{"product_id":"waterway-400-5090-2-s-x-2-s-self-aligning-union-assembly","title":"Waterway Self-Aligning Union Assembly – 1-1\/2\" \u0026 2\" Slip × Slip","description":"\u003cp\u003eA \u003cstrong\u003eWaterway self-aligning union assembly\u003c\/strong\u003e in white PVC — slip socket on both sides, complete with tailpieces, union nut and O-ring. The self-aligning seat is the point: it seals even when two glued pipe runs don't meet in perfect line, which after a real-world install they rarely do.\u003c\/p\u003e\n\u003ch3\u003eWhy unions everywhere\u003c\/h3\u003e\n\u003cp\u003eAny component you might ever remove — pump, UV, filter, check valve — should have a union on each side. That turns future service into a hand-loosened nut instead of a hacksaw and a repair coupling. The O-ring face seal needs \u003cstrong\u003eno thread tape or paste\u003c\/strong\u003e and comes apart and back together indefinitely.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-1\/2\" slip × slip\u003c\/strong\u003e — part 400-3090\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" slip × slip\u003c\/strong\u003e — part 400-5090\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitting notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSized for Sch 40 PVC. Glue as normal; the union itself stays hand-serviceable.\u003c\/li\u003e\n\u003cli\u003eHand-tight on the nut is correct — the O-ring does the sealing, and a wrench only distorts the seat.\u003c\/li\u003e\n\u003cli\u003eThreading a pump instead? See our \u003ca href=\"\/products\/hi-temp-unions-2-mip-x-2-pvc-pool-pump-union\"\u003e2\" MIP × slip pump union\u003c\/a\u003e for the threaded side, and the \u003ca href=\"\/collections\/plumbing\"\u003eplumbing collection\u003c\/a\u003e for valves and pipe.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy buy from ChampKoi?\u003c\/h3\u003e\n\u003cp\u003eChampKoi has kept koi pond plumbing tight from our San Jose, California facility since 1998. The rule we give every customer: a valve and a union on both sides of anything you'll ever touch again.\u003c\/p\u003e","brand":"Waterway","offers":[{"title":"1-1\/2\"","offer_id":52789031567672,"sku":"400-3090","price":16.99,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":52776963965240,"sku":"400-5090","price":19.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6132\/2296\/files\/WWP-56-4503_medium_96f134be-1d2f-4b64-ab12-edfb29af6679.jpg?v=1786304642","url":"https:\/\/www.champkoi.com\/products\/waterway-400-5090-2-s-x-2-s-self-aligning-union-assembly","provider":"Champion Nishikigoi","version":"1.0","type":"link"}