The valve has axial height-opened input channels (30, 32, 35, 37) opened in a lateral surface of a cylindrical-symmetric recess (25) of a connection block (24), and control pins (29) rotating around a rotational axis (29a) and adapted in the recess. The control pins include passage channels (38-42), and are connected with each other, where two of the passage channels are connected with each other in the control pins with respect to the rotational axis along the height-opened input channels, and other two passage channels are connected with each other along the height-opened input channels. An independent claim is also included for a pumping system comprising a drive pump.
