Back flow preventing device e.g. for flow channel, has inlet channel and outlet opening channel and between channels flow controller is provided for controlling gas flow having high pressure loss

摘要

u The device has an inlet channel and an outlet opening channel. Between the channels a flow controller is provided for controlling a gas flow having a high pressure loss arranged and which can prevent a backflow. The controller has a flow container (11) having an inlet chamber (12) for the inlet channel (14) and a discharge opening chamber (13) for the outlet opening channel (15). Between the inlet chamber and the discharge opening chamber a partition (16) having a flow opening (17) is provided.