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 Sewage lift pump ventilation
Author: Tommyg (IN)

My parents had a sewage lift pump pit installed for there new bathroom and once everything was finished, a venting issue arose. The sewage lift pump was being vented by an air admittance valve, but the rest of the bathroom also has air admittance valves. This sewage lift pit cannot expel air into a vented system because it is only tied to air admittance valves. I am trying to figure out what they could tie into, what vent they could use. They don't want to drill up to the attic thru the house and they don't want to drill out the side of the house, could they tie into a sink drain the comes down from the first floor? Can the sewage pit vent into the drain line from the sink on the first floor?

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 Re: Sewage lift pump ventilation
Author: packy (MA)

why did the installer not put a proper vent to the atmosphere ?
i think a call to the local plumbing inspector is in order.
the system WILL NOT WORK the way it is installed.
all of these issues should have beed addressed prior to doing the work and payment must not be made until it works as intended..

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 Re: Sewage lift pump ventilation
Author: bernabeu (SC)

packy,

you are assuming a permit was issued

NOW they will have to retrofit a proper vent at twice the cost

:(

Why is there never time or money to do it right, but ALWAYS time AND money to do it again ?

= = = = = = = = = = = = = = = = = = = = = = = = = = =

Retired U.A. Local 1 & 638 ~ Measure Twice & Cut Once

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 Re: Sewage lift pump ventilation
Author: packy (MA)

i agree, my friend from SC..

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 Re: Sewage lift pump ventilation
Author: hj (AZ)

This is apparently a "retrofit" so the cost will be the same as if they had done it when the plumbing was installed.

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 Re: Sewage lift pump ventilation
Author: bernabeu (SC)

not if they now have to REopen the walls to run the vent

= = = = = = = = = = = = = = = = = = = = = = = = = = =

Retired U.A. Local 1 & 638 ~ Measure Twice & Cut Once

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 Re: Sewage lift pump ventilation
Author: hj (AZ)

I doubt that the upstairs walls were "open" when this unit was installed.

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 Re: Sewage lift pump ventilation
Author: Tommyg (IN)

Can they tie into a dedicated vent on the first floor?

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 Re: Sewage lift pump ventilation
Author: packy (MA)

yeah, if someone can tie into a 2 inch vent at a point 6 inches higher than the flood rim of the fixture it serves.
just to show what schmucks these installers are, unscrew the AAV on top of the ejector vent and watch how well it will work. you are going to get some smell out of the open vent so make sure to put it back after..

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 Re: Sewage lift pump ventilation
Author: Tommyg (IN)

Could they vent into the drain line coming down from the first floor kitchen sink, that is seen in the basement? If they get any water or gunk in the vent line from the sewage pit, it's ok because the pit will then pump it out. I'm trying to find them possible answers.

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 Re: Sewage lift pump ventilation
Author: packy (MA)

no they can not. if the drain blocked up below where you connect the vent, the kitchen will drain into the vent and down into the tank.

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