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Author:
mwr (IN)
I am consider installing Liberty pump model 404 to send washer and softner water to overhead lateral from the sink in the photo. The sink in the photo currently drains (without a trap) into the sump pit.
First off do I even need a trap in this setup with that pump? From the photo do you think I can fit a trap if needed? Is the 22 cast elbow 1.5" able to be reused without buying a new strainer?
Any advice is very much appreciated.
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Author:
packy (MA)
first off.. you will never buy a NEW strainer for that set-up.
I worked on that exact set-up a couple of years ago and I remember a little about it.
I think there are 2 bolts that hold that double inlet-single outlet piece in place.
you need to cut those bolts, remove the rubber coupling and remove that piece. using 2 hammers, one under the 45 and one to hit it really hard, crack the 45 and remove. there are some kind of rubber washers between that 'strainer' and the sink. you can fashion some new rubber washers and re-attach that strainer. reuse the rubber coupling to transition to plastic. now, you do need a trap for that sink and you will need a check valve and also to vent the pump as well.
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Author:
mwr (IN)
Is it not possible to leave the elbow in place and attach to the nipple with a coupling and fashion a trap that way?
And if I had to totally remove the elbow, why break it? Is it likely I wouldn't be able to wrench it off?
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Author:
hj (AZ)
1. You won't be able to wrench it off, and if you try to crack it off you will probably destroy the drain fitting.
2. that pit is not connected directly to the sanitary system so the sink does not need a trap.
3. How does that pit drain now? Does it already have a pump in it?
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Author:
mwr (IN)
"3. How does that pit drain now? Does it already have a pump in it?"
Yes, it has a 1/2hp sump pump in it. It drains into the sanitary sewer. There is storm runoff in addition to the grey water, so I was exploring options to discharge outside hence the drain pump for the grey water.
The sump discharge has a basic check valve installed on it (rubber coupling style), I fear what would happen if I have a main sewer blockage.
Do you think adding a drain pump would be redundant at this point since there is already a sump pump involved?
Seeing that the sump pit drains into sanitary sewer, does that laundry tub need a trap?
One other question to add:
WIth it going into the sewer... is it better to use a glued pvc checkvalve on the discharge or a basic rubber/clamp slip on style? Or something else?
Edited 2 times.
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Author:
hj (AZ)
The sump pit acts as the trap, and any check valve will work.
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Author:
mwr (IN)
PVC spring check or rubber sleeved check valve... in the event of a sewer backup, which will hold better?
The PVC are intended for sewage correct?
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Author:
KCRoto (MO)
Either one will work, the rubber coupled ones can hold 10 feet of water column anyhow and I remember you said it was only 7 feet to the main drain. I like the coupled ones myself, check valves in any drainage application need to be serviceable.
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