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6. CUT-OFF VALVE
1)
STRUCTURE
SECTION A - A
PS
A3
SECTION C - C
1
Cut-off valve
2
Relief valve
3
Check valve
2)
OPERATION
When the pump works, the oil under the pressure flows into P port.
The oil in P port is stored in the accumulator on A3 port.
As the pressure on P line rises to 150bar, the cut off valve(1) starts cut-offing and the oil in the P
port is unloaded. The pressure on P line goes down 120bar by the minute leakage from valve and
other factors.
At this pressure, the cut-off valve starts cuting.
This process is repeated in the regular period of 30~40 seconds.
T
PS1
P
SECTION B - B
A1
A2
T1
B2
B1
B
SECTION D - D
4
Coil
5
Solenoid valve
4-24
3
C
5
D
A
C
1
HYDRAULIC SYMBOL
B1
A3
PS
B
PS1
4
B
D
A
B
2
A1
A2
B2
T1
P
T
7707BS06
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