4 breakaway torques, 5 pressure-temperature-diagram, Breakaway torques – Richter BVIP/F Series Ball Valves (ISO/DIN) User Manual
Page 5: Pressure-temperature-diagram, Series bvi/f, bvip/f
Series BVI/F, BVIP/F
Page 5
9520-090-en
Revision 10
TM 8361
Edition 10/2011
1.4 Breakaway torques
Test medium: water 68 °F (20
°
C)
Higher breakaway torques may occur with other
media.
PFA lined ball/stem unit
DN
p in bar
B 3
6
10
16
max.
admin.
[mm]
[Nm]
[Nm]
[Nm]
[Nm]
[Nm]
25
8
8
8
10
70
40
20
20
20
25
225
50
25
25
25
30
225
80
50
50
62
83
500
100
80
80
92
120
500
150
200
230
270
315
2200
Ceramic Ball Al
2
O
3
DN
p in bar
B 3
6
10
16
max.
admin.
[mm]
[Nm]
[Nm]
[Nm]
[Nm]
[Nm]
25
10
10
10
12
32
40
20
20
20
25
80
50
25
25
25
30
120
80
60
60
72
95
250
100
90
130
150
200
350
150
350
400
580
770
1200
1 in-lb = 0.112 Nm
1.5 Pressure-temperature-diagram
A special material is used for the ball/stem unit for
operating limits under – 10 °C to – 29 °C.
When used in the minus temperature range,
the regulations applicable in the country in
question must be observed.
Ball/stem unit
Al
2
O
3
ball