Dishwasher Drain Hose Extension

[Tim D]

I am hooking up a dishwasher in my kitchen and the 6ft corrugated drain hose that is attached to the dishwasher is about a foot or so too short. I have thought about replacing the factory hose with a longer one but where it is attached it seemed to be sealed and I’d rather not tamper with it. I was going to attached a black rubber hose with clamp rings which seems like it would work but the the drain piece that branches from the bottom of the sink is 7/8” and I can find a hose that has a 1” or less diameter with a 7/8” inside diameter. I can post pics of where the drain hose connects to the dishwasher if needed but I am looking for a solution to extend the hose with the least amount of potentials for leaks. Thank you in advance.

 

[CT18]

We used to extend them with 1/2" or 3/4" copper pipe as a coupling with hose clamps. Dishwasher hose would connect to black rubber hose whatever the length you need.

 

[Geofd]

ct18 ihave see them done that way......I had to install a vaccum breaker on a couple because for some reason they wouldn't drain but after installing the vb it worked fine

 

[Tim D]

We used to extend them with 1/2" or 3/4" copper pipe as a coupling with hose clamps. Dishwasher hose would connect to black rubber hose whatever the length you need.

I have very little experience with this so I just want to make sure I understand correctly. You would connect a copper pipe coupling going from the tailpiece to connect to the rubber hose using clamps to secure the connection?

 

[Geofd]

they make dishwasher drain hose at home depot you would need a (barbed adapter)to fit inside the drain hose on the dishwasher and the one you get from home depot it looks like a small radiator hose...you may have to make the drain hose hole a little bigger (in your cabinet)hose clamp the connections together loop the hose going into the drain as high as possible you can get a plastic clip for pipe that fits your hose and screw it up as high as possible that will keep the dirty water from draining back into the dishwasher

 

[Mr_David]

You don't need a barbed adapter. They're usually made of thicker material than just a short piece of copper tube and can cause restriction in flow.
The end of the dishwasher hose is designed to fit onto the smaller nipple of the air gap ( 5/8" ) or directly to a disposal nipple ( 7/8" )

All you need is:
a short piece of 1/2" copper tube ( 5/8" OD )
5/8 ID drain hose
hose clamps.

Or a https://www.homedepot.com/p/Everbilt-Dishwasher-Disposal-Connection-C7983C/205153935
or do a search for dishwasher drain hose adapter. some come with a barbed nipple

I was just looking at something online and just realized some dishwasher manufactures drain hoses are not all the same.
do you have a photo of the end of you hose that you want to extend. Not the end connected to dishwasher.

 

[frodo]

View attachment 19085

 

[Tim D]

You don't need a barbed adapter. They're usually made of thicker material than just a short piece of copper tube and can cause restriction in flow.
The end of the dishwasher hose is designed to fit onto the smaller nipple of the air gap ( 5/8" ) or directly to a disposal nipple ( 7/8" )

All you need is:
a short piece of 1/2" copper tube ( 5/8" OD )
5/8 ID drain hose
hose clamps.

Or a https://www.homedepot.com/p/Everbilt-Dishwasher-Disposal-Connection-C7983C/205153935
or do a search for dishwasher drain hose adapter. some come with a barbed nipple

I was just looking at something online and just realized some dishwasher manufactures drain hoses are not all the same.
do you have a photo of the end of you hose that you want to extend. Not the end connected to dishwasher.

You don't need a barbed adapter. They're usually made of thicker material than just a short piece of copper tube and can cause restriction in flow.
The end of the dishwasher hose is designed to fit onto the smaller nipple of the air gap ( 5/8" ) or directly to a disposal nipple ( 7/8" )

All you need is:
a short piece of 1/2" copper tube ( 5/8" OD )
5/8 ID drain hose
hose clamps.

Or a https://www.homedepot.com/p/Everbilt-Dishwasher-Disposal-Connection-C7983C/205153935
or do a search for dishwasher drain hose adapter. some come with a barbed nipple

I was just looking at something online and just realized some dishwasher manufactures drain hoses are not all the same.
do you have a photo of the end of you hose that you want to extend. Not the end connected to dishwasher.

Thank you so much. I actually went to Home Depot before seeing this and this is exactly what I did. This forum has been so helpful. Thanks for all of your responses everyone! Sink is up and running with no leaks knock on wood.

 

[jeanbean]

View attachment 19086 View attachment 19085

Can you help me understand this? If I disconnect my [too-short] hose from the garbage disposal, connect it to the length of radiator hose from the auto store as shown in your diagram, how would I connect the radiator hose to the garbage disposal? Can I buy an adaptor that will fit on the disposal nozzle and the radiator hose? Will I need another piece of copper tube and clamps for that joint? --Jean

 

[Twowaxhack]

Can you help me understand this? If I disconnect my [too-short] hose from the garbage disposal, connect it to the length of radiator hose from the auto store as shown in your diagram, how would I connect the radiator hose to the garbage disposal? Can I buy an adaptor that will fit on the disposal nozzle and the radiator hose? Will I need another piece of copper tube and clamps for that joint? --Jean

You’ll need one of these, a short piece of pipe and an extra clamp.
https://www.lowes.com/pd/EASTMAN-3-...3cbTrYhs2S52_zflZ7RoCFmgQAvD_BwE&gclsrc=aw.ds

 

[jeanbean]

You’ll need one of these, a short piece of pipe and an extra clamp.
https://www.lowes.com/pd/EASTMAN-3-...3cbTrYhs2S52_zflZ7RoCFmgQAvD_BwE&gclsrc=aw.ds

Thank you! Here's my shopping list. I hope I get this right. I appreciate the help from you and the previous posters!
-short piece of 1/2" ID copper tube X2
-length of 5/8" ID automotive radiator hose
-outlet rubber dishwasher connector
-3 hose clamps

 

[Twowaxhack]

Sounds right

 

[jeanbean]

Sounds right

Thanks so much!

 

[jeanbean]

You don't need a barbed adapter. They're usually made of thicker material than just a short piece of copper tube and can cause restriction in flow.
The end of the dishwasher hose is designed to fit onto the smaller nipple of the air gap ( 5/8" ) or directly to a disposal nipple ( 7/8" )

All you need is:
a short piece of 1/2" copper tube ( 5/8" OD )
5/8 ID drain hose
hose clamps.

Or a Everbilt 1-1/2 in. Black Rubber Dishwasher Garbage Disposal Connector-C7983C - The Home Depot
or do a search for dishwasher drain hose adapter. some come with a barbed nipple

I was just looking at something online and just realized some dishwasher manufactures drain hoses are not all the same.
do you have a photo of the end of you hose that you want to extend. Not the end connected to dishwasher.

----------------------------------------
Mr. David, can you suggest anything for me?
This is a pic of my drain hose. I can't connect it with the copper pipe because it is a little too small diameter. I think it's because of the ribbing. I can't get the piece of copper pipe into it.
Any ideas??

 

[Twowaxhack]

That usually has a rubber boot molded onto the corrugated white tube.

There’s nothing I’m aware of that will connect to that hose and seal properly.l