Topic 'Garbage Disposal and Dishwasher' in forum 'Home Improvement' - dslreports.com http://www.dslreports.com/forum/Garbage-Disposal-and-Dishwasher-23309818 en Sat, 11 Feb 2012 16:14:46 EDT Sat, 11 Feb 2012 16:14:46 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23464096 said by tp0d:

proper dwv piping and size charts

»www.hometips.com/how-it-works/pl···ent.html

-j
Thanks for the link. I'm gonna need it for a few things I read there, including replacing the GD in the near future.
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Illegal aliens have always been a problem in the United States. Ask any Indian. Robert Orben
]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23464096 Wed, 09 Dec 2009 16:18:27 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23454655 Add an extension piece on where the old dishwasher drain went and bring it up as high as you can to near the top of the sink, put an automatic vent trap on top of it.

»www.plumbingsupply.com/autovent.html
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~Help Find a Cure for Cancer~
~Proud Member of Team Discovery ~
]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23454655 Tue, 08 Dec 2009 01:37:15 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23454409
»www.hometips.com/how-it-works/pl···ent.html

-j
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if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23454409 Mon, 07 Dec 2009 23:57:21 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23453605
[att=1]
[att=2]
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-M
Click for full size
Disposal and Dishwasher connection installed
Click for full size
P trap
]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23453605 Mon, 07 Dec 2009 21:11:28 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23313317 said by Mizzat:

I'm not installing an air gap that requires me to drill a hole in my granite counter top, sorry. And Can you clarify for me tp0d See Profile? I'm not real familiar with plumbing I build telecom networks for a living, not plumbing networks - haha!

Not sure what you're talking about with the V200, tried to Google it and didn't get very far.
A plumber will know what a V200 is. Its also called an auto vent.

Basically, this setup is piped 100% wrong. If it was a new house, I am -very- suprised it passed inspection, unless the inspector was paid off. You need to have this repiped soon, and since you want to add a disposal, this is a good time to call a plumber and have it done right. This is not a DIY thing, sorry. (just for your assurance, I`m a licensed plumber)

good luck

-j
--
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23313317 Mon, 09 Nov 2009 08:17:13 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312694 said by Ken:


#4 The Tee used is not the proper type, it allows water to flow across to the other side and not down. You also can't run a snake down through them.
I just installed a Tee like that on Friday. It had a baffle INSIDE the fitting. It looked like a 'clog zone' to me. :huh:
]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312694 Mon, 09 Nov 2009 00:10:36 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312634 http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312634 Sun, 08 Nov 2009 23:54:10 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312623 said by Ken:

Good catch, I didn't even pay attention to that picture. After looking at the picture further I see several things wrong.

#1 Dishwasher is installed below trap, not above. This allows sewer gas into the dishwasher.
#2 Elbow is a vent elbow and not a proper drain elbow. More likely to clog, and much harder to run a snake through.
#3 Those accordian style pipes are notorious for blockages and should not be used.
#4 The Tee used is not the proper type, it allows water to flow across to the other side and not down. You also can't run a snake down through them.

I would just cut the 1.5" pipe as it comes up out of the bottom of the cabinet and rework the whole setup.
Thanks Ken See Profile, which elbow are you talking about in #2? For #4 is there a better type of T I can buy? I think the accordion trap pipe should be fine since it isn't actually extended, but that should be easy enough to replace if it gets clogged in the future, but I think tp0d See Profile suggested I do something totally different with the trap. I'll await his input after he gets some sleep ;)
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-M]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312623 Sun, 08 Nov 2009 23:51:49 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312599 said by Langning:

said by Mizzat:

I'm not installing an air gap that requires me to drill a hole in my granite counter top, sorry.
You don't have to have an air vent. Either way is OK.
Thanks, I just got done looking at my dishwasher install manual and it basically had the same thing mentioned, its fairy new, so I would think it has something to prevent back flow.
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-M]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312599 Sun, 08 Nov 2009 23:42:46 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312580 said by Mizzat:

I'm not installing an air gap that requires me to drill a hole in my granite counter top, sorry. You don't have to have an air vent. Either way is OK.
]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312580 Sun, 08 Nov 2009 23:37:53 EDT Re: Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312425 See Profile? I'm not real familiar with plumbing I build telecom networks for a living, not plumbing networks - haha!

Not sure what you're talking about with the V200, tried to Google it and didn't get very far.
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-M]]> http://www.dslreports.com/forum/Re-Garbage-Disposal-and-Dishwasher-23312425 Sun, 08 Nov 2009 22:45:40 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312335
I just slapped my forehead..

your plumber really is a dumbass...

He didnt vent the trap. Techincally you have an S trap here, and dropping a bowl full of water could siphon the trap. jesus I cant believe I missed that.

When you do your disposer install, you need to call a licensed plumber, and have him properly repipe the install. You can install a V200 vent under the sink, (if its legal in your area), instead of breaking into the wall.

damn, i need sleep... sigh..

-j
--
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312335 Sun, 08 Nov 2009 22:22:11 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312303
Sure its a bad install, but its probably been working just fine for quite a while, and, if the things I described above dont happen, it could work like that forever.

As for anyone getting sick, thats a long shot. He would notice a backup in the dishwasher before loading it, should that occur.

I`ve only seen one air gap installed like that, ever.. and our code here is pretty strict.

-j
--
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312303 Sun, 08 Nov 2009 22:14:09 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312238
The way you have is plumbed in the picture is going to get someone seriously sick or worse. For goodnes sake do not use the dishwasher until the drain is corrected.
Click for full size
air gap
Click for full size
just wrong
]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312238 Sun, 08 Nov 2009 21:57:11 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312206
what you need is a dedicated trap for your dishwasher, like this:

»www.nachi.org/forum/attachments/···gram.gif

The air break is acceptable.

If you put in the disposal, you can attach the dishwasher directly into that, and use that wye as a cleanout. Be sure to put a plug in it.

if your plumber put in a tee for the dishwasher on the cold, he really is a dumbass.

-j
--
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312206 Sun, 08 Nov 2009 21:50:02 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312178
#1 Dishwasher is installed below trap, not above. This allows sewer gas into the dishwasher.
#2 Elbow is a vent elbow and not a proper drain elbow. More likely to clog, and much harder to run a snake through.
#3 Those accordian style pipes are notorious for blockages and should not be used.
#4 The Tee used is not the proper type, it allows water to flow across to the other side and not down. You also can't run a snake down through them.

I would just cut the 1.5" pipe as it comes up out of the bottom of the cabinet and rework the whole setup.]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312178 Sun, 08 Nov 2009 21:45:06 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312096 said by robbin:

Normally a dishwasher is plumbed into the disposal or into one of the sink drain pipes ABOVE the sink trap. In other words, the dishwasher drain line is open to air in the sink plumbing. Your installation has the dishwasher plumbed directly in the sewer line where sewer gas is present (there is no trap between the dishwasher and the waste line).
Yea, the guy that did the plumbing did a horrible job. That is a good point, I guess another reason in my case to do the dishwasher line into the disposal. I'll need to find a cap for that Y side once I disconnect it. Thanks!

Another thing that you might notice is a T with a valve on the right (cold) water. That was originally the water supplied to the dishwasher when I moved in. I bought a T and installed it on the hot water side, as well as new braided hoses as the old ones were plastic, but new, and were already leaking.
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-M]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312096 Sun, 08 Nov 2009 21:28:00 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312072 http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23312072 Sun, 08 Nov 2009 21:19:29 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311997 said by robbin:

I've never seen one installed so that it connects before the trap. I would question whether that would pass code. I don't believe that you can install an air gap on the current installation as it would vent sewer gas into the living space.

I believe that the International Plumbing code requires the air gap if you care about such.
Can you please clarify what you're talking about? Never seen a dishwasher installed before the trap? In my case its installed after the trap.
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-M]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311997 Sun, 08 Nov 2009 20:57:26 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311760
I believe that the International Plumbing code requires the air gap if you care about such.]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311760 Sun, 08 Nov 2009 20:08:28 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311441 Edit: to clarify the connections on the left side wall are to and from the dishwasher.
[att=1]

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-M
Click for full size
Under the sink
]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311441 Sun, 08 Nov 2009 18:56:20 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311252
Its possible you have one of these installed:

»www.terrylove.com/forums/attachm···47584349

minus the tee to the left though.

If you have one of those, you just disconnect it, and reconnect to the disposal, done.

Be forwarned if you dont currently have a disposal, its quite possible you may need some repiping under the sink (drainage), as the disposal will change the center and height of the trap.

good luck

-j
--
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311252 Sun, 08 Nov 2009 18:10:04 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311104 http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23311104 Sun, 08 Nov 2009 17:27:46 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23310647 said by PrntRhd:

Just had my dishwasher replaced and the disposer replaced this year as well.
The dishwasher air gap device is required out here, I learned how to clean it when installed, they can clog with food particles and will start flooding the top of the sink if clogged.
The disposer had a knockout fitting to install the hose from the dishwasher. It is quieter and puts less humidity into the room than running the discharge into the sink, also will not discolor (unevenly bleach areas of) the sink with chlorinated dishwasher solution. You really do not want the ripe discharge in the main drain or hose to get back into the dishwasher and get the dishes contaminated or the dishwasher to stink so it is a good idea to install the air gap.
I just had an old Waste King disposer (rusted through the grinding impeller disk) replaced with a Insinkerator Evolution Compact model. 3/4 HP and quiet, w quick release if it needs to be replaced in the future. Stainless steel grinding components.
I was probably going to get the Insinkerator Evolution Excel or Essential, their highest lines, as I need something quite because I have a great room that is one large room with cathedral ceiling that encompasses the living room, dining room and kitchen.

I'm more asking of why it needs to be connected to the dishwasher and what is the benefit of it? I think Ken helped answer part of that by letting us know it helps keep the GD clean, that's good to know!
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-M]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23310647 Sun, 08 Nov 2009 15:31:31 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23309989
On the other hand some areas of the country do have local codes that require the dishwasher to have a sink mounted air gap. In other areas code does not require this as long as you loop the drain line up high in the cabinet.]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23309989 Sun, 08 Nov 2009 12:30:24 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23309961
Hoping for comments from our resident experts on this easy method.

edit: This method is meant to replace installing an air stop gap.
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The Geek Shall Inherit the Earth]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23309961 Sun, 08 Nov 2009 12:22:36 EDT Re: Garbade Disposal and Dishwasher http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23309928 The dishwasher air gap device is required out here, I learned how to clean it when installed, they can clog with food particles and will start flooding the top of the sink if clogged.
The disposer had a knockout fitting to install the hose from the dishwasher. It is quieter and puts less humidity into the room than running the discharge into the sink, also will not discolor (unevenly bleach areas of) the sink with chlorinated dishwasher solution. You really do not want the ripe discharge in the main drain or hose to get back into the dishwasher and get the dishes contaminated or the dishwasher to stink so it is a good idea to install the air gap.
I just had an old Waste King disposer (rusted through the grinding impeller disk) replaced with a Insinkerator Evolution Compact model. 3/4 HP and quiet, w quick release if it needs to be replaced in the future. Stainless steel grinding components.]]> http://www.dslreports.com/forum/Re-Garbade-Disposal-and-Dishwasher-23309928 Sun, 08 Nov 2009 12:13:27 EDT Garbage Disposal and Dishwasher http://www.dslreports.com/forum/Garbage-Disposal-and-Dishwasher-23309818
I have a dishwasher currently and want to install a garbage disposal. In reading about the GD, I found that it is common practice to connect the dishwasher to the GD. However, what I can't find is what the benefits and risks are of doing this. Trying to search codes for GA and I haven't found anything yet about this being a requirement, as well as if having an air stop gap as well.

My thoughts: The hot water and and leftover food particles can be good to go through the disposal rather than clog the drain and in either case an air stop gap is probably a good idea.

Any other benefits or risks you all know or can think of and recommendations?

Thanks!
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-M]]> http://www.dslreports.com/forum/Garbage-Disposal-and-Dishwasher-23309818 Sun, 08 Nov 2009 11:46:50 EDT