Water Supplies for Sprinkler Systems

Fire Sprinkler System Water Supplies

Fire Sprinkler Systems can only extinguish a fire with the application of water. This supply must be of sufficient quantity and have the flow and pressure as required by the system design and itís component parts.

It is therefore crucial that a sufficient quantity of water is available at the required pressure and flow, to be applied immediately to the fire on actuation of a fire sprinkler head.

The type of water supply will often depend on the flow and pressure requirement of the particular system; this is calculated at the design stage. See our design section for further information.

Types of Water Supplies

Direct connection to the water supplierís main.

For a small fire sprinkler system it may be possible to connect to the existing domestic supply within the property, in which case this method is the most cost effective method of supplying water to the fire sprinkler system.

In the event that the existing supply is not suitable, an application will need to be made to the water authority for a water supply upgrade. Triangle Fire Sprinkler Systems can assist in completion of this application, as the authority will want details of the flow and pressure required by the fire sprinkler system. They will then be able to determine that their water pressure is adequate and what diameter supply pipe will be required, typically 32 or 50mm.

The water authority will upgrade the supply from the town main to the boundary of the property. The pipe from this point will need to be installed by others.

This pipe will then be connected to our sprinkler system valve group, see valve groups section for further information. The water authority will require an approved check valve to be fitted close to the boundary.

Static Water Supply and Fire Pump

The alternative to the above is to have a static water storage supply, this would normally be a bespoke tank supplied by us. However, any other water supply can be considered, from a swimming pool to a rain water harvesting tank.

The capacity of the water tank will be dependent on the sprinkler system design.

A system in a domestic property must be capable of putting water on the fire for a minimum of 10 minutes and will typically require a storage capacity of between 500 and a 1000 litres.

For a residential system the run time must be 30 minutes and will require a minimum water storage capacity of 6000 litres.

Triangle fire systems can supply a range of tank sizes suitable for most locations, including triangular tanks that will fit under the eaves within the roof space.

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February 21, 2018
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