RE 95528/05.2016,
Bosch Rexroth AG
Counterbalance valve |
BVD/BVE Series 52
Characteristic curves for counterbalance spool 33
5
Characteristic curves for counterbalance spool 33
▼ Pressure differential at the outlet (via valve spool) D´
D
or C´
C working port at rear (38)
100
200
300
400
500
600 650
0
12
18
22
20
16
10
2
4
6
8
14
Flow
q
V
[l/min]
Pr
es
sur
e differ
ential
∆p
[bar]
▼ Pressure differential at the inlet (via check valve) C
C´ or D
D´
working port at rear (38)
100
200
300
400
500
600 650
0
12
16
10
2
4
6
8
14
Flow
q
V
[l/min]
Pr
es
sur
e differ
ential
∆p
[bar]
The above parameters are based on:
▶ Oil viscosity
ν
= approx. 21 mm
2
/s
▶ Oil temperature
ϑ
= 50 °C
▶ Counterbalance spool fully open
Notice
▶ Pressure
Δp
of approx. 20 to 50 bar is normal for deter-
mining the maximum flow in winch drives.
▶ If the desired flow (pressure difference) does not
match the counterbalance spool described here,
please contact us.
▼ Pressure differential D´
D or C´
C (via valve spool)
with working port offset by 90° (31)
100
200
300
400
500
600 650
0
12
18
22
20
16
10
2
4
6
8
14
Flow
q
V
[l/min]
Pr
es
sur
e differ
ential
∆p
[bar]
▼ Pressure differential C
C´ or D
D´ (via check valve),
with working port offset by 90° (31)
100
200
300
400
500
600 650
0
12
16
10
2
4
6
8
14
Flow
q
V
[l/min]
Pr
es
sur
e differ
ential
∆p
[bar]
