Abstract:
Die Erfindung beschreibt einen Hydrant (1) mit einem Ventilgehäuse (4) mit einer Absperreinrichtung (14) mit zumindest einem mit einer Betätigungseinrichtung (21) verstellbaren Absperrelement (17, 20), z.B. Ventilkolben (19), Schwimmkugel (16) und mit einem im Ventilgehäuse (4) angeordneten, einen Strömungsquerschnitt (30) für ein Medium. (3) umgrenzenden Flanschdichtring (35). Auf dem Ventilgehäuse (4) ist eine Hydrantensäule (8) mit einem Hydrantenkopf (9) mit zumindest einer Auslassarmatur (10) für das Medium (3) aufgesetzt. Das Ventilgehäuse (4) ist in einer zu einer Strömungsrichtung des Mediums (3) senk recht verlaufenden Ebene geteilt ist und durch ein Basisgehäuse (6) mit der Absperreinrichtung (14) und ein durch eine Flanschanordnung (44) des Flanschdichtringes (35) distanziertes Aufsatzgehäuse (7) mit einer Führungsanordnung (27) für das Absperrelement (17, 20) gebildet.
Abstract:
A backflow prevention system that helps prevent contamination of potable water distribution systems from backflow at fire hydrant connections.
Abstract:
An infrastructure monitoring system and method include multiple communications devices. At least one communications device is coupled to an element of the infrastructure.
Abstract:
The present invention relates to methods and devices for retrofitting fire hydrants with additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include a replacement hydrant body having an enlarged diameter portion that can be installed to replace an existing hydrant body. The replacement hydrant body can include a secondary valve comprising a seat, biasing structure, and a restriction member to close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open.
Abstract:
The present invention relates to methods and devices for retrofitting fire hydrants with additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include a seat and elongated member for efficient and cost effective installation and cooperation with valves, which close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open.
Abstract:
An infrastructure monitoring system and method include multiple communications devices. At least one communications device is coupled to an element of the infrastructure.
Abstract:
A hydrant comprising; a hollow body (1) enclosing a valve, the hollow body terminating at one end in an inlet flange (2) configured for connection to a riser pipe, and at an opposing end in an outlet (3) positioned axially directly above the inlet providing an unobstructed first bore from inlet to outlet when the valve is opened, a second bore connecting with the first bore receiving a shaft (6) which carries an operating means for operating opening and closure of the valve through axial or rotational movement of the shaft, the valve mechanism comprising a plug (10) configured to sit onto a seat (11) provided around the body wall defining the first bore, a fixed hinged linkage (7,9 ) linking the plug with the shaft configured such that on axial movement of the shaft or mount carried thereon, the plug is caused to be moved between a position where it is fully engaged with the seat and a position where the bore is unobstructed.
Abstract:
The present invention relates to a fire hydrant having, a primary valve (602) and a secondary valve (604). An actuator rod (608) is provided to open and close the valves whereby the actuator rod has an additional structure for allowing air to reach the area of the fire hydrant below the secondary valve. Various embodiments include an actuator rod with openings (626) and hollow portions (624) and configured to provide air from the area of the hydrant above the secondary valve to the area of the hydrant below the secondary valve. In some embodiments of the present invention, a check valve (700) is provided with the actuator rod that is adapted to prevent the flow of fluid in at least one direction.
Abstract:
The present invention relates to methods and devices for providing a fire hydrant actuator rod with additional structure for allowing air to reach the area of a fire hydrant below a secondary valve. Various embodiments include an actuator rod with openings and hollow portions and configured to provide air from the area of a hydrant above the secondary valve to the area of a hydrant below a secondary valve. In some embodiments of the present invention, a check valve is provided with the actuator rod that is adapted to prevent the flow of fluid in at least one direction.
Abstract:
Disclosed is a main valve for a hydrant including an internal rigid structure including a top surface, a bottom surface, and a locating feature, the locating feature defined in a one of the top surface and the bottom surface; and an outer shell at least partially enclosing the internal rigid structure and interacting with the locating feature.