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Washing machine drain overflows with new washing machine water volume got a solution?. Answered

All other plumbing works great, this one backs up with new washer water volume during spin?  Can I run a snake down the vent? Any other suggestions?  I ask this because there doesn't seem to be an open airwary when draining high volume of water.  When washing machine stops draining the water flows down the pipe.  It is just when it is too much volume that the problem occurs.  Probably a gallon of water ends up on floor.   Need some advice.

Note that adjacent to laundry room is half bath and plumbing there is working fine, also kitchen sink and dishwasher are  within 15 feet and no problems from them. 

Looking for advice.

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EBETHNEW
EBETHNEW

9 months ago

New to this forum. Not sure posting in right place. Piggybacking here since sounds like mostly addresses my situation. Hoping for new updated insights any of you found since posts are old. New to me house 1950's. New washing machine that stopped draining properly. After all fixes explored bought new machine which is now replaced with similar style. Old set-up had direct connect of drain hose to drain pipe with fitting that looked like had small aerator holes. When replaced machine went directly into drain pipe with hose - no direct - just hose dangling into pipe. Water started overflowing out of pipe about 15 seconds into drain cycle. I updated old pipe with PVC and added p-trap - drain line seems unobstructed - reading other info looks like drain pump pressure too strong for drain to handle- I am at 2". Has anyone got any new insights on fixes other than slop sink, which I have no room for (tiny closet with barely enough room for wash/dry and me)? There is no dedicated vent for this and I'm not even sure the sink in the kitchen closest to the machine has a vent (old house with previous old lady owner who never upgraded anything). Will lack of vent majorly diminish drain flow rate? Very grateful if anyone had news suggestions? Thanks! Elisabeth

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iceng
iceng

5 years ago

Just had that exact problem. The miniature threads of fabric dislodged by washing action are reducing the outflow pipe around bends and seriously reducing flow rate.

Clearing the fabric flem with a wire hanger solved the logjam for me.

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jakmalak
jakmalak

Answer 5 years ago

As it turned out, our 1958 home had a 1 1/2 inch line from the washer to our sewer. We had to open the wall and install a larger capacity line for the efficient outflow from a new washer. Problem solved. BTW, tried everything else first as this solution cost money and required help. I thank everyone for their suggestions. jakmalak

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iceng
iceng

Answer 5 years ago

Wow ! Bigger then an 1 1/2" that has to be a turbulent flow from the new washer.

I'm wandering if it was iron pipe and did you replace with PVC ?

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FarmerKJS
FarmerKJS

5 years ago

Your washer may just be pumping too much water for the piping to handle

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Kiteman
Kiteman

5 years ago

If none of the earlier suggestions work, you could try actually connecting your washer outflow to the drainage system, rather than simply letting the water pour down a pipe.

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Downunder35m
Downunder35m

5 years ago

You should have a dedicate connection on the trap for your washing machine.
Using the overflow or air vent system can't work with newer machines as they pump out more water than this tiny pipe can handle.
It should work fine though if you just leave the hose hanging in the sink.

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Vyger
Vyger

5 years ago

It could be that the drain pipe diameter is to small. Better washers with high speed pumps could overwhelm the line. A drain line relies on gravity and that will only create so much downward pressure so the speed of the drain will depend on the size of the pipe. You may have to replace that section with a larger one. I don't think they make governors for washer pumps.

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sixsmith
sixsmith

5 years ago

If I was in your metaphorical shoes, I'd probably run a snake down the drain pipe first, then if still having problems I'd probably disassemble the trap and check it. for more information, is the water coming up from around the top of where the washer drain goes into the house drain? if not then you might have a crack somewhere in the pipe that when the water level gets high enough, or the pressure high enough it leaks water.
we've had so many washer drain problems over the years I can't even remember all the fixes. good luck.