Studor - 20302 - Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve … Hot Water System Inspect the spring

Inspect the spring

Single relay astronomical timer module

This venting works with V Series Rinnai & RL Series Rinnai indoor units

Watts Water Pressure Reducing Valve include characteristics like:

Studor - 20302 - Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve … Hot Water System Inspect the springBrand: 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.