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White plastic round air admittance valve with PVC adapter

Studor

Studor 20301 Mini-Vent Air Admittance Valve 2 in White

SKU CH-HYJ1-FC401

A 2-inch Mini-Vent air admittance valve meeting ANSI/ASSE 1050 and 1051 standards, supplied with a 1-1/2 in./2 in. PVC DWV adapter

  • Prevents sewer gas entry with ANSI/ASSE 1050/1051 certified valve
  • Fits 2 in. and 1-1/2 in. PVC DWV systems using included adapter
  • White plastic construction resists corrosion in plumbing installations
  • Compact 2-5/8 in. round design suits tight venting spaces
  • New Studor 20301 model ready for universal DWV compatibility

Product identity

The Studor 20301 Mini-Vent is an air admittance valve designed for plumbing systems that require venting without a traditional roof penetration. It suits residential and light commercial installations where space or structural constraints make conventional venting impractical.

Upgrade context

This valve replaces open vent pipes that run through roofs or walls, eliminating flashing work and potential leak points. The jump is worthwhile when retrofitting fixtures in basements, islands or additions where connecting to the main stack is difficult or costly.

Installation notes

The unit includes a 1-1/2 in. / 2 in. PVC DWV adapter for direct solvent-weld connection to standard waste lines. It must be installed vertically and remain accessible per code; common errors include horizontal mounting, burying the valve inside walls without an access panel, or omitting the required adapter for the pipe size used.

Highlights

  • Prevents sewer gas entry with ANSI/ASSE 1050/1051 certified valve
  • Fits 2 in. and 1-1/2 in. PVC DWV systems using included adapter
  • White plastic construction resists corrosion in plumbing installations
  • Compact 2-5/8 in. round design suits tight venting spaces
  • New Studor 20301 model ready for universal DWV compatibility

Specifications

BrandSTUDOR

Questions about this item

What size PVC DWV pipe does the included adapter connect to?

The valve ships with a 1-1/2 in / 2 in PVC DWV adapter for solvent-weld connection to either size of DWV pipe.

How is the Mini-Vent secured to the plumbing stack?

Solvent-weld the supplied adapter to the vent pipe, then press the valve body into the adapter until it seats.

Will the sealing membrane need replacement over time?

The membrane is not user-serviceable; if the valve fails to open or close, replace the entire unit.

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