In 1883 Frederick Grinnell produced a sprinkler which achieved outstanding success. The introduction of Grinnell Sprinklers represented immeasurable technical progress and continuous research and development resulted in the Mather & Platt Grinnell Automatic Sprinkler becoming by far the most important of all fire protection devices.
For more than 118 years Mather & Platt supplied and installed Grinnell Automatic Sprinkler and Fire Alarm Systems in industrial and commercial premises all over the world. These installations have extinguished and controlled many thousands of fires and have proved by results that no other system can approach the efficient protection provided by automatic sprinklers.
SYSTEM - The system is designed to extinguish a fire in its early stages by the use of water and simultaneously sounding an alarm to summon help.
Pipework fitted with sprinklers at regular intervals is connected to a reliable water supply. Each sprinkler is an automatic heat-sensitive valve, which opens independently in the event of fire to discharge water on to the seat of the outbreak. Only the sprinkler or sprinklers affected by the fire operate, and the opening of any one sprinkler immediately sounds an alarm.
PROTECTION - There are two reasons for the low fire loss in sprinklered buildings. Firstly, the system is designed to automatically attack the fire in its incipient stage and either extinguish it before it has time to develop, or hold it in check. Secondly, as soon as a sprinkler operates, an automatic alarm sounds outside the building to give warning that a fire has broken out and to summon the necessary help to turn the water off once the fire is extinguished. The alarm can be relayed to a central control panel or to the local fire station.It is important to note that only the sprinkler(s) affected by the fire operates, thus restricting the damage by both fire and water.
This is in striking contrast to the development of many fire premises not equipped with sprinklers. Such fires, even when detected promptly, may rapidly grow to major proportions before hose streams can be brought to bear, thus requiring very large quantities of water for their extinguishment. Damage caused by both fire and water is then often disastrous.
THE OPERATION OF MODERN QUARTZOID BULB SPRINKLERS
When a fire occurs, the heat of the fire expands the liquid in the Quartzoid Bulb until, at its moment of operation, the bulb shatters into small pieces. The whole valve assembly is then thrown clear of the sprinkler yoke to leave a clear orifice discharging water on to the deflector, which distributes it over the fire area. Bulb Sprinklers are produced in a range of ratings to cover all the temperatures generally encountered.