Sharing our Guidance
Air Admittance Valves
AIR ADMITTANCE VALVES
AGENDA
What is an Air Admittance Valve (AAV)?
AAV History
AAV Benefits
Understanding AAVs
Code Appro...
X
AIR ADMITTANCE VALVES
Air admittance valves (AAVs) are pressure-activated, one-way
mechanical vents, used in a plumbing ...
X
AIR ADMITTANCE VALVES
Sture Ericson developed the air admittance valve in Sweden in the
early 1970s. He introduced the v...
X
AIR ADMITTANCE VALVES
Reduces roof penetration
Reduces vent pipe roof flashings that eventually leak
Reduces unsightly v...
X
AIR ADMITTANCE VALVES
Air admittance valves must be installed in accordance with the
requirements of the IPC where this ...
X
AIR ADMITTANCE VALVES
2. Stack vents and vent stacks shall be permitted to terminate to stack-
type air admittance valve...
X
AIR ADMITTANCE VALVES
8. Stack-type air admittance valves shall be located at least 6 inches above
the flood level rim o...
X
AIR ADMITTANCE VALVES
Code Approvals
08/06/13 9
State IPC IRC UPC NSPC
Approval
Status
Alabama X X     Approved
Alaska  ...
X
AIR ADMITTANCE VALVES
Code Approvals
08/06/13 10
State IPC IRC UPC NSPC Approval Status
Maine X X     Not Approved
Maryl...
X
AIR ADMITTANCE VALVES
Code Approvals
08/06/13 11
State IPC IRC UPC NSPC Approval Status
Oregon     X   Approved
Pennsylv...
X
AIR ADMITTANCE VALVES
Spec Sheet Example
08/06/13 12
AIR ADMITTANCE VALVES
QUESTIONS? DISCUSSION?
THANK YOU.
Upcoming SlideShare
Loading in …5
×

111109 air admittance valves

2,323 views

Published on

Published in: Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
2,323
On SlideShare
0
From Embeds
0
Number of Embeds
19
Actions
Shares
0
Downloads
7
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

111109 air admittance valves

  1. 1. Sharing our Guidance Air Admittance Valves
  2. 2. AIR ADMITTANCE VALVES AGENDA What is an Air Admittance Valve (AAV)? AAV History AAV Benefits Understanding AAVs Code Approvals Spec Sheet Example 08/06/13 2
  3. 3. X AIR ADMITTANCE VALVES Air admittance valves (AAVs) are pressure-activated, one-way mechanical vents, used in a plumbing system to eliminate the need for conventional pipe venting and roof penetrations. A discharge of wastewater causes the AAV to open, releasing the vacuum and allowing air to enter the plumbing vent pipe for proper escape of sewer gas and maintaining the trap seal. AAVs are typically made from polyvinyl chloride (PVC) plastic materials with ethylene propylene diene monomer (EPDM) rubber valve diaphragms. Valves come in two sizes: one for fixture venting and a larger size for system venting. The valves fit standard diameter pipes ranging from 1-1/4 to 4 inches. What is an Air Admittance Valve (AAV)? 08/06/13 3
  4. 4. X AIR ADMITTANCE VALVES Sture Ericson developed the air admittance valve in Sweden in the early 1970s. He introduced the valve to the United States in 1986 and was instrumental in the development of the ASSE Performance Standards 1050 and 1051, as well as gaining code approvals in state and model codes. In 1988, Studor, Inc. was established as the distributor for North America. Studor, Inc. was acquired by IPS Corporation in 1998. AAV History 08/06/13 4
  5. 5. X AIR ADMITTANCE VALVES Reduces roof penetration Reduces vent pipe roof flashings that eventually leak Reduces unsightly vent pipes Prevents vermin and pests from entering the building through open vent pipes Reduces pollution of the environment by sewer gas, and prevents sewer gases from being drawn into air conditioning units and air handlers and polluting habitable spaces Provides architects and engineers freedom of layout and design Reduces the number of fire stopping devices Solves problem to vent island sinks, wet bars and other fixtures in difficult locations AAV Benefits 08/06/13 5
  6. 6. X AIR ADMITTANCE VALVES Air admittance valves must be installed in accordance with the requirements of the IPC where this code is in effect and with the installation standards of the specific manufacturer. The requirements of the major manufacturers are very similar to the requirements of the IPC. Following are general requirements for installing an air admittance valve: 1. Individual or branch-type air admittance valves may be used for venting individual fixtures, branch fixtures, and circuited fixtures. By this requirement, air admittance valves are not permitted for venting combination drain and vent systems and wet-vented systems. Air admittance valves are not permitted to vent these systems because of the possibility of positive pressure in combination drain and vent systems and wet-vented systems. Understanding AAVs 08/06/13 6
  7. 7. X AIR ADMITTANCE VALVES 2. Stack vents and vent stacks shall be permitted to terminate to stack- type air admittance valves. 3. Individual and branch-type air admittance valves shall only vent fixtures that are on the same floor level. These fixtures shall connect to a horizontal branch drain. 4. Air admittance valves shall only vent stacks and systems that are a maximum of four branch intervals from the top of the stack. 5. Drainage systems and stacks that are four branch intervals from the top of the stack shall be provided with a relief vent. This relief vent shall extend to the venting system that extends to the outdoors. 6. Stack-type air admittance valves shall not serve as the vent terminal for drainage systems that exceed six branch intervals. 7. Individual and branch-type air admittance valves shall be located a minimum of 4 inches above the fixture drain. Understanding AAVs 08/06/13 7
  8. 8. X AIR ADMITTANCE VALVES 8. Stack-type air admittance valves shall be located at least 6 inches above the flood level rim of the highest fixture drain. 9. The valve shall be located within a ventilated space. 10. A minimum of one vent shall extend to the outdoors. Understanding AAVs 08/06/13 8
  9. 9. X AIR ADMITTANCE VALVES Code Approvals 08/06/13 9 State IPC IRC UPC NSPC Approval Status Alabama X X     Approved Alaska     X   Not Approved Arizona X   X   Approved Arkansas   X     Approved California     X   Partial Approval Colorado X X     Approved Connecticut X       Approved Delaware X X     Approved District of Columbia X X     Approved Florida X       Approved Georgia X X     Approved Hawaii X       Approved Idaho   X X    Approved Illinois         Not Approved Indiana   X X   Approved Iowa     X   Not Approved Kansas X X     Partial Approval Kentucky         Not Approved Louisiana         Not Approved
  10. 10. X AIR ADMITTANCE VALVES Code Approvals 08/06/13 10 State IPC IRC UPC NSPC Approval Status Maine X X     Not Approved Maryland       X Approved Appendix  E 2005 edition Massachusetts         Not Approved Michigan X X     Approved Minnesota         Not Approved Mississippi X X     Approved Missouri     X   Partial Approval Montana     X   Not Approved Nebraska X X     Not Approved Nevada     X   Partial Approval New Hampshire   X     Approved New Jersey       X Approved Appendix  E 2005 edition New Mexico     X   Partial Approval New York X X     Approved except  NYC North Carolina X X     Approved North Dakota     X   Not Approved Ohio X       Approved Oklahoma X       Approved
  11. 11. X AIR ADMITTANCE VALVES Code Approvals 08/06/13 11 State IPC IRC UPC NSPC Approval Status Oregon     X   Approved Pennsylvania X X     Approved except  Philadelphia Rhode Island X X     Approved South Carolina X X     Approved South Dakota     X   Partial Approval Tennessee X       Approved except  Shelby County Texas X X X   Approved (limited  Houston approval) Utah X X     Approved Vermont X       Approved Virginia X X     Approved Washington     X   Partial Approval West Virginia X X     Approved Wisconsin X       Approved Wyoming   X X   Not Approved Approval status as of December 31, 2010 IPC=Internatinal Plumbing Code IRC=International Residential Code UPC=Uniform Plumbing Code NSPC=National Standard Plumbing Code Note: Plumbing Codes are subject to change, please verify with your local code  officials before installing AAVs 
  12. 12. X AIR ADMITTANCE VALVES Spec Sheet Example 08/06/13 12
  13. 13. AIR ADMITTANCE VALVES QUESTIONS? DISCUSSION? THANK YOU.

×