[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-656658-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-656658-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","air-admittance-valves-technical-note-version-5-july-2023","Air admittance valves - Technical Note - Version 5 -July 2023","","Technical note providing guidance for the correct use and installation of air admittance valves (AAVs) in Western Australian sanitary and drainage plumbing work. Defines permitted AAV applications including trap venting, group venting, stack venting, upstream and downstream drainage venting requirements, and limits on where AAVs can be used. Specifies siting and clearance conditions, installation orientation and air cushion, required connections to AS/NZS 3500.2:2021, and airflow selection and sizing methods using fixture-unit loading tables and worked examples.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/air-admittance-valves-technical-note-version-5-july-2023/656658/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/air-admittance-valves-technical-note-version-5-july-2023/656658.png","ImageObject",300,407,{"name":42,"@type":43},"Valentina","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-01","2026-10-25",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",7,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"Where are air admittance valves (AAVs) permitted to be used?","Question",{"text":63,"@type":64},"AAVs are permitted as a trap vent, group vent, stack vent (for certain stack heights), upstream drainage vent, and downstream drainage vent when connected to a vacuum sewer system.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What are key requirements for locating and protecting AAVs?",{"text":68,"@type":64},"AAVs must be accessible for repair or replacement, maintain specified airflow performance, have ventilation openings in wall or roof spaces, avoid solvent-contaminated air, be clear of insulation, meet ambient temperature limits, and be protected from insect entry, ultra-violet rays (when installed outside), and mechanical damage.",{"name":70,"@type":61,"acceptedAnswer":71},"How are AAVs selected and sized for airflow capacity?",{"text":72,"@type":64},"AAVs must have determined airflow capacity not less than AS/NZS 3500.2:2021 tables. The required L/s is shown on each valve and can be calculated from fixture-unit loading of discharge pipes, using the provided sizing examples and Table 6.10.2(A) or Table 6.10.2(B) depending on the application.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},656658,1793037320,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,105,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},5,"Comic",60,"comic",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":103,"slug":104},6,50,"technology",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":97,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":102,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":102,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":143,"read_time":144},13056703020460,"https://ap-avatar.wpscdn.com/avatar/be000253dac470eee5d?_k=1778207105932848923","Government of Western Australia  \nDepartment of Mines, Industry Regulation and Safety Plumbers Licensing Board  \nTechnical Note  \nTechnical Advice Line 1300 360 897 [www.dmirs.wa.gov.au/building-and-energy](www.dmirs.wa.gov.au/building-and-energy)  \nAir admittance valves  \nThis technical note has been developed as a guide to the Western Australian plumbing industry for the correct use and installation of air admittance valves (AAVs) for sanitary and drainage plumbing work.  \nPermitted uses for AAVs  \n► As a trap vent in:  \n(a) a fully ventilated stack system of plumbing;  \n(b) a fully ventilated modified stack system of plumbing;  \n(c) a single stack system of plumbing; or  \n(d) a sanitary plumbing system-where a fixture discharge pipe exceeds the maximum permitted distance.  \n► As a group vent in:  \n(a) a fully ventilated modified stack system of plumbing; or  \n(b) a sanitary plumbing system-where a common discharge pipe connecting a group of fixtures requires a vent.  \n► As a stack vent in:  \n(a) any sanitary stack system of plumbing not more than nine (9) floor levels in height, excluding reduced velocity aerator stack systems.  \n► As an upstream drainage vent in:  \n(a) any drainage system branch drain that requires a vent.  \n► As a downstream drainage vent in:  \n(a) any sanitary drainage system connected to a vacuum sewer system.  \nAAVs shall only be used in sanitary drainage systems that have at least one (1) open upstream vent off the main drain. Where three (3) or more buildings on an allotment discharge to a main drain, the drainage system of each building shall have at least one (1) open upstream vent.  \nThe upstream vent shall be sized as a drainage vent in accordance with AS/NZS 3500 . 2:2021, clause 3.9.3 and shall be at least DN 50 in size.  \nAAVs shall not be used for the upstream venting of the main drain.  \nLocating AAVs  \n► AAVs shall be located so that:  \n(a) they are accessible for repair or replacement;  \n(b) the replacement air flow as specified by the flow rate of the valve is maintained;  \n(c) when within a wall or roof space, ventilation openings are provided;  \n(d) they are not installed where air is contaminated with solvents;  \n(e) the valve shall be clear of any ceiling or wall insulation;  \n(f) the ambient air temperature does not vary below 0 °C or above 60 °C unless the AAV is designed to perform outside these temperatures; or  \n(g) they are protected from insect entry, ultra-violet rays if installed outside and mechanical damage.  \nLevel 1, Mason Bird Building, 303 Sevenoaks Street (entrance Grose Avenue), Cannington WA 6107 Postal: Locked Bag 100, East Perth WA 6892  \nVers ion 5-Ju ly 2023  \nVersion 5-July 2023  \nInstalling AAVs  \n► When installing an AAV, other than those that form an integral part of a fixture trap, the valve shall:  \n(a) be installed upright within 5° of the vertical;  \n(b) have a 100 mm minimum air cushion from thesoffit of the graded pipe to the inlet of the valve;  \n(c) for trap vents and group vents be no more than 1000 mm below the flood level of the lowest fixture served by the AAV, as shown in diagrams  \n1, 2, 3 and 4;  \n(d) connect to a fixture or common discharge pipe in accordance with AS/NZS 3500. 2:2021, clause [8.5.1.1](8.5.1.1); and  \n(e) connect to the sanitary piping in accordance with the manufacturer’s instructions.  \nSelecting AAVs  \nAAVs shall have a determined airflow capacity not less  \nthan that shown in AS/NZS 3500. 2:2021, tables 6 .10. 2(A) and 6 .10. 2(B) .  \nThe determined airflow in litres/second (L/s) is indicatedon each valve along with all other marking requirements of the WaterMark Certification Scheme.  \nSizing examples of AAVs  \n► As a trap vent:  \nAn AAV with a minimum airflow capacity of 1 L/s is suitable for any trap vent size.  \nThe minimum air flow capacity of 1 L/s is suitable for a maximum of six (6) fixture units. The maximum fixture unit rating assigned to any single fixture, for example a toilet pan with a flush valve.  \n► As a gr","cbCaislvhW6S0FE2","https://ap.wps.com/l/cbCaislvhW6S0FE2","pdf",7742351,"English","# Permitted uses for AAVs\n# Locating AAVs\n# Installing AAVs\n# Selecting AAVs\n# Sizing examples of AAVs\n## Table 6.10.2(A)\n## Table 6.10.2(B)","[{\"question\":\"Where are air admittance valves (AAVs) permitted to be used?\",\"answer\":\"AAVs are permitted as a trap vent, group vent, stack vent (for certain stack heights), upstream drainage vent, and downstream drainage vent when connected to a vacuum sewer system.\"},{\"question\":\"What are key requirements for locating and protecting AAVs?\",\"answer\":\"AAVs must be accessible for repair or replacement, maintain specified airflow performance, have ventilation openings in wall or roof spaces, avoid solvent-contaminated air, be clear of insulation, meet ambient temperature limits, and be protected from insect entry, ultra-violet rays (when installed outside), and mechanical damage.\"},{\"question\":\"How are AAVs selected and sized for airflow capacity?\",\"answer\":\"AAVs must have determined airflow capacity not less than AS/NZS 3500.2:2021 tables. The required L/s is shown on each valve and can be calculated from fixture-unit loading of discharge pipes, using the provided sizing examples and Table 6.10.2(A) or Table 6.10.2(B) depending on the application.\"}]","Air admittance valves - Technical Note - Version 5 -July 2023 | PDF",1792969858,15]