{"product_id":"pentair-union-nut-c-clip","title":"Pentair Union Nut C Clip","description":"\u003cp\u003eThe Pentair Union Nut C-Clip (Product #: 271091Z \/ 271091) is a factory-original OEM replacement retaining ring engineered to provide a secure mechanical lock within plumbing union assemblies on premium pool and spa filtration systems. Utilizing a specialized split-ring \"C\" design, this heavy-duty snap clip snaps firmly into an integrated perimeter groove on the exterior of standard 1.5-inch or 2-inch bulkhead adapter tailpieces, acting as a structural backstop that prevents the loose-spinning union nut from sliding off the pipe. This critical alignment interface is widely used to connect Pentair Hi-Flow™ side-mount and top-mount multiport backwash valves to Triton® II sand filters, Quad D.E.® separation tanks, and high-performance circulation pumps. Injection-molded from a premium, high-density engineering polymer, the component provides exceptional structural flexibility to bend without snapping during installation, total immunity to aggressive pool chemicals or salt-chlorine generation, and built-in UV stabilizers to prevent embrittlement from continuous outdoor weathering. By absorbing the constant hydraulic vibrations, line pressure surges, and backpressure generated by the pool system up to a maximum continuous baseline of 50 PSI, this retaining clip ensures the union assembly compresses its internal o-rings uniformly, preventing costly pressure-side water weeping or suction-side air induction. The physical dry weight of this single Pentair Union Nut C-Clip is exceptionally light at approximately \u003cb data-path-to-node=\"0\" data-index-in-node=\"1528\"\u003e0.02 pounds\u003c\/b\u003e (roughly 0.32 ounces, with a packaged shipping weight of approximately 0.05 pounds), providing pool professionals and residential managers with an indispensable, highly resilient, and featherweight hardware component for flawless water circulation networks.\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53165499154543,"sku":"39104500Z","price":7.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/51WGyzFPbgL._AC_UF894_1000_QL80.jpg?v=1779896821","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-union-nut-c-clip","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}