{"product_id":"avanhitch-freeze-relief-drain-guard-3in-4in-fits-4-sch-40-sdr-35-dwv","title":"Avanhitch Freeze Relief Drain Guard 3in \u0026 4in – Fits 4 SCH 40 SDR 35 DWV","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMeet Avanhitch Freeze Relief, a purpose built vent designed to sit between your sump discharge and the outdoor drainage path. It is engineered to relieve discharge pressure and support overflow drainage without functioning as a check valve. The unit fits both 3 inch and 4 inch drain lines and is compatible with common pipe configurations such as 4 SCH 40, 4 SDR 35, and 4 DWV. When backpressure builds, this compact vent provides a secondary path to ease the load, which can help prevent cracks in pipes and basement flooding scenarios. If backflow does occur, inspect your sump pump check valve or drainage system for proper operation.\u003c\/p\u003e\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual size outlet covers 3 and 4 inch drains in one part, simplifying installs and stocking.\u003c\/li\u003e\n\u003cli\u003eFreeze relief safety offers an alternate vent path during buried line icing or clogs, reducing back pressure on the system.\u003c\/li\u003e\n\u003cli\u003eAbove grade installation is straightforward; no valves or seasonal switching required for setup and access.\u003c\/li\u003e\n\u003cli\u003eAll season performance supports winter freeze ups and heavy rainfall, helping minimize standing water and odors near the foundation.\u003c\/li\u003e\n\u003cli\u003eRugged housing and large downward vents resist debris and enable quick inspection for ongoing reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and usage\u003c\/h3\u003e\n\u003cp\u003eDesigned to sit between the 1-1\/2 inch sump discharge and the outdoor drain line, it can work with typical check valves and unions. Install above grade with the vents facing downward to promote proper drainage. This unit is intended to relieve discharge pressure and assist with overflow drainage; it is not a backflow preventer. If backflow occurs, check overall drainage system operation.\u003c\/p\u003e\n\u003ch3\u003eDurability and maintenance\u003c\/h3\u003e\n\u003cp\u003eBuilt to perform in cold and wet climates, the impact resistant body stays robust through freeze thaw cycles. The large downward facing vents resist debris entry and are easy to inspect or clear for long term reliability. Regular checks can help maintain steady drainage performance across seasons.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What drain sizes does the Avanhitch Freeze Relief fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It accepts both 3 and 4 inch drain lines and works with common 4 SCH 40, SDR 35, DWV configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How can this vent help in winter or heavy rainfall?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It provides a secondary path to relieve back-pressure, potentially reducing pressure on the sump discharge and limiting standing water near foundations.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Avanhitch","offers":[{"title":"Default Title","offer_id":53092807737455,"sku":"B0G4PLYD9B","price":24.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0598\/3087\/files\/avanhitch-freeze-relief-dual-size-outlet.jpg?v=1778757621","url":"https:\/\/taskholt.com\/products\/avanhitch-freeze-relief-drain-guard-3in-4in-fits-4-sch-40-sdr-35-dwv","provider":"TaskHolt","version":"1.0","type":"link"}