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White round plastic air admittance valve with silicone membrane

Studor

Studor 20302 air admittance valve

SKU CH-N19A-WV8FA

Air admittance valve meeting ANSI/ASSE 1050 and 1051 standards with silicone membrane for 3 in and 4 in pipe connections

  • ColorWhite
  • Meets ANSI/ASSE 1050 and 1051 standards for reliable venting
  • ABS valve body with silicone membrane resists corrosion and wear
  • Fits 3 in and 4 in pipe and drain sizes for versatile installation
  • Slip connection allows quick, tool-free fitting
  • White plastic finish blends with standard plumbing fixtures

Studor 20302 air admittance valve

The Studor 20302 is an air admittance valve designed for plumbing drainage systems. It allows air to enter the pipe when negative pressure occurs, preventing trap siphonage without a traditional vent stack. The unit fits 3 in and 4 in pipe and drain sizes with a slip connection. It meets ANSI/ASSE 1050 and 1051 standards.

Installation uses a slip connection on 3 in

Installation is straightforward using the slip connection on compatible 3 in or 4 in pipes. No specialised tools are required beyond standard plumbing supplies. Common issues include ensuring the valve is accessible for maintenance and verifying local code acceptance, as some jurisdictions restrict air admittance valve use.

Handles venting for 3 in and 4 in drainage lines

The valve provides venting capacity for 3 in and 4 in drainage lines, balancing pressure during fixture discharge. It runs out of capacity if installed on pipe sizes outside the 3 in to 4 in range or where local codes prohibit air admittance valves entirely. The silicone membrane and ABS construction resist corrosion in normal drain environments.

Highlights

  • Meets ANSI/ASSE 1050 and 1051 standards for reliable venting
  • ABS valve body with silicone membrane resists corrosion and wear
  • Fits 3 in and 4 in pipe and drain sizes for versatile installation
  • Slip connection allows quick, tool-free fitting
  • White plastic finish blends with standard plumbing fixtures

Specifications

ColorWhite
BrandSTUDOR

Questions about this item

How can I confirm the Studor 20302 valve is functioning correctly after installation?

The valve operates silently under normal drainage flow; absence of gurgling sounds and no sewer odour at fixtures indicate the silicone membrane is sealing and venting properly.

What components are included with the Studor 20302 and what must be sourced separately?

The valve body with ABS construction and silicone membrane is supplied; solvent cement and any required slip-joint adapters for 3 in or 4 in pipe connections are not included.

Which version of the Studor 20302 should I select for a 3 in or 4 in drainage stack?

This single model fits both 3 in and 4 in pipe sizes via slip connection and meets ANSI/ASSE 1050 and 1051 standards for residential and commercial venting.

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