Flushing a fire hydrant - GIF

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Dec 11, 2021, 08:27 PM
Altair

Flushing a fire hydrant - GIF

Flushing a fire hydrant.

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Previously:

https://www.homemadetools.net/forum/...277#post192208
https://www.homemadetools.net/forum/...422#post154672
https://www.homemadetools.net/forum/...734#post190282
https://www.homemadetools.net/forum/...003#post171884
https://www.homemadetools.net/forum/...281#post146162
Dec 11, 2021, 10:26 PM
Frank S

And just think, if you are on city water that brown gunk will form at every cast iron hydrant connected to the mains throughout the city.
Dec 18, 2021, 05:37 PM
mwmkravchenko

Quote:

Originally Posted by Frank S

And just think, if you are on city water that brown gunk will form at every cast iron hydrant connected to the mains throughout the city.

I ran hydrants for a friend of mine for a week off and on one summer about 8 years ago. This is potable water. And this is nothing compared to what I have seen. Areas where the water lines are 60 and 80 years old are like tomato soup when you flow them hard. Kind of gives them a good flushing out. 8 inch lines are nothing to fool around with. If you turn the valves to quickly you actually shake the ground with the water hammering. And risk a lot of damage in the surrounding houses. The pressure spikes are huge.