Water flow

Fire sprinkler water demand

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Fire sprinklers use more water than a typical home can provide

You need to determine if there is an adequate water supply for your fire sprinkler before starting your installation. Some contractors will take your money before they have verified the water available.

You can get a good idea of what your water supply is like using the following method:

Fully open your bathroom tap, and if you can fill up a 10-litre bucket in 1.5 minutes, you know the flow rate is approximately 10/1.5 = 6.66 Litres per minute.

The typical water flow in the UK household is 10 to 25 lpm. As Automist does not require more water than taken by a standard household appliance, it can be installed in the vast majority of homes without a water infrastructure upgrade. Automist must be connected to a reliable water supply, which delivers 8 litres per minute (lpm) flow at a minimum of 1.5 bar (150kPa) and a maximum of 16 bar (1.6 MPa) static pressure at the point of connection. The pump only requires only 6 lpm and 1 bar pressure, so a safety margin is embedded in this requirement.

All other systems on the market which take more than 12 litres will require either:
1)    Permission from the local water company for direct connection to the town main 
2)    Installation of a priority valve (~£300), or
3)    Installation of a large stored water tank (~£1200)