{"product_id":"8-1-2-buttress-thread-top-closure","title":"Pentair Genuine OEM 8-1\/2\" Buttress Thread Top Closure","description":"\u003cp\u003eThe Pentair 154575Z is the 8-1\/2 inch buttress thread top closure for Triton side mount sand filters. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it is\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe closure is the large threaded lid at the top of the tank, the one that comes off when you need to reach the sand or the internal piping. The buttress thread form carries the pressure load on one side of the thread while staying easy enough to turn by hand, which is what makes a lid of this diameter practical.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck the size and the model\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source material lists this closure two ways: specifically for the Triton C commercial filters TR100C and TR140C, and more broadly with the Triton II and Triton C-3 side mount parts. We have kept both readings rather than choosing one. Measure the threaded opening on your tank and confirm it is 8-1\/2 inches.\u003c\/p\u003e\u003cp\u003eThe square closure o-ring is a separate part. A closure only holds because that o-ring is soft and unmarked, so plan on fitting a new one at the same time.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626117804244,"sku":"PAC-051-9314","price":71.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_15d27a48-76a5-4b75-9d9f-48992b185531.jpg?v=1788705053","url":"https:\/\/www.activepoolsupply.com\/products\/8-1-2-buttress-thread-top-closure","provider":"Active Pool Supply","version":"1.0","type":"link"}