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ASSE - 1051

Performance Requirements for Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems

active, Most Current
Organization: ASSE
Publication Date: 1 June 2021
Status: active
Page Count: 24
scope:

Description

These devices consist of a one-way valve designed to allow air to enter the plumbing drainage system when a pressure less than atmospheric develops. The device closes and seals by gravity under zero (0) differential pressure (static condition) and under positive pressure. These devices prevent sewer gases from entering a building. The device consists of a hooded or shielded body which contains a normally closed movable sealing assembly which seats and seals air flow when closed and allows air to enter when open.

Temperature Range

These devices shall function at temperatures from -40.0 °F to 150.0 °F (-40.0 °C to 65.6 °C).

Rating

These devices shall, at a minimum, pass the air flow rate according to Table 1 at -1.0 inch (-25.4 mm) water column.

Note: This corresponds to half the size of a 2-inch (50.8mm) trap diameter for when a trap potentially evaporates.

Pressure Range

Devices are designed to operate within a range of -1.0 inch (-25.4mm) to 1.57 in (40 mm) of water column.

Document History

1051
June 1, 2021
Performance Requirements for Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems
Description These devices consist of a one-way valve designed to allow air to enter the plumbing drainage system when a pressure less than atmospheric develops. The device closes and seals by...
May 1, 2009
Performance Requirements for Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems
Description These devices consist of a one-way valve designed to allow air to enter the plumbing drainage system when a pressure less than atmospheric develops. The device closes and seals by...
August 1, 2002
Performance Requirements for Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems
A description is not available for this item.
January 1, 1996
Performance Requirements for Air Admittance Valves for Plumbing Drainage Systems - Fixture and Branch Devices
A description is not available for this item.
January 1, 1990
Performance Requirements for Air Admittance Valves for Plumbing Drainage Systems Fixture and Branch Devices
A description is not available for this item.

References

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