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Old 01-27-2012, 07:32 PM   #1
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1/2 pvc pipe


I am thinnking of using 1/2 pvc pipe to run new water lines to a bsmt. kitchen sink. I want to use existing 3/8 shutoff valves that are under my slop sink. They are about 35 ft. away from new sink. Is it doable to connect to the 3/8 valves with a tee fitting, and then connect an adapter for the pvc?

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Old 01-27-2012, 07:35 PM   #2
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1/2 pvc pipe


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I am thinnking of using 1/2 pvc pipe to run new water lines to a bsmt. kitchen sink. I want to use existing 3/8 shutoff valves that are under my slop sink. They are about 35 ft. away from new sink. Is it doable to connect to the 3/8 valves with a tee fitting, and then connect an adapter for the pvc?
i think you mean cpvc......but I really would do pex if i were you...Iwould run 1/2 pipe to other sink tapped off 1/2"piping not 3/8...


Last edited by ben's plumbing; 01-27-2012 at 07:38 PM.
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Old 01-27-2012, 07:42 PM   #3
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1/2 pvc pipe


It is not 3/8 piping, it is a 3/8 valve shutoff under the sink. I want to put a tee on the valve and then connect the 1/2 cpvc to an adapter for the 3/8 valve.
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Old 01-27-2012, 07:54 PM   #4
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1/2 pvc pipe


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It is not 3/8 piping, it is a 3/8 valve shutoff under the sink. I want to put a tee on the valve and then connect the 1/2 cpvc to an adapter for the 3/8 valve.
if you do that you are still feeding off a 3/8 " port....not 1/2" as intented.... maybe Iam missing something...if you shut off 3/8 valve would it control both sinks????
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Old 01-27-2012, 08:04 PM   #5
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1/2 pvc pipe


yes. the adapter is for 3/8 to 1/2 cpvc. I would put another shutoff at the other end for hot and cold.
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Old 01-27-2012, 08:15 PM   #6
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1/2 pvc pipe


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yes. the adapter is for 3/8 to 1/2 cpvc. I would put another shutoff at the other end for hot and cold.
thats what i thougth.... i can't ok this install because its not right...off the record will it work yes....would it past code no ...
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Old 01-27-2012, 08:22 PM   #7
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1/2 pvc pipe


Far better to have you main long line run with 3/4 if you expect to have an presuure and flow at the end of the line then step it down at the shut offs.
Your decription does not make since to me.
Wheres the hot water line? Your going to have to run two lines one for hot and one for cold.
If your plan is to try and use old shut off valves, forget it. They go bad over time. They make CPVC to 3/8 compression shutoffs that just glue on.

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