Tap of protection, in particular against the damage of the gel, and method of protection of an installation for dispensing water against the damage of the gel

摘要

It is a valve, the closure member 17 is able to control the passage 16 extending between an inlet nozzle 15a and an outlet coupling piece 15d. / p & & p & according to the invention, it is provided a pressure detector 22, which, disposed in a housing 23 emerging in the passage 16, is thus able to be sensitive to the pressure prevailing in a circuit section extending from a single - return 24 disposed upstream to a stop member 12 located downstream, and which are controlled by the control means of the closure member 17. / p & & p & application, in particular, to the protection against the gel of an installation for the distribution of water.