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How do Fire Collars Work ?

Promat fire resistant collars crush plastic pipes during exposure to fire.  But how do fire collars work?  In the event of fire, the plastic pipe will start to melt.  In the case of uPVC pipes this occurs at a temperature of approximately 70°C. Once the pipe starts to deform, the intumescent material in the Promat fire collar expands, closing off the plastic pipe.  This intumescent material forms an insulating barrier which reduces heat transfer between compartments and closes off any gaps to stop the spread of smoke, fire and gas.

Fire collars are designed to reinstate the integrity and insulating rating of the fire resistant element which has been penetrated by a building service.  Fire collars are suitable for installation in the various types of floors, walls and ceilings in which they have been tested.

Below is a video of a fire test.   Take note at how different types of plastic pipes melt at different times.   This reinforces the need for individual fire tests for each type of plastic pipe.   No two plastic pipe types burn at the same rate.   But how do fire collars work?  If your still not sure, watch the video below

There are different types of fire collars for different applications.   Our cast in fire collars allow for accurate set out of pipe work, and are more cost effective than retro fit collars when a large number are required.   We have a full range of fire collars for all types of building services including; plastic pipes, electrical cables, lagged copper pipes, copper pair coils and other general building services.

As the exclusive technical consultants for Promat, we are always working closely with Promat’s technical team to come up with new applications for our range of fire collar systems.   To stay up to date with the latest test results, you can subscribe to your monthly technical newsletter below

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24 May 2017