Valve with magnetic or magnetizable valve body has casing containing spring-elastic main valve member and pre-control member

摘要

The valve has a housing (30) in which a spring-elastic main valve member (70) and a pre-control valve member (86) can move under guidance. The housing has a main outlet aperture (8), a pre-control channel (53) and an induction aperture. The main outlet aperture and the pre-control channel are each facing the corresponding vacuum zone.