contrary, fig.(b) is the case static characteristics

In case of pure inertia load system such as swing and travel at LS control, even by inching operation operating pressure reaches relief pressure level and acceleration force becomes too large. Therefore, operating feeling of inching becomes worse, in some case. For this improvement, we devised LSM

(Load Sensing Modulated) Spool, whose function is to control load's maximum pressure depending on lever stroke.