SPRING-LOADED NON-RETURN VALVE FOR A VEHICLE HYDRAULIC-POWER BRAKE SYSTEM, AND VEHICLE POWER-BRAKE SYSTEM HAVING THE NON-RETURN VALVE

A non-return valve for a vehicle hydraulic-power brake system. The non-return valve has a valve-seat part in the form of an apertured disk, onto which is pressed a valve cage in which a valve ball is disposed as shut-off member and a helical compression spring is disposed as valve spring. A bowl-shaped filter is secured in a depression in the valve-seat part opposite the valve cage.