Damping valve and shock absorber

A damping valve comprising:

• a partition wall body that is annular, is inserted into a cylindrical body, is radially positioned only by the cylindrical body, and has an annular outer circumferential valve seat protruding axially from axial one end and a port provided on an inner circumferential side of the outer circumferential valve seat;
• a rod that is inserted into an inner circumference of the partition wall body;
• a valve stopper that has an annular inner circumferential valve seat facing the one end of the partition wall body and having an outer diameter smaller than that of the outer circumferential valve seat;
• and
• an annular leaf valve that is interposed between the outer circumferential valve seat and the inner circumferential valve seat and is set to be open to both the inside and the outside to open and close the port, wherein
• the partition wall body includes an aligning portion that aligns the leaf valve with respect to the outer circumferential valve seat, and is radially movable with respect to the rod.