{"product_id":"internal-locknut","title":"Pentair Genuine OEM 2\" Internal Bulkhead Locknut","description":"\u003cp\u003eThe Pentair 154412 is the internal bulkhead locknut in 2 inch. It is the plastic nut on the inside of the filter tank that clamps the bulkhead fitting in place, and it is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it is used\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair lists it for the Nautilus and Nautilus Plus DE filters, the SM and SMBW 4000 Series filters, FNS filters and the Triton II. It is a shared part across a wide run of tanks, which is why it turns up so often on a service call.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you rebuild the bulkhead\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe locknut works with a bulkhead gasket and an external spacer, both separate parts. If the bulkhead has been leaking, replace the gasket at the same time rather than reusing a flattened one. A bulkhead wrench is worth having for a tank that has not been opened in years.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625842159828,"sku":"PAC-051-2812","price":15.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_9a68f381-cd32-48c0-a96d-eff88726f439.png?v=1788701361","url":"https:\/\/www.activepoolsupply.com\/products\/internal-locknut","provider":"Active Pool Supply","version":"1.0","type":"link"}