Fire Sprinklers Facts & Advice


Fire sprinkler system allows water flow under pressure to control fire. Previously they are used in factories and large industries. Now they are available in compact size to be used in small business concerns, homes etc.

There are different types of Fire sprinkler systems available in UK. here are the main types of fire sprinkler systems:

Wet pipe system

It’s composed of steel pipes filled with water. The water in the pipes is usually under moderate pressure; therefore, when the sprinkler head is activated, the pressurized water in the pipes is immediately released and as a result there is a faster reaction time.

In addition to providing faster reaction time the wet pipe system is also very simple and reliable. The system is also cheap, easy to install, and requires low maintenance.

Although, the system has these advantages, it’s not ideal for areas that are very cold. This is because the pipes tend to freeze in cold areas. The pipes are also not recommended in residential environments because they are prone to accidental leaks which can bring about flooding.

Dry pipe system

The pipes in this system are filled with air under pressure and the water is held back by the control valve which is usually located outside the protected area. When the sprinkler head is activated, the valve releases the compressed air through the sprinkler head. Once all the air has been released, water fills the system.

You should note that this system has a slower reaction time. The good side with the system is that it releases large amount of water; therefore, fire is put off fast.

Another good thing is that you don’t have to worry about flooding in case there is leakage in the pipes. These systems are used in areas where the wet and alternate systems can’t be used.

Alternate systems

These systems are usually filled with water for the summer period then when the season is over, they are drained down and filled with air for the winter period. These systems are ideal for underground car parks and other buildings that are not usually heated.

Pre-action systems

These are variations of the dry and wet pipe systems. These systems must be triggered twice before water is dispensed from the sprinkler head. The first trigger allows water into the pipes while the second trigger releases the water and pushes it to through the sprinkler in order to extinguish the fire.

The good side with this system is that it provides protection against false sprinkler head activation.

These are the main types of fire sprinkler systems. To ensure that you have bought the right system, you should ensure that you buy the systems from reputable stores.

Facts about fire sprinkler systems

  • Sprinklers Systems don’t false alert’ they will just work if there is a real fire.
  • Sprinklers save lives and property and are the main gadgets which can recognize a fire and sound the caution, call the fire brigade and stifle or control the fire.
  • 99% of fire are control by sprinklers alone.
  • There have been no numerous fire passings in the UK as a consequence of a fire in an abode with a working sprinkler framework.
  • Sprinkler systems needn’t bother with pumps or tanks if mains weight is satisfactory.
  • Maintenance expense is low and the framework have a long service life
  • Since the UK began to consider the possibility of sprinklered homes important in the late 1990’s, it has been evaluated that 35 lives have as of now been saved by the systems
  • Most fires in sprinkler protected buildings are extinguished by eight or fewer sprinkler heads operating.
  • For a very small cost an alarm switch can be built in to the system to call the fire service automatically should the sprinklers operate.
  • A typical residential sprinkler head will discharge 38 to 40 liters of water per minute compared to the 1000 liters per minute from the firefighter’s hose. As a general figure a sprinkler system will use between 1/100th and 1/1000th of the water that is used by the Fire Brigade/Department. This is a big difference and in itself can turn a potential disaster into a less costly inconvenience.
  • Generally copper and stainless steel pipework is used for domestic/residential systems; however, chlorinated polyvinyl chloride (CPVC) pipe is also suitable. The melting point of copper is around 1083oC – this means copper pipework will not be adversely affected by the heat of a domestic fire.

How Does The Sprinkler System Work?

Understanding how residential fire sprinklers work will help accept the fact that water damage from these systems aren’t as costly as the damage caused by unattended fires.

  • Each sprinkler head holds a glass container filled with liquid glycerin, which expands when heated.
  • A fire in the room heats the air, forcing it up towards the ceiling. Temperature of air continues to increase with rising flames.
  • When temperature reaches anywhere around 135-165 degrees Fahrenheit, the expanding glycerin causes the glass container to break, activates the sprinkler head, and opens a valve in the hidden plumbing to release a focused downward spray of water to extinguish the fire.

These systems are intended to quickly douse the fire, failing which they anyway buy enough time to respond to the emergency.


Leave a reply

Your email address will not be published. Required fields are marked *



We're not around right now. But you can send us an email and we'll get back to you, asap.


©2016 NW Fire Sprinkler Systems Website Designed by WilliCreative

NW Fire Sprinkler Systems, Unit 5C, Riverside House, Blackmarsh Road, Mochdre Business Park, Conwy, LL285HA 01492650491 | 07788 788766  Mon - Fri 9am - 7pm

Log in with your credentials

Forgot your details?