BC359778763459en-000201
VCB 06-EN
Overcenter Valve, Standard, Differential Area, Internal Drain, Port 1 Pilot
350 bar [5000 psi] • 60 l/min [16 US gpm]
DESCRIPTION AND OPERATION
This is a differential area overcenter valve, which is a pilot assisted relief with a free flow check. With the relief valve set at around 1.3 times the
maximum load induced pressure, the valve will prevent flow from taking place between ports 3 and 2. When pilot pressure is applied to port 1, the
valve will meter the flow from port 3 to 2 compensating for any change in pilot pressure due to over-running or unstable loads. Free flow takes place
from port 2 to port 3 through the check portion of the valve. These valves are ideal in most applications bringing stability, load holding, and hose
failure protection when the valve is mounted onto or into the actuator. The spring chamber is connected to the valve port 2, so any back pressure
will increase the pilot pressure required to keep the valve open and the pressure at which the valve will open as a relief valve.
SCHEMATIC
DIMENSIONS
mm [in]
PERFORMANCE CURVES
Motion Control Valves
1
2
3
Turn cw to increase
pressure setting
turn ccw to decrease
pressure setting
PERFORMANCE DATA
Rated pressure 350 bar [5000 psi]
Rated ow 60 l/min [16 US gpm]
Max total relief pressure 350 bar [5000 psi]
Max recommended load pressure
at maximum setting
270 bar [3900 psi]
Pilot ratio 4:1, 7:1
Leakage 10 drops/min @ at 70% of crack pressure
Weight 0.21 kg [0.47 lb]
Cavity NCS06/3
BC359778763459en-000201
VCB 06-EN
Overcenter Valve, Standard, Differential Area, Internal Drain, Port 1 Pilot
350 bar [5000 psi] • 60 l/min [16 US gpm]
SCHEMATIC
VCB 06-EN-DL (dual)
DIMENSIONS
mm [in]
Motion Control Valves
MODEL CODE
VCB06 - EN - 2 - A - 00 - B - 70
Pressure Range
Code Bar Psi
1 25-140 [360-2030]
2 70-210 [1015-3000]
3 105-350 [1520-5000]
Pilot Ratio
A - 7.1:1
B - 4.1:1
Seal Option
Code Seal kit
B-Buna-N 230000070
V- Viton 230000110
Housing
Code Ports & Material Housing Number Dual Housing Code Dual Housing Number
00 No housing
SE3B AL, 3/8 BSP NCS06-3-SE3B DL3B NCS06/3-DL3/8
SE4B AL, 1/2 BSP NCS06-3-SE4B DL4B NCS06/3-DL1/2
SE6S AL, #6 SAE NCS06-3-SE6S DL6S NCS06/3-DL6S
SES6S ST,#6SAE NCS06-3-SES6S
SE8S AL, #6 SAE NCS06-3-SE8S DL8S NCS06/3-DL8S
* Alum inum b odi es ar e to be u se d for p res sur es le ss t han 210 bar [3 00 0 ps i].
* Ad dit iona l ho usin gs av aila ble
Pressure Setting
Code Pressure setting in bar (10 bar increments within
specified Pressure Range)
XXX-No factory setting
Example:
Code Bar Psi
70 70 [1015]
C1
C2
V1 V2
15
30
35
70
[1.34]
[1.97]
[1.18]
[2.75]
[1.18]
[1.38]
34
34.5max 34.5max
50
16
22.5
25
[0.98]
[0.63]
[1.36] max[1.36] max
[0.89]
HOLES
Ø 6.5
C1 C2
V2V1
BSP 3/8 - SAE 6S
BSP 1/2 - SAE 8S
BSP 1/2 - SAE 8S
BSP 3/8 - SAE 6S
