Holy leaping septic water Batman, backflow is backflow.
Air Gap Problem
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Holy leaping septic water Batman, backflow is backflow.
Ladiesman271
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Golly Beaver, you should tell dad about that definition!
http://www.abpa.org/faq.htm
Backflow is defined on that site.
The air gap discussed in the above is part of a standard dishwasher, and it is factory installed in the water line feed to the dishwasher.
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BurleyMike
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Not trying to be a smart alec but why couldn't a check valve be intslled in the DW line to prevent backflow?
Herk
Plumber
If there is regular plumber's putty under the air gap, it will destroy both the plastic air gap and the marble counter.
A mechanical check valve is not only unnecessary with an air gap, but a source of headaches down the road.
A mechanical check valve is not only unnecessary with an air gap, but a source of headaches down the road.
BurleyMike
New Member
I mean could you install a check valve in place of an air gap? From your reply I take it they would plug up with gunk and not work?
WV Hillbilly
New Member
I plead ignorance about air gaps for dishwasher drains . I know some have them & I have seen many that had a high loop & no air gap device . It seems that most on here that argue they are necessary also refer to a clogged drain condition that forces cruddy water back into the dishwasher . What is in a air gap that would prevent this from happening ? A check valve ? I also understand why an air gap would prevent water from siphoning back to the dishwasher . I'm still wondering if the original poster pulled the hose off the disposal to see if the plug was completely removed .
Ladiesman271
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Me no savy Kemo Sabi.
A more common scenario is that after a long day at work and the usual stop at the local watering hole, the plumber gets home and finds that he has a clogged kitchen sink. The drunk plumber sticks his wifes head in the kitchen sink that is clogged full with nasty chicken parts and stuff. Salmonella and Botchelism. Bizzillions of filthy little bacteria, all swimming around. Wife gets sick, very sick. Perhaps dies.
Wife should have known better. The plumber was expecting to have steak for dinner, not chicken soup!
Yup, $20 for the part. What is the $300 extra labor charge I note on the proposal? Pickup and installation of what, an air gap? Drill hole in counter top? Is that required by code here?
What, it is not required? Then forget about it!
Ladiesman271
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The mess ends up on the kitchen counter all over chicken dinner instead of in the dishwasher in that rare scenario.
Ladiesman271
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A lot of dishwashers already use a check valve as standard equipment in order to prevent that "backflow" from happening. My dishwasher has one!
http://www.applianceaid.com/gedishdrain.html
Plumbers install air gaps to meet plumbing code.
Southern man, nobody is going to sue a plumber for meeting code.
Duh!
This thread is getting stupider by the post.
Southern man, nobody is going to sue a plumber for meeting code.
Duh!
This thread is getting stupider by the post.
This could go on forever I suppose. Terry or someone should shut this one down.
Maybe I can get the last shot in though.
A check valve is a mechanical device with no intermediate air vent and a possibility of failure. Therefore, non code compliant.
And I am still trying to figure out why a supposed engineer with a degree would be so flippant about a device that can solve sanitary problems with so little expense or labor.
Maybe I can get the last shot in though.
A check valve is a mechanical device with no intermediate air vent and a possibility of failure. Therefore, non code compliant.
And I am still trying to figure out why a supposed engineer with a degree would be so flippant about a device that can solve sanitary problems with so little expense or labor.
BurleyMike
New Member
Ok that makes sense why a check valve would not work. I knew there must be a reason the air gap is required.
Redwood
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