Abstract: A sprinkler winterization and drainage device and method for use in new and existing sprinkler systems that is capable of operation completely from the outside of a building. The devices and methods of the present invention may be used for sprinkler systems in residential homes, commercial or residential rentals, parks, schools and any other application where the main water supply conduit and main sprinkler supply line is located within the interior of a building. The device and method include a valve assembly including a valve located inside a building for shutting off the main sprinkler supply line from outside the building, while also providing for drainage of residual water in the valve assembly to the outside of the building. The device and methods of the present invention completely eliminate the necessity of entry into a building in order to perform sprinkler winterization.

Abstract: Device for locking a cowl with double security, comprising panel securing means, constituted by a plate integral with the panel and having a conical hole, as well as by a conical stop integral with the fixed structure and which enters the plate hole when the panel is in the closed position. Locking means are constituted by a locking bush or flange integral with the fixed structure, a support mounted on the panel, a bolt mounted in pivotable manner on the support and able to engage in the locking bush when the panel is in the closed position. Elastic means draw the bolt towards the disengaged position of the locking bush. A pawl mounted on the support locks the bolt in the engaged position.