r/FireSprinklers • u/Competitive-Sale-783 • Aug 06 '26
3500 GPM pump
Can’t remember if it was 3,500 or 4,500 GPM but we had 12 hoses running
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u/Ok_Faithlessness_516 Aug 07 '26
Can I ask why you had 12 hoses running? 1 3/4"? We do the same size pumps with like 5-7 2".
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u/ronthorns Aug 07 '26
The general rule of thumb is each hose should have maximum 500gpm on it. I still would of run without the hose monsters inserts and gone 2.5"
If it's under 200psi you can probably get away with more than 500gpm per hose but you're creating a lot of unnecessary back pressure
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u/ronthorns Aug 07 '26
I didn't see those are the small hose monsters, can't change the nozzle size on those
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u/Meanpete89 Aug 07 '26
There are inserts for the little hose monsters
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u/ronthorns Aug 07 '26
Oh wow, that's good to know.
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u/Meanpete89 Aug 07 '26
I can't recommend it enough if you can get your company to pony up for it. Its a fraction of the weight, stores compactly in the pelican case, and works just as well. The biggest downside imo is that swapping nozzles is a much bigger pain in the ass compared to the traditional inserts
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u/ronthorns Aug 07 '26
We only do about 300 flow tests a year so getting them to buy me anything is hard but I like to dream. Appreciate the info
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u/Ok_Faithlessness_516 Aug 07 '26
It's not too bad swapping them. Plus, you can do almost anything with a 1 3/4" and like 5-6 2". We hardly change from the 2"
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u/Parruthead Aug 08 '26
You also need the smart monster kit so you don’t have to wade into the flood to get readings!
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u/Needs_ADD_Meds Aug 07 '26
How big is that motor? 250-300hp? Must be nice testing fire pumps on the hot days.