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What is the function of a sprinkler pressure valve in a fire protection system?
The function of a sprinkler pressure valve in a fire protection system is to regulate and control the water pressure within the system to ensure that the sprinklers operate effectively in case of a fire.
What creates water pressure in the house?
High water pressure from the street or well, but there's an exception: City water pressure (from the street) may need to have the pressure reduced to the home. Some homes have pressure regulators for this purpose, some do not. The same goes for well systems that use a pressure pump (an often a pressure tank); the outlet pressure is set so that the pressure to the home doesn't go too high or too low. An exception for homes with fire sprinkler systems. There is a check valve from the main water supply that feeds the fire sprinkler system. As temperatures drop at night, the water in the fire sprinkler pipes contracts slightly and additional water from the main water line goes into the fire sprinkler system. During the day, the water in the fire sprinkler pipes heats up and expands slightly, but has no where to go because of the check valve. This action can cause a very high pressure in the fire sprinkler pipes if there isn't also a pressure relief valve in the system. Numerous older homes do not have a pressure relief valve for the fire sprinkler system and risk having a pipe or joint burst. The bottom line: if you suspect that you have high water pressure in the home, consult a local plumber or building contractor for the appropriate solution.
How long before a water motor gong should go off in fire sprinkler system?
A water gong is typically arranged to alarm the instant water in the sprinkler system begins flowing, certainly within a few seconds, as the pressure drops on the sprinkler side, allowing water pressure to turn the clapper in the gong.
How do fire sprinkler systems put out fires?
Fire sprinklers have two major components that operate in response to a fire: the fire sprinkler heads which are connected via a series of pipes to a fire pumps. Water pressure is kept in the head by a series of valves in the pump. and is kept in the heads by little vials of colored liquid. During a fire, the liquid inside the sprinkler heads heats up and starts to expand, eventually causing the vial to burst. Water that was kept in the pipes pours out of the sprinkler heads. The water pouring out of the sprinkler heads causes the pressure in the fire pump to drop. In response, the pump kicks on and pumps more water from the municipal water supply to keep the sprinkler flowing. NOTE: this is how "wet pipe" fire sprinklers, the most common types of fire sprinklers, work. Other sprinklers (dry pipe, deluge and pre-action) are slightly different.
Why does a fire engine need to supply water to a fire sprinkler system?
A "fire department connection" (FDC) is often required on a sprinkler or standpipe system in case the ordinary supply of water fails to provide enough pressure for any reason. That way, a fire engine's pump can be used to pressurize the system with water from other sources.
What is the function of a sprinkler bell valve in a fire protection system?
A sprinkler bell valve in a fire protection system controls the flow of water to sprinkler heads. It opens when the system detects a fire, allowing water to flow and extinguish the fire.
What is the most common extinguishing material used in fire sprinkler systems?
Ordinary water is used in most fire sprinkler systems. Most fire sprinkler systems are connected directly to the same water you get from the fire hydrant, which is also often the source for drinking water as well.
Why is it important for the melting point of the solder in a fire sprinkler to be lower then its melting points of the parts it connects?
If the solder melted sooner than the surrounding parts, the line carrying the water to the sprinkler would lose pressure, resulting in the failure of the sprinkler system to deliver water.
fire sprinkler?
fire sprinkler
Which type of fire sprinkler system is installed wherever the system is subject to freezing?
To avoid problems of freezing water and broken pipes, a "dry sprinkler" system can be installed. The sprinkler heads can be sealed shut with temperature-sensitive valves, as in most wet systems, but the pipes are put under air pressure instead of water pressure, until one of the heads is activated by a fire. Water rushes into the system and sprays out of the open sprinkler head(s) within seconds, if all goes according to plan.
What is the most common extinguishing material used in fire systems?
Ordinary water is used in most fire sprinkler systems. Most fire sprinkler systems are connected directly to the same water you get from the fire hydrant, which is also often the source for drinking water as well.
What is a sprinkler?
An irrigation sprinkler is a device that applies water to plants, mimicking the effect of rain, as it is done in lawn, garden and agricultural irrigation. A fire sprinkler is a device that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been reached.
