Valve unit for pneumatic system has U-shaped strip spring in intended end seat between pilot or pre-control valve and housing cap of main valve

摘要

The valve unit has a main valve and at least one auxiliary or pilot valve in the same housing as the main valve. A U-shaped strip spring (4) is located in the intended end seat between the pilot valve (5) and the housing cap (3) of the main valve. The spring is arranged with one arm on the pilot valve, and the other arm prestressed on a hollowed-out inner part of the housing cap.