力士乐比例换向阀(22)

力士乐 比例换向阀

Type 4WRZ…-…/…

Pilot oil supply external

Pilot oil return external

In this version, the pilot oil is supplied from a separate pilot circuit (external).

The pilot oil return is not directed into the T channel of

the main valve, but is separately directed to the tank via

port Y (external).

Type 4WRZ…-…/…E…

Pilot oil supply internal

Pilot oil return external

In this version, the pilot oil is supplied via the P channel of the main valve (internal).

The pilot oil return is not directed into the T channel of

the main valve, but is separately directed to the tank via

port Y (external).

In the subplate, port X is to be closed.Type 4WRZ…-…/…ET…

Pilot oil supply internal

Pilot oil return internal

In this version, the pilot oil is supplied via the P channel of the main valve (internal).

The pilot oil is directly returned to channel T of the main valve (internal).

In the subplate, ports X and Y are to be closed.

Type 4WRZ…-…/…T…

Pilot oil supply external

Pilot oil return internal

In this version, the pilot oil is supplied from a separate pilot circuit (external).

The pilot oil is directly returned to channel T of the main valve (internal).

In the subplate, port Y is to be closed.

Pilot oil supply

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