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Old 05-12-2016, 09:16 PM   #1
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Potable water hose 1/2 in or 5/8???

Currently have 5/8 inch potable water hose. Want to get better quality but notice there is a ton of 1/2 inch out there, and 5/8 to a lesser degree...will I notice a difference? Should I stick to 5/8 inch?
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Old 05-12-2016, 11:21 PM   #2
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I don't think you will. I have never seen anything bigger than 1/2 lines in a TT. If you had a big FW running the washer and taking a shower might be an issue...
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Old 05-12-2016, 11:41 PM   #3
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Used a 5/8 for the 1st time on last trip. Didn't notice any difference until I ran the outside shower while DW was using kitchen sink. The water flow drop was far less noticable.
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Old 05-13-2016, 08:30 AM   #4
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You won't notice much difference if any. All the outlets in an RV have restricted flow devices in them so " hose is more than enough to run a couple at a time. You'll have more restriction through a regular pressure regulator than the hose.
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Old 05-13-2016, 08:38 AM   #5
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Originally Posted by Bama Rambler View Post
You won't notice much difference if any. All the outlets in an RV have restricted flow devices in them so " hose is more than enough to run a couple at a time. You'll have more restriction through a regular pressure regulator than the hose.
This is the corner I am in also! Youroo!!
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Old 05-13-2016, 08:49 AM   #6
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I'm in the larger diameter hose corner. I think it has been said "it's the volume that does the work" and therefore 5/8 is my choice and what I use.
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Old 05-13-2016, 11:31 AM   #7
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Check this one out Valterra W01-7300 White 5/8" x 25' Kink Free Drinking Water Hose(Amazon...where else). I've had a pair of these for a few years. They wind up quite compactly on what you would use for and extension cord. Getting a decent/ durable hose that stores well isn't the easiest thing to find. I've used those hoses that look like an imitation firehose( they're junk) IMHO. This one gets two thumbs up in my experience
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Old 05-13-2016, 12:37 PM   #8
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I'm in the larger diameter hose corner. I think it has been said "it's the volume that does the work" and therefore 5/8 is my choice and what I use.
X 2
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Old 05-13-2016, 12:55 PM   #9
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The PEX in your unit is 1/2" so the larger hose still feeds into the smaller diameter water lines before it gets to any faucets.
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Old 05-13-2016, 01:02 PM   #10
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The PEX in your unit is 1/2" so the larger hose still feeds into the smaller diameter water lines before it gets to any faucets.
True.
And as long as you only used one faucet, the larger supply hose would not make a difference.
It's when you open two or more faucets that the larger supply line helps and then, really only on the cold side as the 1/2" pex is usually pretty short from the city hook-up before it branches out to the various plumbing runs.

Of course, all this depends on at least 5/8" diameter (or >) supply at the pedestal/water bib.

EDIT: Pressure (for me) is WAY more important than supply hose diameter.
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