Help this girl finish a dishwasher install :)

Hi everyone!

Trying to replace my old Frigidaire dishwasher with a new Whirlpool.

Per the installation manual, the Whirpool requires a special elbow 3/8 x 3/4 (https://www.lowes.ca/brass-fittings/watts-a-158a-38-in-x-34-in-compression-fitting_g1200132.html) that i bought separately.

Here is where i'm running into issue, the water supply line appears to also be 3/8" in diameter...so it's the same size as the elbow connector and won't fit into it. How should I go about connecting them?

Here's a few pictures to hopefully give you a better idea..any help greatly appreciated!

http://www.picpaste.com/line_up-ehTtSG6g.jpg
http://www.picpaste.com/overview-USTDtX2H.jpg

Do i need a special adapter to get the water supply to connect into the elbow?

If anyone is able to tell just from the pictures, do I indeed have 3/8" copper pipes?

I feel so silly asking but really hope i can get this figured out

It appears you have 1/2" water line. Measure the outside dimension of the copper and it is probably 1/2". As an apparent novice DIYer it will probably be easier for you to remove the copper line entirely and replace with a braided stainless steel dishwasher water line that is available at any plumbing store. You will get this done. Good luck.

hard to tell the size of that pipe , it looks to be regular 3/8'' tubing also know as 1/4''L

are you sure the fitting you bought is not 1/4'' instead of 3/8''?


just for a visual reference, is the water line to the dishwasher the same size as the water line supplying your kitchen sink faucet?

frodo said:

hard to tell the size of that pipe , it looks to be regular 3/8'' tubing also know as 1/4''L

are you sure the fitting you bought is not 1/4'' instead of 3/8''?


just for a visual reference, is the water line to the dishwasher the same size as the water line supplying your kitchen sink faucet?

Click to expand...

I measured the outside circumference of the copper water line to my dishwasher and it measures ~1.7".

If I reading this table correctly, it would mean the pipe is only 1/4"?

http://cd8ba0b44a15c10065fd-24461f3...laforums.com/posts/6057/Pipe Sizing Chart.jpg

natalie said:

I measured the outside circumference of the copper water line to my dishwasher and it measures ~1.7".

If I reading this table correctly, it would mean the pipe is only 1/4"?

http://cd8ba0b44a15c10065fd-24461f3...laforums.com/posts/6057/Pipe Sizing Chart.jpg

Click to expand...

Ok, did some more reading & learning.

So I'm fairly confident my dishwasher supply line is 1/4" NPT.

I was worried because my dishwasher requires a minimum water supply line of
3/8” (outside diameter) but that is the outside diameter and I think 1/4" NPT meets that minimum?

So now I guess I'm back to figuring out how to connect this copper pipe to the dishwasher elbow, which i did confirm is 3/4" x 3/8.

to small. you need to change out the line going to the washer

that is a typical, 3/8 supply tube found under 99.99999999999% 0f american house sinks

might be 99.99998 not sure about a guy in virginia, he refused to answer the survey..

http://screencast.com/t/Jfe6Gb16

if you will tell me what kind of valve the line is hookeed to

we can figure out what you need

sorry...1/4'' npt means national pipe thread

screw pipe and tubing are different

frodo said:

that is a typical, 3/8 supply tube found under 99.99999999999% 0f american house sinks

might be 99.99998 not sure about a guy in virginia, he refused to answer the survey..

Click to expand...

Hahaha, not in Virginia

So are you saying my supply tube is in fact ok? (that i dont' have to change it?)

and I will take a picture of the valve and post shortly

Thanks again!

I think your supply line is to small...thats why i keep asking for a picture of the valve and if it is the same as the kitchen faucet supply

you thought i just wanted to see in your cabinet,,,i have seen under hundred of cabinets, unless you are storing hummles i'm ok

hate hummels,,,they stare at you

Natalie. I recently purchased a new dishwasher and they now have a universal contraption on their dishwasher which is not common with older supply lines. I removed their new fitting and brought it to Home Depot, and was able to get a stainless steel flex dishwasher supply line which solved all the headaches.

frodo said:

I think your supply line is to small...thats why i keep asking for a picture of the valve and if it is the same as the kitchen faucet supply

you thought i just wanted to see in your cabinet,,,i have seen under hundred of cabinets, unless you are storing hummles i'm ok

hate hummels,,,they stare at you

Click to expand...

hahha, no hummels, you can rest safe!

Attached is a picture of the valve to my dishwasher supply line:

http://www.picpaste.com/pics/imagejpeg_2-gb02o8FH.1448299320.jpg

Hopefully that's what you were looking for?

ps: How many guys have bruised ego's when informed that their supply tubing is too small?

havasu said:

Natalie. I recently purchased a new dishwasher and they now have a universal contraption on their dishwasher which is not common with older supply lines. I removed their new fitting and brought it to Home Depot, and was able to get a stainless steel flex dishwasher supply line which solved all the headaches.

Click to expand...

Yeah, I'm thinking i may cut off the copper pipe a few inches after the shut-off valve, and use a compression fitting to hook-up a flex line that could then easily run to the dishwasher?

But i guess I'm just worried the pipe is now too small....

The stainless steel flex line has a rubber gasket inside of it so you would not need to use any compression fittings. Just Screw in and turn on.

do you have a dremel ? with a abrasive cut off blade?

cut as close to the solder joint as you can...then install a 1/2'' compression x 3/8'' compression reducing brass fitting
http://www.bing.com/images/search?q...&thid=OIP.Mf547260f773c0cad2cea3c49d887c714o0


the braded supply line i posted earlier will thread onto this.

natalie said:

hahha, no hummels, you can rest safe!

Attached is a picture of the valve to my dishwasher supply line:

http://www.picpaste.com/pics/imagejpeg_2-gb02o8FH.1448299320.jpg

Hopefully that's what you were looking for?

ps: How many guys have bruised ego's when informed that their supply tubing is too small?

Click to expand...

as long as its extra firm when fully extended, its the moton of the ocean not the size of the ship

Thank you everyone!!!

Is this the right adapter? I'll pick it up after work and report tonight

https://www.lowes.ca/1/1/200916-1-2-x-3-8-brass-female-adapter-from-watts-a-230.html

I don't have a dremel but I think i think i hopefully have enough room in there to use a hacksaw.

And the ocean can be very powerful - Small ships can get lost lol

oh oh...negative batgirl, you need compression x compression

lowes is not showing the correct adapter,,,so get a valve, same thing, just an extra, you dont need it but the GD supply house didnot have what i want part

http://screencast.com/t/TvTxhNii