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Sensor fire buy in Rawalpindi
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Sensor fire

Sensor fire

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Pakistan, Rawalpindi
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Description
Foam was first used to extinguish flammable liquid fires in the early 1900s when foam was generated by mixing solutions of sodium bicarbonate and aluminum sulphate containing a foam-stabilizing agent. This was known as `Chemical foam' and was still frequently used in extinguishers until quite recently.

Although larger systems were made for tank fire protection the sheer size of the systems and the problems of maintenance made them both costly and unsatisfactory.

The general use of foam began to grow rapidly in the 1930s with the development of foaming agents and foam generating equipment, which could produce foam in relatively simple equipment by entering air. The foam so produced was known as `mechanical foam' to distinguish it from `chemical foam'.

Unlike other extinguishing agents - water, dry chemical, CO2 etc… a stable aqueous foam can extinguish a flammable or combustible liquid fire by the combined mechanisms of cooling, separating the flame/ignition source from the product surface, suppressing the vapors and smothering. It can also secure for extended periods of time.
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