{"id":537,"date":"2025-11-22T19:47:42","date_gmt":"2025-11-23T01:47:42","guid":{"rendered":"https:\/\/plumbing101.i234.me\/wordpress\/?p=537"},"modified":"2025-11-16T07:11:49","modified_gmt":"2025-11-16T13:11:49","slug":"best-plumbing-layout-for-dishwasher-disposal-and-aav","status":"publish","type":"post","link":"https:\/\/plumbing101.i234.me\/wordpress\/best-plumbing-layout-for-dishwasher-disposal-and-aav\/","title":{"rendered":"Best Plumbing Layout for Dishwasher, Disposal, and AAV?"},"content":{"rendered":"<article class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"request-WEB:a047470e-a657-48c6-8096-def381119322-4\" data-testid=\"conversation-turn-10\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] thread-sm:[--thread-content-margin:--spacing(6)] thread-lg:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] thread-lg:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\">\n<div class=\"flex max-w-full flex-col grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"a63fd3fd-9ffd-4c94-930c-f0b298fcd8b1\" data-message-model-slug=\"gpt-5-1\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\">\n<div class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\">\n<p data-start=\"456\" data-end=\"1018\"><strong data-start=\"456\" data-end=\"469\">Question:<\/strong><br data-start=\"469\" data-end=\"472\" \/><em data-start=\"472\" data-end=\"1018\">I\u2019m setting up a 2&#8243; drain in front of the <a href=\"https:\/\/powersadvisor.com\/wp-content\/uploads\/2023\/12\/Does-Dishwasher-Have-Garbage-Disposal-The-Ultimate-Guide.webp\">dishwasher and disposal outlet<\/a>. Due to other plumbing and HVAC obstructions, I can\u2019t move either of these fixtures. I also need to install an air admittance valve (AAV) and a garbage disposal. I\u2019m unsure which layout is best: the first setup with a bunch of 45-degree angles, a sanT, and the AAV high in the back left, or the second setup with just a couple of 45s and a T for the AAV along the horizontal? I can\u2019t place the AAV in the back right corner because there&#8217;s a soap dispenser. Any suggestions?<\/em><\/p>\n<hr data-start=\"1020\" data-end=\"1023\" \/>\n<p data-start=\"1025\" data-end=\"1180\"><strong data-start=\"1025\" data-end=\"1036\">Answer:<\/strong><br data-start=\"1036\" data-end=\"1039\" \/>In this situation, the <strong data-start=\"1062\" data-end=\"1141\">second option with a couple of 45s and a T for the AAV along the horizontal<\/strong> is likely your best bet. Here&#8217;s why:<\/p>\n<ul data-start=\"1182\" data-end=\"1647\">\n<li data-start=\"1182\" data-end=\"1339\">\n<p data-start=\"1184\" data-end=\"1339\"><strong data-start=\"1184\" data-end=\"1198\">Simplicity<\/strong>: The fewer bends and fittings you use, the better. Extra angles can cause flow restrictions, leading to clogs and less efficient drainage.<\/p>\n<\/li>\n<li data-start=\"1340\" data-end=\"1525\">\n<p data-start=\"1342\" data-end=\"1525\"><strong data-start=\"1342\" data-end=\"1359\">Accessibility<\/strong>: Keeping the AAV along the horizontal makes it more accessible for future maintenance and adjustments. It also reduces the risk of clogging or blockage from bends.<\/p>\n<\/li>\n<li data-start=\"1526\" data-end=\"1647\">\n<p data-start=\"1528\" data-end=\"1647\"><strong data-start=\"1528\" data-end=\"1542\">Efficiency<\/strong>: Plumbing with fewer components often works more efficiently, and you\u2019ll avoid unnecessary complexity.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1649\" data-end=\"1916\">The first setup, while functional, uses a more complicated arrangement with more potential for flow restriction due to the numerous 45-degree angles. Also, the placement of the AAV high in the back left could create potential issues with water flow and accessibility.<\/p>\n<p data-start=\"1918\" data-end=\"2084\">In this case, <strong data-start=\"1932\" data-end=\"1959\">simplifying your layout<\/strong> with just the necessary components and positioning the AAV horizontally will result in a cleaner and more effective system.<\/p>\n<p data-start=\"2086\" data-end=\"2191\">For more tips on drain layout and proper installation, visit <a class=\"decorated-link\" href=\"https:\/\/plumbing101.i234.me\" target=\"_new\" rel=\"noopener\" data-start=\"2147\" data-end=\"2190\">Plumbing 101<\/a>.<\/p>\n<hr data-start=\"2193\" data-end=\"2196\" \/>\n<p data-start=\"2198\" data-end=\"2270\" data-is-last-node=\"\" data-is-only-node=\"\">I\u2019m Chris Mayer, writing for <a class=\"decorated-link\" href=\"https:\/\/plumbing101.i234.me\" target=\"_new\" rel=\"noopener\" data-start=\"2226\" data-end=\"2269\">Plumbing 101<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-10\" src=\"https:\/\/plumbing101.i234.me\/wordpress\/wp-content\/uploads\/2025\/09\/2025-09-14_10-53-52-294x300.png\" alt=\"\" width=\"294\" height=\"300\" srcset=\"https:\/\/plumbing101.i234.me\/wordpress\/wp-content\/uploads\/2025\/09\/2025-09-14_10-53-52-294x300.png 294w, https:\/\/plumbing101.i234.me\/wordpress\/wp-content\/uploads\/2025\/09\/2025-09-14_10-53-52.png 366w\" sizes=\"auto, (max-width: 294px) 100vw, 294px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Question:I\u2019m setting up a 2&#8243; drain in front of the dishwasher and disposal outlet. Due to other plumbing and HVAC obstructions, I can\u2019t move either of these fixtures. I also need to install an air admittance valve (AAV) and a garbage disposal. I\u2019m unsure which layout is best: the first setup with a bunch of&hellip; <a class=\"more-link\" href=\"https:\/\/plumbing101.i234.me\/wordpress\/best-plumbing-layout-for-dishwasher-disposal-and-aav\/\">Continue reading <span class=\"screen-reader-text\">Best Plumbing Layout for Dishwasher, Disposal, and AAV?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":10,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_wpscp_schedule_draft_date":"","_wpscp_schedule_republish_date":"","_wpscppro_advance_schedule":false,"_wpscppro_advance_schedule_date":"","_wpscppro_dont_share_socialmedia":null,"_wpscppro_custom_social_share_image":0,"_facebook_share_type":"default","_twitter_share_type":"default","_linkedin_share_type":"default","_pinterest_share_type":"default","_linkedin_share_type_page":"","_instagram_share_type":"default","_medium_share_type":"default","_threads_share_type":"default","_google_business_share_type":"default","_selected_social_profile":[],"_wpsp_enable_custom_social_template":false,"_wpsp_social_scheduling":{"enabled":false,"datetime":null,"platforms":[],"status":"template_only","dateOption":"today","timeOption":"now","customDays":"","customHours":"","customDate":"","customTime":"","schedulingType":"absolute"},"_wpsp_active_default_template":true},"categories":[79],"tags":[663,596,599,252,447,595,35,51,598,600,267,40,109,111,601,71,115,597,585,303],"class_list":["post-537","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general-plumbing-help","tag-aav","tag-aav-installation","tag-aav-positioning","tag-and","tag-best","tag-dishwasher-drain","tag-dishwasher","tag-disposal","tag-drain-routing","tag-drainage-system","tag-for","tag-garbage-disposal","tag-general","tag-help","tag-kitchen-plumbing","tag-layout","tag-plumbing","tag-plumbing-layout","tag-plumbing-problems","tag-plumbing-tips","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/posts\/537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/comments?post=537"}],"version-history":[{"count":1,"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/posts\/537\/revisions"}],"predecessor-version":[{"id":588,"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/posts\/537\/revisions\/588"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/media\/10"}],"wp:attachment":[{"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/media?parent=537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/categories?post=537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/plumbing101.i234.me\/wordpress\/wp-json\/wp\/v2\/tags?post=537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}