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Old 01-08-2017, 06:03 PM   #1
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Installing New Dishwasher


The old dishwasher (installed by the previous owner) was a direct 3/4" connection from under the sink to the 3/4" connection on the dishwasher.

The new dishwasher tells me to use the 3/4 to 3/8 brass elbow on it. So I bought a braided SS dishwasher hose kit from HD. All good there.

The line that feeds the dishwasher (3/4 tee off of the 1/2 pipe that feeds the sink) never had its own shut valve. The valve for the hot to the faucet did both so I installed a 3/4" shut off for the dishwasher.

Then I installed a 3/4 to 3/8 adapter off the new valve.

Will going from 1/2 (feed coming up from the basement), to 3/4" then down to 3/8" cause any problems like too much water pressure to the dishwasher?

I keep picturing when you put your finger on a garden hose to spray water. LOL

See Pics! Thanks!
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Old 01-08-2017, 06:52 PM   #2
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Re: Installing New Dishwasher


Looks fine, nice work. The larger valve won't give you any trouble.

Just to be pedantic and correct your terminology, what you're looking at is a 1/2 tee with a 1/2" female adapter, with a 3/4x1/2 reducing nipple which your 3/4" threaded ball valve is on. :P You certainly could have removed the 3/4x1/2 and used a 1/2" nipple and a 1/2" ball valve, but there's nothing wrong with what you did. The price difference of the smaller valve but buying a nipple would have probably been about the same.
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Last edited by BlackTiger; 01-08-2017 at 07:02 PM.
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Old 01-08-2017, 06:56 PM   #3
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Re: Installing New Dishwasher


No.... The water pressure is the same.
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Old 01-08-2017, 07:05 PM   #4
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Re: Installing New Dishwasher


Thanks for the replies. Glad to know that will work fine. Thx.
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Old 01-09-2017, 11:47 AM   #5
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Re: Installing New Dishwasher


Just curious, was that a gas valve that was newly installed?
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Old 01-09-2017, 11:58 PM   #6
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Re: Installing New Dishwasher


Quote:
Originally Posted by bob22 View Post
Just curious, was that a gas valve that was newly installed?
Its a Watts 3/4 in. Brass FIP x FIP Full Port Threaded Ball Valve.

Quote:
This 3/4 in. 2-piece full port lead free ball valve is used in residential and commercial potable water applications, suitable for a full range of liquids and gases.
http://www.homedepot.com/p/Watts-3-4...V-3C/205888734
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Old 01-10-2017, 12:03 AM   #7
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Re: Installing New Dishwasher


Got the dishwasher and new air gap installed today. The old one did not have an air gap or a high loop. An air gap is required in DE.

Anyway, ran the dishwasher and no leaks! Next project!
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