| 摘要 |
The multi-circuit protection valve (3) for each circuit has an overflow valve (30,30',30") with limited backflow, and each overflow valve has a movable wall (31,31',31") which separates an inflow chamber (35,35',35") from a backflow chamber (34,34',34") with a spring (33,33',33"). A bypass conduit (37,37',37") is provided, which bridges over the movable wall between the inflow chamber and the backflow chamber of at least of one overflow valve. An electrically controllable magnet valve (38,38',38") is arranged in each bypass conduit of each overflow valve with its own venting connection (39,39',39").
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