SHUT-OFF VALVE FOR CISTERNS, TANKS AND SIMILAR

摘要

A shut-off valve (10) for cisterns, tanks and similar, in particular for cisterns and tanks transported or driven by articulated road vehicles and agricultural vehicles, includes a metallic body (12) with an upper opening (28) as well as inlet and outlet mouths of a fluid; the valve integrates two paired gates (22), connected between them and operable to be lifted and lowered with a lever and constituting the shut-off means of this fluid. A duct (30) is formed at least partly around the body (12) from which it is hydraulically independent, with opposed inlet and outlet openings (34,36) formed on respective and integral extensions (32) of the duct itself; the duct is formed integrally with the said valve body (12) upon its forming, and shares a common wall (12') with the valve body for conduction of heat from fluid in the duct to the interior of the valve body.