Abstract: A fire hydrant system relating to protection of a water supply from contamination. The fire hydrant system includes a barrel adapted to communicate at least indirectly with a water supply; a nozzle extending from the barrel; a hydrant valve adapted to controllably regulate communication between the barrel and the water supply; a valve actuator adapted to allow actuation of the hydrant valve; a nozzle cap adapted to at least close off the nozzle opening; and a hydrant shoe in communication with the water supply, the hydrant shoe comprising a backflow prevention assembly, wherein water can flow from the water supply through the hydrant shoe into the barrel at an open position of the backflow prevention assembly disc, and wherein media cannot enter the water supply via the barrel when the backflow prevention assembly disc is in a closed position.

Abstract: A fire hydrant system relating to protection of a water supply from contamination. The fire hydrant system includes a barrel adapted to communicate at least indirectly with a water supply; a nozzle extending from the barrel; a hydrant valve adapted to controllably regulate communication between the barrel and the water supply; a valve actuator adapted to allow actuation of the hydrant valve; a nozzle cap adapted to at least close off the nozzle opening; and a hydrant shoe in communication with the water supply, the hydrant shoe comprising a backflow prevention assembly, wherein water can flow from the water supply through the hydrant shoe into the barrel at an open position of the backflow prevention assembly disc, and wherein media cannot enter the water supply via the barrel when the backflow prevention assembly disc is in a closed position.

Abstract: A fire hydrant system relating to protection of a water supply from contamination. The fire hydrant system includes a barrel adapted to communicate at least indirectly with a water supply; a nozzle extending from the barrel; a hydrant valve adapted to controllably regulate communication between the barrel and the water supply; a valve actuator adapted to allow actuation of the hydrant valve; a nozzle cap adapted to at least close off the nozzle opening; and a hydrant shoe in communication with the water supply, the hydrant shoe comprising a backflow prevention assembly, wherein water can flow from the water supply through the hydrant shoe into the barrel at an open position of the backflow prevention assembly disc, and wherein media cannot enter the water supply via the barrel when the backflow prevention assembly disc is in a closed position.

Abstract: A transient voltage surge suppressor (TVSS) device, suitable for commercial/industrial applications, incorporates diagnostic circuitry. The TVSS provides seven modes of protection for three phases of a typical electrical service. A surge panel can protect against large current transients. The large current-handling capability stems from passing a large amount of surge current from one layer of a multilayer printed circuit to another through the use of arrays of plated through holes.

Abstract: The present invention provides a hydrant locking device to be used in conjunction with a fire hydrant having locking nuts which includes, a base arm having a first base arm portion and a second base arm portion. A top arm extends upwardly from the base arm and includes a top arm cap for covering at least one of the locking nuts. The first base arm portion is detachably secured to the second base arm portion, wherein the base arm and the top arm are secured to the fire hydrant when the first base arm portion is secured to the second base arm portion.

Abstract: The present invention provides a hydrant locking device to be used in conjunction with a fire hydrant having locking nuts which includes, a base arm having a first base arm portion and a second base arm portion. A top arm extends upwardly from the base arm and includes a top arm cap for covering at least one of the locking nuts. The first base arm portion is detachably secured to the second base arm portion, wherein the base arm and the top arm are secured to the fire hydrant when the first base arm portion is secured to the second base arm portion.