How a fire sprinkler works. (featuring broken glass and spatter.)04:33

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Published on October 30, 2017

I didn’t realise you could buy sprinkler heads on eBay until I was looking for something completely different. Being fond of workwear I was trying to find an American supplier who would ship a Carhartt R28 carpenters overall to the UK. I discovered that particular style of overall is very popular with mechanical trades because of the built-in tool pouch. That makes sense as standard tool belts are prone to slipping down your waist when loaded with tools and hardware.
Seeing images of sprinkler fitters wearing them then reminded me of how intriguing fire sprinkler heads are. Especially the mysterious little vial of coloured liquid. So it turns out that you can buy them from China on eBay from the electronic component suppliers. And they’re very cheap, probably because they’re a mass produced item. Apparently 40 million sprinkler heads are installed every year. It’s also interesting to note that buildings with sprinklers tend to have 96% of fires extinguished by the sprinklers alone.

With these accessories readily available it opens up the possibility of fitting your own home sprinkler system in critical areas like workshops, and just hooking it up to the cold water supply if it has good pressure.

I did get the overall. It’s really rugged compared to typical European workwear.

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