7 of 9
Specifications subject without notice
Edition: August 2017
Operating instructions BA 14b-02_EN
Caution
The valve must be inserted between the pipeline flanges with the butterfly disc in closed position.
Otherwise, the disc might be damaged and the valve could become leaky.
Note
The inside diameter of the mating flanges must leave sufficient room for the opened
butterfly disc to ensure that it cannot be damaged on swinging out.
See Table 2.
DN
80
100
150
200
250
300
350
400
500
600
NPS
3
4
6
8
10
12
14
16
20
24
BR14a ØDi
row 16
-
56
113
162
205
257
295
343
443
540
BR14b
BR14c
BR74b
ØDi
1
54
78
128
180
227
276
308
365
406
-
ØDi
2
row 20
22
50
82
122
151
217
252
308
446
-
row 25
35
60
96
153
210
256
283
308
446
-
row 16
-
-
118
166
217
260
301
348
454
-
BR14b-
Type HD
ØDi
1
65
87
137
187
233
280
324
371
-
-
ØDi
2
39
58
120
168
217
260
302
348
-
-
BR14p-
Type PSA
ØDi
1
-
87
135
183
233
-
-
-
-
-
ØDi
2
-
58
118
166
217
-
-
-
-
-
BR14t
ØDi
1
53
77
127
172
223
256
-
-
-
-
ØDi
2
44
59
119
170
221
267
-
-
-
-
DN
50
80
100
150
200
250
300
600
BR14e
ØDi
26
66
86
140
191
241
290
580
Table 2 – Minimum required inside diameter Di of the mating flanges
Make sure the arrow on the valve body corresponds with direction of pressure in the pipeline.
Note
In special cases, it may be necessary for the valve to be tightly shut against the pressure direction. The installation
in such special cases must be determined by the operator of the pipeline (e.g. to protect a pump).
On inserting the valve (and flange gaskets) into a ready mounted pipeline, keep a certain clearance between the pipeline
ends to ensure that all facings (and gaskets) remain undamaged.
Attention
For butterfly valves with re-adjustable stuffing box:
The necessary torques for tightening the adjustable stuffing box can taken for table 3.
The use of torque wrenches ensure, that the torques are reached.
DN [mm]
80
100
150
200
250
300
MA [Nm]
4
5
6
7
7
9
Table 3 – Tightening values for the adjustable stuffing box
