Alternate Valve Sprinkler Systems
As the name implies, the sprinkler system pipework is charged with water in the summer and with air in the winter when there is a danger of pipework freezing. When the system is charged with air, the operation of one or more sprinklers, activates the sprinkler control valve to rapidly allow the flow of water into the sprinkler distribution pipework were it is discharged through the open sprinklers onto the seat of the fire
The type of sprinkler nozzle, its discharge pattern and flow rate are all pre-determined by the hazard classification of the type of fire risk involved. When the system is set is charged with air, the minimum air pressure includes a safety factor to prevent potential water pressure fluctuations from forcing Main water into the system pipework
A typical Alternate Valve sprinkler system comprises of a control valve, sprinkler discharge heads and a dedicated water supply system.
The size of the valve, its flow rate, the system water supply pressure and air pressure are all determined by the size and type of fire risk involved.
Sprinkler Discharge Heads
The water discharged from the sprinkler is distributed by the deflector over the location of the fire. The area protected by each sprinkler is determined by the...more
Water Supply Systems
An essential part of all sprinkler systems is an adequate water supply. The “Town’s Main” is the most economical method of ensuring an adequate water ...more
