Wet Pipe Sprinkler Systems

The most common type of sprinkler system is the wet pipe system. Wet pipe systems constantly maintain pressurized water within the pipes. When the system is activated by heat from fire, water is discharged through a closed sprinkler head. As each sprinkler head is activated by heat, it will discharge water until the fire is under control or extinguished.

Common Applications:

  • Commercial buildings
  • Retail stores
  • Climate controlled storage areas

Why use wet pipe systems?

  • Reliability and simplicity – Wet pipe systems have fewer components than other systems, and are therefore less likely to malfunction. They are also reliable even when they remain unused, often for years at a time.
  • Affordability – Because they are simple to install and maintain, they are cost effective.
  • Easy alteration – Modifying current systems generally involves three steps:
    • Shutting off water supply.
    • Draining pipes.
    • Making alterations. Once work is complete, it is simple to re-pressurize and test.
  • Quick restoration – In the event of a fire, it takes minimal time to get the system restored. In general, all that is required is to replace any fused sprinklers and restore the water supply.

Limitations of wet pipe systems:

  • Ineffective when the environment has sub-freezing temperatures
  • Less reliable with the environment is subject to heavy impact that could cause leaks