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