Selective Control Valves

Tractors are equipped with 300 Series selective control valves.

Besides these functions, control valves provide a lock function (A) which holds the control lever in the Raise or Lower position until it is moved manually.

Control valves also have an additional lock function (B), which holds the control lever in the Raise or Lower position until the pressure in the oil circuit has reached a predetermined value (e.g. when the remote control cylinder has reached its end position).

Neither locking function is activated in position (C). The control lever returns to neutral as soon as it is released.

Pressure connection (e.g. extending cylinder) can be connected to upper or lower coupler . A valve prevents loss of pressure by leakage (e.g. retracting cylinder) if the engine is shut off.

A-Manual Raise/Lower Lock Function
B-Preset Raise/Lower Function
C-No Detent Position

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