A fire hydrant is an above-ground connection that provides access to a water supply for the purpose of fighting fires. The water supply may be pressurized, as in the case of hydrants connected to water mains buried in the street, or unpressurized, as in the case of hydrants connected to nearby ponds or cisterns. Every hydrant has one or more outlets to which a fire hose may be connected. If the water supply is pressurized, the hydrant will also have one or more valves to regulate the water flow. In order to provide sufficient water for firefighting, hydrants are sized to provide a minimum flow rate of about 250 gallons per minute, although most hydrants can provide much more.
Fire hydrants are a special fixed format pipe system connected to a reliable source of fire protection water supply and well equipped with water spray nozzles, for specific water distribution over the surface or area to be protected. In other words, Firefighting products just like, hydrants are basically above ground pumps that run off the pipeline for safety in urban or residential areas. The firefighters can connect their hoses to these hydrants to avail water for extinguishing the fire.
Today, the size and location of fire hydrants in an area affect not only the degree of fire protection but also the fire insurance rates. In many urban areas, the lowly fireplug is all that stands between the first spark and a multi-million-dollar fire loss.
We offer two types of Fire hydrants – the Dry Barrel type and the Wet Barrel type. They come with all the necessary local and international approvals and certifications.
In a wet-barrel design, the hydrant is connected directly to the pressurized water source. The upper section, or barrel of the hydrant is always filled with water, and each outlet has its own valve with a stem that sticks out the side of the barrel. In a dry-barrel design, the hydrant is separated from the pressurized water source by a main valve in the lower section of the hydrant below ground. The upper section remains dry until the main valve is opened by means of a long stem that extends up through the top, or bonet, of the hydrant. There are no valves on the outlets. Dry-barrel hydrants are usually used where winter temperatures fall below 32° F (0° C) to prevent the hydrant from freezing.
Unpressurized hydrants are always a dry barrel design. The upper section does not fill with water until the fire pumper applies a vacuum.