ES254702U - Antiretrocess valve for gas conduction (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Anti-reverse valve for gas pipes, characterized in that it comprises a cylindrical housing, whose bases are constituted by an inlet fitting and an outlet one, between whose fittings are mounted inside the housing, a chamber of smaller section, which supports and closes hermetically against the entrance fitting, and a porous cylindrical wall of metallic nature, also of smaller section than the housing, which supports hermetically against said chamber and the outlet fitting defining said chamber and cylindrical wall an annular space, with the wall of the housing and inside said cylindrical wall, following the chamber, a central space, through which runs axially a conduit that opens, on one side, in the aforementioned chamber, while the opposite reaches the vicinity of the unión of outlet, presenting the chamber at its base directed towards the inlet fitting, axial passage openings, around which said base defines internally a seat, against which a bypass valve is spring-loaded, while in its side wall it has radial outlet openings, below the valve, which open into the aforementioned annular space, the axial duct being hermetically sealed by a sliding stem, driven towards the valve by means of a compression spring and held in a position remote from said valve by an annular weld, of melting point lower than the temperature of the return flame, whose welding is located in the end portion near the output connector. (Machine-translation by Google Translate, not legally binding)