Wet Fire Sprinkler System Diagram

Wet fire sprinkler systems are by far the most common the simplest and the most affordable systems to install.

Wet fire sprinkler system diagram.

8 fire department connection. How they work a wet fire sprinkler system means that at all times the overhead fire sprinkler piping is filled with pressurized water. A wet system is used in areas that can be maintained above 40 f 4 c. Why choose a pre.

The system provides fixed fire protection using piping filled with pressurized water supplied from a dependable source at all times. A fire sprinkler system is an active fire protection method consisting of a water supply system providing adequate pressure and flowrate to a water distribution piping system onto which fire sprinklers are connected. Wet pipe sprinkler system october 15 2008 page 3 i. In a wet pipe fire sprinkler system the most common type in residential buildings cold water is stored under pressure in the pipes and is released immediately by sprinkler heads when the predetermined heat level is reached.

Ease of modification wet pipe fire sprinkler systems are advantageous since modifications involve shutting down the water supply draining pipes and making alterations. This is because no equipment other than the sprinkler heads are required to operate. Following the work the system is pressure tested and restored. Wet systems use automatic sprinkler heads attached to piping containing water and connected to a water supply.

Upon alert the pre action valve releases water flows in and the system essentially becomes a wet pipe system. Otherwise known as an fdc or siamese connection since there are two inlets on the connection this connection is located on the exterior of the building. A combination manual wet standpipe and sprinkler system may have sufficient pressure to supply sprinklers. A wet system as defined in nfpa 13 is a sprinkler system employing automatic sprinklers attached to a piping system containing water and connected to a water supply so that water discharges immediately from sprinklers opened by the heat from a fire2.

Wet systems are the most common and reliable types of sprinkler systems. Connection used by the fire department to pump water into the fire sprinkler or standpipe system to supplement the building s water supply. Although historically only used in factories and large commercial buildings systems for homes and small buildings are now available at a cost effective price. The pre action valve will only activate when an independent fire detection system detects a fire.

System description wet systems are the simplest and most common type of sprinkler system installation with relatively few components figures 1 and 2. Manual wet systems keep water in the system at all times but are not backed up by a pump. Now that water is on deck one or more individual sprinkler heads need to release to engage and discharge water.