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Valley-polarized currents can be generated by local straining ofmulti-terminal graphene devices. The pseudo-magnetic field created by thedeformation allows electrons from only one valley to transmit and a current ofelectrons from a single valley is generated at the opposite side of the locallystrained region. We show that valley filtering is most effective with bumps ofa certain height and width. Despite the fact that the highest contribution tothe polarized current comes from electrons from the lowest sub-band,contributions of other sub-bands are not negligible and can significantlyenhance the output current.

Strain controlled valley filtering in multi-terminal graphene structures