High pressure fluid canon for fire extinguishers etc includes pressure compensator coupled to valve to reduce shift pressure by compensating force which pressure in propellant gas chamber exerts on valve

摘要

The high pressure fluid canon includes a propellant gas chamber (24) and valve member (11) for opening a connection between this and the fluid chamber. A pressure compensator (35) coupled to the valve member is used to reduce the switch pressure in the switch chamber (26) by compensating at least partly the force which can be exerted on the valve through the pressure prevailing in the propellant gas chamber. to produce the required switching pressure, part of the propellant gas in the chamber can be diverted into the switch chamber.