The servo actuated valve has housing (2), which has a main valve seat (9) between an inlet (7) and a discharge opening (8) and is locked by a buckle unit (14). A pilot valve (28) is provided, which has an auxiliary valve seat in a pilot valve chamber, which is lockable with another buckle unit. The latter buckle unit has an anchor (29), which is arranged in the pilot valve chamber. A hydrodynamic tank (17) is provided in the housing.
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