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Old 11-06-2013, 05:59 AM   #1
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how to drain (pump) washing machine upwards?


Hello -

I need to relocate my washing machine in my basement where the only option is pumping it upwards. It would pump up to a new horizontal run of 2" PVC, which connects to an existing run of 2" going to the stack. The overall run back to the stack would be about 11-12'.

Assuming the height that it needs to pump is not a problem (< 96"), I have a few other questions:

1. How does one actually connect the washing machine hose to the vertical pipe? Can the vertical pipe be 1.5" PVC or does that need to be 2" as well?

2. Does the vertical pipe join the horizontal run with a standard 90 deg. fitting?

3. I read somewhere that an AAV should be mounted where the horizontal and vertical pipes meet. Is that required?

Thanks

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Old 11-06-2013, 06:11 AM   #2
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how to drain (pump) washing machine upwards?


You will not be connecting the washer hose to an overhead pipe.

Go to a plumbing supply house and buy a septic pump/box---the machine will drain into that,using a stand pipe and P-trap----then the septic pump will lift the sewage into the house hold drains.

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Old 11-06-2013, 06:13 AM   #3
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Old 11-06-2013, 06:21 AM   #4
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how to drain (pump) washing machine upwards?


If I went that route I'd also invest in an auto shut off.
Pump fails, it shuts the incoming water off.
http://www.ebay.com/itm/Flood-Stop-S...item43c0a24e86
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Old 11-06-2013, 01:39 PM   #5
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how to drain (pump) washing machine upwards?


Thanks for the feedback.

Looks like the ports are threaded. Is threaded PVC pipe available or would I need to do it myself?


For the vent port, the manual says it should be connected to a "house vent". Is that referring to the vent at the main stack? I'm not able to make that connection. Can I just connect another piece of vertical PVC to it and make its own stack?
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Old 11-07-2013, 03:04 AM   #6
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how to drain (pump) washing machine upwards?


You should be able to find a vent somewhere--if not an AAV (air admittance valve) might work----I doubt if that would be code compliant--by it's better than no vent.

Yes, threaded PVC fittings are available--I have never used that brand of box--I just posted that picture for a reference.
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Old 11-07-2013, 08:17 AM   #7
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how to drain (pump) washing machine upwards?


AAV's won't work for a pump. The basin pulls in air as well as displaces air as the water level inside changes- AAV's will not allow that to happen
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Old 11-07-2013, 09:34 AM   #8
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how to drain (pump) washing machine upwards?


You also have to watch what the septic pump box pumps into. You will not be able to connect the pump into an existing 2" line. The pump will put a lot of water into the drain very fast. Once the water hits the regular drain and gravity takes over it slows down, and the pump keeps pumping and it can back up very quickly. Depending on the GPM of the septic pump, you will most likely need to connect it to a 4" line. Some codes also dictate that the septic basin have a dedicated vent all the way to the roof, which can be very hard to achieve. As stated, an AAV will not work at all.
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Old 11-18-2013, 06:38 AM   #9
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how to drain (pump) washing machine upwards?


The documentation for the pump shown in this thread says not to use an AAV with it. So I wouldn't be going that route.

Is there code that specifically states you need a septic pump for this particular type of application, or is it just a good practice?
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Old 11-18-2013, 06:28 PM   #10
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how to drain (pump) washing machine upwards?


Normally what folks do around here is install a laundry sink. It drains to a bucket sump. Washer drains to laundry sink. Bucket sump must pump to 4 inch pipe. Vent on sump can be a pipe up to the floor then turn it down. Since it what we call a grey water waste the smell is minimal. Grey water is water that doesn't receive human waste. The pump tie in should be as far away from fixtures preferably 10 foot.

https://www.acwholesalers.com/Little...FeMRMwodvx4A6g

You will ALSO NEED A SUMP CHECK VALVE.

http://www.pexsupply.com/Zoeller-30-...FetcMgodFRkAMQ

This is installed on the sump discharge in a vertical position.
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Old 11-18-2013, 11:02 PM   #11
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how to drain (pump) washing machine upwards?


OP,

Here's a product that may work for you, http://www.saniflo.com/homeowners/sfa-product-line/sanivite-%C2%AE.
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Old 11-19-2013, 07:52 PM   #12
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how to drain (pump) washing machine upwards?


5 gallon bucket in the ground and a sump pump

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