{"product_id":"pentairtr140airrelieftube150042pen150042","title":"Pentair TR140 Air Relief Tube | 150042","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair 150042 Air Relief Tube (Black) for Triton II TR140 \/ TR140C (After 11\/01\/1999)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair \u003cstrong\u003e150042\u003c\/strong\u003e is an OEM \u003cstrong\u003eair relief tube\u003c\/strong\u003e used on select Pentair\/PacFab Triton II sand filters.\n    This internal tube routes trapped air to the filter’s air relief\/bleed point so the tank can purge air during startup and after service.\n    Replacing a cracked, brittle, or missing air relief tube helps restore proper venting, more stable pressure readings, and smoother priming.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCommon Compatibility (Verify by Model \u0026amp; Build Date)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePentair\/PacFab Triton II\u003c\/strong\u003e sand filter: \u003cstrong\u003eTR140\u003c\/strong\u003e (manufactured after \u003cstrong\u003e11\/01\/1999\u003c\/strong\u003e)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePentair Triton Commercial\u003c\/strong\u003e sand filters: \u003cstrong\u003eTR140C\u003c\/strong\u003e (manufactured after \u003cstrong\u003e11\/01\/1999\u003c\/strong\u003e)\u003c\/li\u003e\n    \u003cli\u003eAlso commonly listed for \u003cstrong\u003eTR100\u003c\/strong\u003e and select commercial variants depending on configuration (confirm by parts diagram)\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    Important: Triton\/Triton II internals vary by production version. Match your filter model and the “after 11\/01\/1999” application note before ordering.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 150042\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Black plastic\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApprox. size:\u003c\/strong\u003e 29\" length\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTubing size:\u003c\/strong\u003e 1\/4\" ID x 3\/8\" OD\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Internal air-vent routing for the filter air relief system\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Symptoms of a Failed Air Relief Tube\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eAir won’t purge properly from the filter after cleaning or start-up\u003c\/li\u003e\n    \u003cli\u003ePersistent air in the tank (burping\/foaming at returns) after priming is confirmed\u003c\/li\u003e\n    \u003cli\u003eUnstable or inaccurate pressure readings caused by trapped air\u003c\/li\u003e\n    \u003cli\u003eVisible cracks, brittleness, kinks, or a tube that won’t stay seated\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off the pump and \u003cstrong\u003erelieve all filter pressure\u003c\/strong\u003e at the air relief before opening the tank.\u003c\/li\u003e\n    \u003cli\u003eRemove the old tube and clean any debris or scale from the air relief passages and seating points.\u003c\/li\u003e\n    \u003cli\u003eInstall the new tube in the same routing\/orientation as the original to prevent kinks and ensure proper venting.\u003c\/li\u003e\n    \u003cli\u003eReassemble, restart the system, then bleed air until a steady stream of water is present.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products (Aqua Pool Supply)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pentair%20150042\"\u003ePentair 150042 Air Relief Tube (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Triton%20II%20TR140%20parts\"\u003eTriton II TR140 Filter Parts (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=TR140C%20parts\"\u003eTriton TR140C Commercial Filter Parts (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pentair%20190059Z\"\u003ePentair Pressure Gauge 190059Z (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=filter%20air%20relief%20assembly\"\u003eFilter Air Relief Assemblies \u0026amp; Parts (Search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eAfter any filter service, bleed air slowly until water runs steady—this helps prevent pressure spikes and erratic readings.\u003c\/li\u003e\n    \u003cli\u003eIf you repeatedly trap air, inspect the pump lid O-ring, drain plugs, and suction-side unions for air leaks.\u003c\/li\u003e\n    \u003cli\u003eKeep the air relief path clean—scale and debris can restrict venting and shorten component life.\u003c\/li\u003e\n    \u003cli\u003eRecord your clean starting pressure; service the filter when pressure rises about 8–10 PSI over baseline (or per your filter label).\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52589948633404,"sku":"150042","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-tr140-air-relief-tube-150042-pool-filter-parts-7020424.jpg?v=1771957815","url":"https:\/\/aquapoolsupply.com\/products\/pentairtr140airrelieftube150042pen150042","provider":"Aqua Pool Supply","version":"1.0","type":"link"}