN
D
Tk
n x d
mm
inches
mm
mm
mm
DIMENSIONS
DN
D
Tk
n x d
mm
inches
mm
mm
mm
6.2 Dimensions of the mounting flanges for NTB-NTC ball and C valves DIN-PN 16
* DN 150 ball valve only as ANSI 6” version available
6.3 Dimensions of the mounting flanges for NTB-NTC valves ANSI B 16.10 class 150 (lbs)
6.4 Dimensions of the mounting flanges for NTB-NTC ball and C valves JIS-10K
* Ball valves DN 150 only as ANSI 6” version available
