Studor 20300 Mini-Vent with ABS Adapter 1 1/2-Inch or 2-Inch Connection

The Studor Mini-Vent with ABS ConnectorThe Studor Mini-Vent with ABS Connector, fits piping systems of 40mm (1 1/2") and 50mm (2") diameters. The Studor Mini-Vent can serve up to 20 drainage fixture units (DFUs) including water closets, i.e., more than a normal bathroom group. The Studor Air Admittance Valve replaces expensive and complex plumbing vent systems that penetrate roofs of most homes, offices, factories and warehouses. The vent pipes allow air to enter the plumbing systems and equalize pressure when water drains out of the system--maintaining the "water seal" that prevents sewer gases from entering the building.Suitable for installation on PVC or ABS pipes. Instructions inside.