SERVO VALVE AND INJECTION VALVE

摘要

A sealing sleeve is pretensioned toward the sealing edge (54) by means of a first spring (56). In addition, a first shut-off channel is assigned to the servo valve and is hydraulically coupled to the recess (44) of the outer plunger (40) in the area inside the sealing edge (54) of the sealing sleeve. In addition, a second shut-off channel is provided that is hydraulically coupled to the recess (38) of the valve body (16) in the area outside the sealing edge (54) of the sealing sleeve (52). A leakage space (14) is assigned to the servo valve, is hydraulically coupled to or decoupled from the first shut-off channel depending on the position of the inner plunger (48), and is hydraulically coupled to or decoupled from the second shut-off channel depending on the position of the outer plunger (40). The outer plunger (40) and the inner plunger (48) each have a contact surface that are provided for being acted upon by a valve actuating device.