Can a sewage ejector pump vent thru a 2" pipe and then a 1.5" pipe? I have a 1.5" vent pipe that goes through the roof right next to the ejector- could I run a 2" line up about 6ft from the base of the ejector and then reduce down to a 1.5" vent line that goes thru the roof and be ok- would this meet code?
Vent for sewage ejector pump
- Thread starter Baci
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Seaofnames
DIY Senior Member
Never reduce size downstream for drainage or venting.
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Master Plumber Mark
Sensitivity trainer and plumber of mens souls
it will work
depending on where you live will determine
wether it will meet code...
but it will certainly function properly
with only a 1 1/2 vent ...
depending on where you live will determine
wether it will meet code...
but it will certainly function properly
with only a 1 1/2 vent ...
1.5" Vent pipe
Thanks for the replies. I plan to have a toilet, shower, and sink going into the ejector pit and I'm in Colorado. Not sure what the rules are in this state, do some states allow 1.5" for code for this type set up or does it just work functionally?
Thanks for the replies. I plan to have a toilet, shower, and sink going into the ejector pit and I'm in Colorado. Not sure what the rules are in this state, do some states allow 1.5" for code for this type set up or does it just work functionally?
Cwhyu2
Consultant
That is the rule!
hj
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vent
There are a lot of rules that can be tweaked and still function properly, and venting is one of them. Vents are often "reduced in the direction of the flow" and then increased again when merged with others.
There are a lot of rules that can be tweaked and still function properly, and venting is one of them. Vents are often "reduced in the direction of the flow" and then increased again when merged with others.
2" Vent
Because the 1.5" vent line was questionable I drew up a plan for a 2" vent line for the ejector pump but it is farther away. I show the vent line going up 7ft vertically right away, but then traveling about 15 ft laterally to the 2" vent that goes thru the roof.
Because the 1.5" vent line was questionable I drew up a plan for a 2" vent line for the ejector pump but it is farther away. I show the vent line going up 7ft vertically right away, but then traveling about 15 ft laterally to the 2" vent that goes thru the roof.
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Questions about the Plan
My main questions about this plan are:
1. Will the vent line work and be in code if it goes vertically up 7ft immediately from the pump then travels 15ft laterally before going vertically again and exiting through the roof?
2. If this is not ok what would work or be in code - how far laterally is the limit of travel for a vent line?
3. Will all three fixtures have the appropriate venting in the design below (with the current vent set up or with an immediate vertical vent)?
4. If the design below does not have the correct venting, what is wrong and how could it be set up correctly?
Thanks for any help the forum can provide. I'm a novice at plumbing and find the design, planning, and execution interesting and enjoyable to learn and do. Based on various posts I've read I believe there are a lot of knowledgeable, experienced, and professional people in the forum and appreciate any feedback that is provided.
My main questions about this plan are:
1. Will the vent line work and be in code if it goes vertically up 7ft immediately from the pump then travels 15ft laterally before going vertically again and exiting through the roof?
2. If this is not ok what would work or be in code - how far laterally is the limit of travel for a vent line?
3. Will all three fixtures have the appropriate venting in the design below (with the current vent set up or with an immediate vertical vent)?
4. If the design below does not have the correct venting, what is wrong and how could it be set up correctly?
Thanks for any help the forum can provide. I'm a novice at plumbing and find the design, planning, and execution interesting and enjoyable to learn and do. Based on various posts I've read I believe there are a lot of knowledgeable, experienced, and professional people in the forum and appreciate any feedback that is provided.
hj
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vent
As long as the vent has a continual upward slope, there are few limitations on how you install it. Where are the fixture vents and how do they connect to the building's vents.
As long as the vent has a continual upward slope, there are few limitations on how you install it. Where are the fixture vents and how do they connect to the building's vents.
Vents
Thanks for the feedback.
The fixture vents as shown are all vented thru the pit. The pit then serves as the vent for all fixtures. The vent for the pit in the diagram goes up vertically 7ft and then ties into a 2" vent line that exits the roof of the house(this vent would serve the pit only).
I'm new at this so maybe I'm making some big mistakes- Does each fixture need a separte vent if they are with in 6 lateral feet of the vent or is there a problem with the sink drain being the highest point in this diagram?
Thanks for the feedback.
The fixture vents as shown are all vented thru the pit. The pit then serves as the vent for all fixtures. The vent for the pit in the diagram goes up vertically 7ft and then ties into a 2" vent line that exits the roof of the house(this vent would serve the pit only).
I'm new at this so maybe I'm making some big mistakes- Does each fixture need a separte vent if they are with in 6 lateral feet of the vent or is there a problem with the sink drain being the highest point in this diagram?
Jadnashua
Retired Defense Industry Engineer xxx
A vent that is low enough to become a drain if something becomes plugged, is not a vent! Vents can only be combined 6" above the flood plane of the highest thing running into it or 42" (your local inspector may want 42" even if 6" is less than that). So, no, you can't combine the vents from the other fixtures through the pit. The shower and toilet would need a vent that goes above the sink, make a connection at the proper elevation, then connect to the vent of the pit.
Thanks jadnashua.
If I understand you correctly because the pit is lower than the entrance of the drain at the fixtures it will not correctly work as a vent.
And 6" (or 42") above the flood plane of the highest thing running into it would be above the sink.
With that being the case what if I ran vents for each of the fixtures individually with about a 42"+ vertical run then tied them all into a common vent line- as shown below- would that work?
If I understand you correctly because the pit is lower than the entrance of the drain at the fixtures it will not correctly work as a vent.
And 6" (or 42") above the flood plane of the highest thing running into it would be above the sink.
With that being the case what if I ran vents for each of the fixtures individually with about a 42"+ vertical run then tied them all into a common vent line- as shown below- would that work?
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Shacko
Master Plumber-Gas Fitter
Ejector Vent
Most codes do not allow fixture vents to tie into the vent off the ejector pit. You have to vent the fixtures and tie them into a vent thats not connected to the sump, with your set-up that should be 2inch.
"If all else fails, read the directions"
Most codes do not allow fixture vents to tie into the vent off the ejector pit. You have to vent the fixtures and tie them into a vent thats not connected to the sump, with your set-up that should be 2inch.
"If all else fails, read the directions"
hj
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vents
quote; The fixture vents as shown are all vented thru the pit. The pit then serves as the vent for all fixtures. The vent for the pit in the diagram goes up vertically 7ft and then ties into a 2" vent line that exits the roof of the house(this vent would serve the pit only).
The pit vent does NOT vent any fixtures. They need their own vents whether individual or combined, but connecting them to the pit's vent, (and doing it properly), is done most of the time.
quote; The fixture vents as shown are all vented thru the pit. The pit then serves as the vent for all fixtures. The vent for the pit in the diagram goes up vertically 7ft and then ties into a 2" vent line that exits the roof of the house(this vent would serve the pit only).
The pit vent does NOT vent any fixtures. They need their own vents whether individual or combined, but connecting them to the pit's vent, (and doing it properly), is done most of the time.
Herk
Plumber
The sump vent needs to be completely separate from the other vents.
Each fixture needs to be vented properly. (note: I said, "properly.")
If you hook the sump vent to other fixture vents, the pump will suck the traps dry. It removes water from the sump very quickly and puts negative pressure on the vent. Trust me, I've seen plenty of bad installs and that's why they didn't work.
Each fixture needs to be vented properly. (note: I said, "properly.")
If you hook the sump vent to other fixture vents, the pump will suck the traps dry. It removes water from the sump very quickly and puts negative pressure on the vent. Trust me, I've seen plenty of bad installs and that's why they didn't work.
hj
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sump
I have also seen plenty of bad installs, but NEVER one where the pump sucked traps dry because its vent was tied to the fixture vents, AS LONG as it was also connected to an active vent. We NEVER installed a separate vent for the sump and the fixtures, and ALWAYS connected it to the buildings vent system.
I have also seen plenty of bad installs, but NEVER one where the pump sucked traps dry because its vent was tied to the fixture vents, AS LONG as it was also connected to an active vent. We NEVER installed a separate vent for the sump and the fixtures, and ALWAYS connected it to the buildings vent system.
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