Studor - 20302 - Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve … Hot Water System Residential sewage pumping (basements

Residential sewage pumping (basements

Length: 43 Inches

Single relay astronomical timer module

Helps restore filtration tank performance without replacing the entire system

with power disconnected and all electrical work completed by a qualified professional

Studor - 20302 - Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve … Hot Water System Residential sewage pumping (basementsBrand: STUDOR by IPS Corporation Manufacturer Part Number: 20302 Big Frog Supply SKU: 20302 Product Overview The STUDOR Maxi Vent 20302 is an air admittance valve for compatible 3 inch and 4 inch drain, waste, and vent systems. It can serve as an individual, branch, circuit, or stack vent where approved by the applicable plumbing code. When a fixture discharges and creates negative pressure in the drainage system, the one way valve opens to admit air.