{"product_id":"air-relief-tube-tr100-before-11-99","title":"Pentair Genuine OEM Air Relief Tube TR100 (before 11\/99), 154437","description":"\u003cp\u003eThe Pentair 154437 is the plastic air relief tube for the TR100 sand filter, in the version specified for units built before 11\/99. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe tube runs up inside the filter to the air relief valve. Air that collects at the top of the tank has to reach the valve to be bled off, and this is the path it takes. When the tube cracks or breaks away, the filter will not bleed properly and air stays trapped where it does no good.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGetting the right one\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe date matters here. Pentair specifies a different tube for TR100 filters built before November 1999, and this listing is that earlier version. The record also files this part under the Triton II group covering the TR40 through TR140, the Triton C-3 group and the commercial TR100C and TR140C group, so the safest approach is to order against the part number and the build date on your filter label rather than the model family alone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you open the filter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eShut the pump off and release all pressure at the relief valve before you take anything apart. A filter under pressure is not something to open.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634600259796,"sku":"PAC-051-2818","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_91fe991f-fa70-49da-81ed-238c26daabb9.png?v=1788835299","url":"https:\/\/www.activepoolsupply.com\/products\/air-relief-tube-tr100-before-11-99","provider":"Active Pool Supply","version":"1.0","type":"link"}