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ASSE (Plumbing) 1049-2021

Performance Requirements for Individual and Branch Type Air Admittance Valves for Chemical Waste Systems
standard by American Society of Sanitary Engineering, 07/01/2021

ASSE (Plumbing) 1051-2021

Performance Requirements for Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems
standard by American Society of Sanitary Engineering, 07/01/2021