Cara Kerja Merger-divider valve PC200-8 dan PC200-8MO Excavator komatsu

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Simak vidionya Sampai Tuntas

Function
1. This valve merges the pressurized oil (P1) and
(P2) from the two pumps or divides them
(enables them to flow to respective control
valve groups).
2. This valve merges or divides LS circuit pressures as well

When oil flowing from two pumps are merged [pump merge-divider valve changeover signals (IS1) and (IS2) are OFF]
Operation
1. Since drive signal (IS1) of the EPC valve for
the main spool is OFF, the output pressure of
the pump merge-divider EPC valve is 0 MPa {0kg/cm2}.
2. Main spool (1) is pressed to the right by spring (2). As a result, ports (E) and (F) are interconnected.
3. Pressurized oil (P1) and (P2) discharged from the two pumps merge at ports (E) and (F), and flow to the control valve which requires the oil.
4. Since drive signal (IS2) of the EPC valve for LS spool (3) is also OFF, LS spool (3) is
pressed to the right by spring (4). As a result,ports (A) and (B) are interconnected and ports
(B) and (C) are interconnected.
5.The LS pressures transmitted from respective control valve spools through LS circuits (5), (6),(7), and (8) are transmitted to all the pressurecompensation valves.

When oil flowing from two pumps are divided [pump merge-divider valve changeover signals (IS1

Operation
1. Since drive signal (IS1) of the main spool is ON, main spool (1) is moved to the left by the output pressure from the pump merge-divider EPC valve. As a result, port (E) is disconnected from port (F).
2.The pressurized oil from the two pumps are sent to respective control valve groups.
Pressure P1: To bucket, left travel, boom
Pressure P2: To swing, right travel, arm
3.When drive signal (IS2) of the EPC valve for LS spool (3) becomes ON, LS spool (3) is also moved to the left by the output pressure from the pump merge-divider EPC valve. As a result, ports (A) and (C)
are interconnected, and other ports remain disconnected from each other.
4. The LS pressures transmitted from respective control valve spools through LS circuits (5), (6), (7), and(8) are transmitted to respective control valves.

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