Fire Hydrant System

Fire Fighting Hydrant Systems are the most commonly used systems, in many residential and industrial projects. If you have ever seen a “Red” color pipe, circulating around a building or factory, you have seen a Fire Hydrant Pipe. In most news clippings about a fire, you can see a fireman shooting water up to 8 stories high or more, that fire man is using the Fire Hydrant System. Such is the power of the Fire Hydrant System that water can be shot right up to 8 floor, directly into the fire.

It comprise the following primary components

* Water Supply & Storage

* Pipework & Valves

* Fire Brigade Booster

* Lay flat Fire Hose

* Block Plan

Wet Barrel Hydrant

Wet barrel fire hydrants are pressurized up to their outlets and each outlet can be operated individually. Easy-to-access outlet valves and nozzles work independently so that firefighters can add more dischargelines without causing the hydrant to shut down.

Number of outlets are determined by local zoning requirements and local fire department codes. Fire hydrants are designed with an operating valve for each outlet. Outlets can range in size from 2 ½ to 4 ½ inches in diameter. Outlets range from two to three outlets, in most cases.

Dry Barrel Hydrant

Dry barrel fire hydrants are not pressurized up to their outlets. Instead, there is only one internal valve, generally located at the base of the fire hydrant bury, that when opened, will press -urize all outlets at the same time.

There are three types of dry barrel hydrants:

* In a compression hydrant, a vertical stem works like a piston. It moves toward from a seat to close and open the main valve.

* In a toggle type of dry barrel, a vertical stem with two toggle arms rotates to open the main valve at the hydrant’s base.

* In a slide-gate hydrant, a threaded stem lifts or pushes down a gate that controls the main valve.

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