About how much GPM is coming through the nozzle when its set to "flush"?
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Thread: Nozzle settings
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11-22-2009, 06:20 PM #1
Nozzle settings
"You can only live once, but if you do it right, once is enough"
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11-23-2009, 09:02 AM #2
What type of nozzle?
What brand of nozzle?
What type of hose?
What size hose?
Do yourself a favor....borrow a flowmeter and read it.
"This thread is being closed as it is off-topic and not related to the fire industry." - Isn't that what the Off Duty forum was for?
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11-23-2009, 09:16 AM #3
"The education of a firefighter and the continued education of a firefighter is what makes "real" firefighters. Continuous skill development is the core of progressive firefighting. We learn by doing and doing it again and again, both on the training ground and the fireground."
Lt. Ray McCormack, FDNY
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11-23-2009, 11:53 AM #4Forum Member
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On the old original Akron Turbojets, the smaller 30-60-95-125gpm ones, we flow tested them and got roughly 150gpm out of them at 100 psi at the nozzle while on flush. More water, but a crappy stream.
“The person who risks nothing, does nothing, has nothing, is nothing, and becomes nothing. He may avoid suffering and sorrow, but he simply cannot learn and feel and change and grow and love and live.” Leo F. Buscaglia
This place gets weirder and weirder every day...
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11-23-2009, 05:18 PM #5
Use a smoothbore nozzle and you wont have to worry about it.
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11-23-2009, 05:24 PM #6
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11-24-2009, 12:16 AM #7Banned
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11-24-2009, 03:34 AM #8Stay Safe
Bull
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11-24-2009, 07:09 AM #9Forum Member
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11-24-2009, 07:40 AM #10
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11-24-2009, 12:23 PM #11
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11-24-2009, 04:43 PM #12Forum Member
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WRONG! With most nozzles on flush if the nozzle pressure is maintained at whatever the nozzle calls for 50, 75, or 100 psi, the nozzle will actually flow MORE water than normal. This occurs because the space between the baffle and the nozzle itself increases, sometimes up to almost a half inch. If the correct nozzle pressure is maintained all you have done is make a higher gpm nozzle by increasing the amount of room for the water to exit the nozzle from. What does tend to happen though is the opening may be TOO big and the stream takes on more of a broken pattern than a true combination nozzle pattern.
How do I know this? Actual field trials using old style Akron Turbojets with the 30-60-95-125 gpm settings. The pattern would be more than adequate for rooms fires fought from the interior. Not such a good deal for reach needed for exterior streams.
By the way, we achieved flows in the 150 gpm range at 100 psi NP with the nozzle set on flush.“The person who risks nothing, does nothing, has nothing, is nothing, and becomes nothing. He may avoid suffering and sorrow, but he simply cannot learn and feel and change and grow and love and live.” Leo F. Buscaglia
This place gets weirder and weirder every day...
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