ES287609U - Automatic safety valve for gas installations (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Automatic safety valve for gas installations, which is designed to be mounted on the mouth of the corresponding gas supply pipe, and whose purpose is to cut off the gas flow when there is an increase in flow caused by a rupture or other cause accidentally, said valve being of the type of those formed from a cylindrical bushing with an external and toric seal to produce the seal in the assembly thereof on the end of the supply pipe, essentially being characterized in that the inner surface of the the bushing is affected by a pair of determinative stages of internal sections of different diameters, with the particular feature that the inner section with the largest diameter is terminated in a wing that folds inwards to form an internal wallet for retaining the mechanisms themselves, determining the concentric orifice to said walloon the corresponding entrance of the gas, while at the opposite end of the bushing is defined another concentric orifice for the exit of said gas; it being foreseen that the internal mechanisms are constituted by a plunger of quadrangular external contour and chamfered edges, which takes the form of a kind of bowl facing the mouth of the gas entrance, while on the base of such piston and externally same is fixed a lip seal determinative of the obturator itself, and on whose board supports one end of a coil spring that at its other end supports the step of smaller diameter, the latter practiced in proximity to the exit orifice of the cap. (Machine-translation by Google Translate, not legally binding)