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Studor 20297 Air Admittance Valve
$28.95
Studor 20297 ABS Air Admittance Valve, Black
- Active carbon filter designed to eliminate bad odors produced by the drainage system
- Designed for use on septic tanks and lift stations; fits 3 or 4 inch piping
- Install externally anywhere the odor from existing vents presents a problem; no specialist installation required
Description
Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. No. 1ATD5 vents up to 500 DFUs on a stack; No. 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. No. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors.
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