Bassadict69
Member
I am wanting to run hot and cold water lines from my house to my dock to feed a water hose and my fish cleaning table...what size lines should I run? It will be about a 100ft run...
What size lines should I run?
- Thread starter Bassadict69
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http://www.uponorpro.com/calculator/ may be useful. Their fittings have less drop than most, so allow for that. I am thinking 1/2 inch PEX for the hot, and 3/4 for the cold. I am figuring that your high volume needs are going to be more cold. Smaller line for the hot means less cooled water to be dumped before the hot water arrives. But it depends on your pressure at the house, the pressure you need at the dock, and the GPM needed. 1/2 for both might be enough.
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Jadnashua
Retired Defense Industry Engineer xxx
Without knowing your volume needs, anything we say is a WAG. There is a known pressure drop from friction based on the size of the pipe, the volume required, and there will be probably a significant temperature drop of a hot run that I assume would be buried. Plus, you have to account for freezing and the local requirement for how deep to run the lines. You'll probably want to make provisions for blowing the lines dry probably before winter. You might be much better off running just cold, and put a small water heater out there, otherwise, you'll probably be running the hot for minutes before it gets warm.
Bassadict69
Member
Not sure how to go about getting my pressure since I have no guage. I have decided to only run a cold water line and suppose 3/4" just to be safe.
rjbphd
In the Trades
Never heard of feed the water hose. .?
Jadnashua
Retired Defense Industry Engineer xxx
FWIW, you can buy a water pressure gauge for less than $20 that will screw onto a hose bib, or say the drain of a water heater, or the supply to your washing machine, or nearly anywhere, if you buy adapters.
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