X820-21PA-001N12 METSO

(measuredatv-32mm'/s andt-40°C)

The rating of the valve is limited by the flow forces actingon the spool, These depend on the system pressure andthe max.flow,The specified values refer to the use as a4-way valve in which the load ports A and B are connected.For all spools with P-T circulation in center position thedata refer to the worst case that A and B are blocked.

In different applications,e.g.use of only one working portA or B, flow volume transmissions in differential cylinders etc.the conditions for the flow forces are differentand therefore the switching limits may be lower in someCases.

Description:

Features

Low pressure drop at high flow rates due to optimizedflow paths in body and spool design.

Mounting configuration according to l50 4401-03.

Initial positionindication by inductive position switch(see page 10-12).

Change of solenoid coil is fast and simple without riskofleakape.

Electrical single connection of solenoids according to150 4400/DIN 43650.

The surface of the valve housingis phosphatized andthe actuating solenoids are palvanized.

Description

Moog's direct operated X820 Series Directional ControlValve conforms to CETOP 03standard interface.lt isdesigned to be manifold mounted,orusedin conjunctionwith the stack valve system.

TheX820 directional control valve consists basically ofthe longitudinal slide spool, the housing and the corre.sponding actuating element.The spool is shifted by useofsolenoids allowing oil under pressure to flow from portP to either port A or Band subsequently connecting thealternate port to the tank(T).Deenergizing the operatorallows the spring to return the spool to the center.

The manual override option allows manual operation ofthe spool.

Every valve is tested prior to delivery.

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