PROTECTIVE VALVE, IN PARTICULAR AGAINST GEL DAMAGE, AND METHOD OF PROTECTING A WATER DISPENSING FACILITY AGAINST FREEZING DAMAGE

摘要

P This is a valve whose closure member 17 is adapted to control the passage 16 extending between an inlet tip 15A and an outlet tip 15D. / P P Next the invention, there is provided a pressure sensor 22, which, disposed in a housing 23 opening into the passage 16, is thus able to be sensitive to the pressure prevailing in a section of circuit extending from a check valve. back 24 arranged upstream to a stop member 12 arranged downstream, and which are controlled by the control means of the closure member 17. / P P Application, in particular, to the protection against freezing any water distribution system. / P