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DIY Full Flow brass garden hose shut-off valve
The Water Must Flow
I've been looking into replacing my Gilmour brass quick disconnects with something that has a bit better flow. Along the way I noticed the QDs are only part of the problem...
That is a brass shut-off valve from Home Depot, and it's juxtaposition next to the Arrested Development sticker is no accident.
The inner diameter of the ball valve is just over 1/4". That's a third of the inner diameter of the hose. Unfortunately, well... geometry.
You may think this means that the flow is reduced by two thirds, which sounds bad enough, but you're wrong. The area of the opening through which the water flows is reduced from 0.44 square inches to a measly 0.05 square inches. That's not 1/3 of the water flow, it's 1/9!
Also unfortunate is the fact that there aren't a lot of consumer options. The water pressure needed to keep your petunias alive is fairly weak compared to the pressure needed to blast bird crap off of your paint. The best option I could find was the Dramm Heavy-Duty Brass Shut-Off Valve, but even that only has a 1/2" ball opening. It's better, but screw that, this is Autogeek!
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Re: DIY Full Flow brass garden hose shut-off valve
Very nice DIY project you have invented there and yeah you can buy one and make it easier but building one yourself is even better
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Re: DIY Full Flow brass garden hose shut-off valve
So this is suppose to increase the water flow?
Giving u better water pressure?
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Re: DIY Full Flow brass garden hose shut-off valve
Originally Posted by EvolutionDetail
So this is suppose to increase the water flow?
Giving u better water pressure?
Yup. The inner diameter of the hose is 3/4", so this eliminates the bottleneck created by the smaller valve.
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Re: DIY Full Flow brass garden hose shut-off valve
I will be buying parts and make this exact set up.
I am getting a Adams fire hose nozzle in. So hopefully that will give it full potential
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Re: DIY Full Flow brass garden hose shut-off valve
Do you have video of the difference in water pressure created by the two different shut-off valves?
Shane
2021 Honda Civic Hatchback EX Lunar Silver
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Re: DIY Full Flow brass garden hose shut-off valve
Aw man, I just bought a brass Gilmour shut off thing that you have in your picture. Crap.
2012 Toyota Camry SE | 2013 Toyota RAV4 Limited
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I think like 5 psi but quick connect got to go. I've got 3/4 coming tomorrow. I post my test
Sent from my EVO using Tapatalk
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