Self-closing tap valve with magnetic actuator of auxiliary valve

摘要

The valve consists of a main valve controlled by a hand operated auxiliary valve (4). It has a delay mechanism for time-delayed closure. By operation of the handle against a return spring a magnetic circuit is opened and the delay mechanism is started. The auxiliary valve actuator has a piston (42) with an internal magnet (43) in a non-magnetic sleeve (41). The delay mechanism is attached to an outer permanent magnet (50), so that the piston is actuated by the magnet.