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    Response
    Re: Water system for fire monitors and ECS
    Graham the black pump does in fact provide more than enough water through a
    3mm pipe
    . The pump operates at 6 - 12 volts and at 12v I think its too powerful so at 7.2volt it seems about right. I have also tried modifying the output by inserting small twisted shims fitted down the centre of the pipe this gives the effect of spreading the jet into a more convincing fire jet rather than a simple straight sided jet. Ill try and capture this in a video.
    4 years ago by mturpin013
    Response
    Re: Water system for fire monitors and ECS
    These 12v pumps are pretty good Graham, just tried my one (ex cooling pump from the ST) and it will squirt water 3ft plus from a
    3mm pipe
    . Quite cheap on Ali Express so 1 per monitor would be all you need (or 1 for 2 with say 2mm pipe. Feeds in and out need to be 3mm+ to reduce friction. I ran it on a 3s to try it with a 5mm inlet pipe. If you run it at 12v and you reduce the outlet to 2mm you will probably double the distance. If you decide to try one of these, make sure it is this model with the ribbed front plate shown, as they have a higher output than some others (1.5-2L/min. Found these work quite well as air pumps also, just a bit noisier (some advertise them as air pumps and others as water pumps- same thing. JB
    4 years ago by jbkiwi


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