Anyone ever shine their 1W+ 445 on one of these?

saki302 said:

THe ones we use have some sort of copper slug that pops off when enough heat is applied to them. It takes a LOT of heat, i.e. fire, to get them to pop.

Our apartment heads have a water supply which goes to an alarm box which is monitored- if one pops, the alarm sounds and the fire alarm goes off, and the fire department reponds. If you get caught triggering a false alarm, God help you... (fire department charges are expensive!).

Each one triggers individually, unlike the movies. And the heads are quite expensive!

-Dave

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Those have a solder fillet between those slugs. Its melting point is very low. A laser (like a 1W 445) would not do it because of the mass and reflectivity of metal but you would be surprised at what will set them off.

A standard wet system uses heads that are independent of one another. Water flow through the pipe does trigger a flow switch that will set off the building fire alarm, however!

In any case I highly recommend nobody even think of trying this on a sprinkler head connected to a charged system!

Go to a bank or car dealer that has a bucketload of balloons or something.

Leodahsan said:

I think they activate by smoke rather than heat...

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Nope, that red piece in the picture melts (it's wax) when there is a fire and releases the water.

Indeed, you can activate these things by using a lighter or a laser, the result is exactly the same. The operation is very simple: when they get warm, they start spraying water, regardless of the source of heat.

And its a good thing too, since these will not fire if someone smokes a removed or burns an oven meal underneat one.

zdarkazn said:

Nvm then. Im not gonna do it then if theres bills..

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Teres only bills if you get caught ... *goes to find sprinkler*

alf said:

Teres only bills if you get caught ... *goes to find sprinkler*

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:tsk: :twak::spank::spank::twak: :tsk:

That one looks like a glass container that will break if the temperature gets too high*. They are local showers only.

There are systems with a low presure for monitoring and a flow detector to signal a presure rise high enough to burst the rest. That gives water over the whole firesection.

*around boiling point.

I'm of the opinion that a <2w laser will not set it off.
I wouldn't want to try it though.

-Tony

I agree with Toke ! there is a sensor that detects a drop in water pressure when one shower head is tripped, this sensor then turns on a pump that increases the pressure so as to burst other shower heads so that the whole area recieves water !


@ zdarkazn
So you wouldn't do it if there was bills to pay, I do believe you need a spanking:spank:
you obviously didn't get a good upbringing if that is all that is stopping you,
think twice befor destroing others property with out there permission :tsk: