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Old 08-19-2015, 05:01 PM   #1
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Hello there... I want to install a three piece bathroom in the basement and to do so I need to pump it roughly 4 ft to the waste stack connection. I found a company that makes compact macerator pumps that does not require digging into the foundation. It does require a proper vent to work efficiently. Now the work is in the basement with no way of running a vent pipe to the roof. Easily. Is an air admittance valve allowable to code ? It seems the LI NY Town of Hempstead code states when using a pump to move waste you need to have a separate vent and to not connect to existing vents on gravity drains. So is an aav allowed here? Thanks!!
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Old 08-19-2015, 05:20 PM   #2
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I have no experience with NY codes, but AAV's are typically not allowed on pumps. That is not their purpose (design), they are designed to only vent fixtures.

In my experience, most codes state that pumps need a separate vent. However, your inspector will have the final say- I sometimes do tie the pump vent back to the gravity vent but the sizing must be correct to handle the increased load.
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Old 08-19-2015, 05:22 PM   #3
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Quote:
Originally Posted by TheEplumber
I have no experience with NY codes, but AAV's are typically not allowed on pumps. That is not their purpose (design), they are designed to only vent fixtures. In my experience, most codes state that pumps need a separate vent. However, your inspector will have the final say- I sometimes do tie the pump vent back to the gravity vent but the sizing must be correct to handle the increased load.
Thanks. The pump only calls for a 1-1/2" vent line. The code says 4".
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Old 08-19-2015, 09:47 PM   #4
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So the pump I want to use is Santiflo. It seems to be the most logical in my case. But what have others done to connect to a proper vent? Running a dedicated vent to the roof is almost impossible. Any suggestions?

Thanks!
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Old 08-19-2015, 09:53 PM   #5
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Anyone Install a Santiflo Waste Pump?


Hi-
I would like to install a bathroom in my basement and the waste stack is roughly 4ft above grade. A Santiflo pump seems to be the answer to my prayers since I won't have to cut into the foundation. My question has to do with connection to a proper vent. NY code states a separate 4" vent to the roof is required. I'm in the basement. This would mean cutting into walls all the way up to the attic. What have you done with your install? All the tips and solutions are appreciated!!

Thanks!
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Old 08-20-2015, 05:58 AM   #6
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4" Vent? I'll let a licensed plumber answer that one---I would have thought 2" would be the size----do you have a link to that unit?
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Old 08-20-2015, 06:02 AM   #7
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Merger two threads---sorry about any confusion---
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Old 08-20-2015, 07:16 AM   #8
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Quote:
Originally Posted by oh'mike
4" Vent? I'll let a licensed plumber answer that one---I would have thought 2" would be the size----do you have a link to that unit?
yeah that's what I thought! The pump states an 1-1/2" vent pipe.
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Old 08-20-2015, 07:52 AM   #9
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Code usually follows the manufacturers specifications --

The code you looked at--was it for a toilet vent or for an ejection pump?

E-Plumber and ghostmaker are very knowledgeable on codes----as are the other plumbers here---I bet you were not looking at the code for a pump -
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Old 08-20-2015, 04:25 PM   #10
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Not in New York, They follow there own code.
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Old 08-20-2015, 04:27 PM   #11
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So how do I run this? To the roof??
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Old 08-20-2015, 04:42 PM   #12
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You need to pull a plumbing permit. I would suggest talking to your local inspector. He or She will have the answers you seek.
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