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Old 12/28/07, 4:25 PM
Russell Truluck Russell Truluck is offline
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Location: Travelers Rest, SC
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Default Air admittance valves
I just inspected a house that had 3 air admittance values on the same waste pipe along a 20' length. There are in a basement ceiling right up against the floor insulation. Is this okay? Also, the 1 1/2" waste pipe reduces down to a 1" waste pipe as it exits the foundation.

Thanks for any help,
Russell Truluck
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Old 12/28/07, 4:47 PM
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Michael Larson Michael Larson is offline
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Default Re: Air admittance valves
Can you day "do over"?
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Old 12/29/07, 4:24 PM
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Jack L. Gilleland Jack L. Gilleland is offline
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Default Re: Air admittance valves
I'm pretty sure my daddy (50 yrs master plbr) said you can't bottleneck a drain or a vent. And don't they believe in vents.


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