{"product_id":"heavy-duty-upvc-bolted-swing-check-valve-90-200mm-industrial-flapper-non-return-valve-high-volume-flow-control","title":"Heavy-Duty UPVC Bolted Swing Check Valve (90-200mm) | Industrial Flapper Non-Return Valve | High Volume Flow Control","description":"\u003cdiv style=\"background-color: #f8f9fa; padding: 10px; border-left: 4px solid #ff8c00; margin-bottom: 20px;\"\u003e\u003cp style=\"margin: 0;\"\u003e\u003cem\u003e🌱 Looking for smaller check valves for home aquariums or DIY projects? \u003cstrong\u003e\u003ca href=\"https:\/\/atradesen.com\/products\/premium-upvc-swing-check-valve-25-75mm-horizontal-vertical-flapper-non-return-valve-aquarium-anti-siphon\" style=\"color: #ff8c00; text-decoration: underline;\"\u003eClick here for our Standard Check Valves (25mm - 75mm)\u003c\/a\u003e\u003c\/strong\u003e.\u003c\/em\u003e\u003c\/p\u003e\u003c\/div\u003e\u003ch2\u003eIndustrial-Grade UPVC Bolted Swing Check Valve\u003c\/h2\u003e\u003cp\u003eEngineered for maximum durability and massive flow rates, our Large-Diameter UPVC Swing Check Valves from \u003cstrong\u003eAtradesen.com\u003c\/strong\u003e are the premier choice for commercial contractors, wastewater management, and massive Koi pond filtration systems. Designed to prevent back-flow in high-volume mainlines, these robust flapper valves feature a heavily bolted flange housing to withstand extreme industrial water pressure.\u003c\/p\u003e\u003ch3\u003e⚙️ Built for Tough Industrial Environments\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolted Flange Assembly:\u003c\/strong\u003e Large diameter pipes generate immense water hammer forces. This valve relies on heavy-duty stainless steel bolts to clamp the housing together, preventing blowouts and allowing for full disassembly if the internal flap ever needs servicing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical \u0026amp; Acid Resistant:\u003c\/strong\u003e Manufactured from premium UPVC. Highly resistant to corrosive liquids, industrial chemicals, saltwater, and harsh agricultural fertilizers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Volume Flow Efficiency:\u003c\/strong\u003e The swing-flap design pushes completely out of the way during operation, providing a straight-through flow path that minimizes friction and maximizes your industrial pump's GPH output.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003e🚨 CRUCIAL INSTALLATION \u0026amp; WATER PRESSURE GUIDE!\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTo ensure a 100% leak-proof seal on massive pipelines, you MUST match your installation angle to your system pressure. Read the Atradesen.com rules below:\u003c\/p\u003e\u003cul style=\"background-color: #fff3cd; padding: 15px 15px 15px 35px; border-radius: 5px; color: #856404;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e⚠️ DIRECTIONAL ARROW:\u003c\/strong\u003e You MUST install the valve so the molded arrow points in the direction of the water flow!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e🚨 HIGH WATER PRESSURE (Vertical Mount OK):\u003c\/strong\u003e If your mainline pump is exceptionally powerful, vertical installation is acceptable. The strong flow will push the massive flap open, and the heavy reverse water column will snap it shut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e🚨 LOW\/GRAVITY PRESSURE (Horizontal Mount REQUIRED):\u003c\/strong\u003e If you are using this on a low-pressure return or gravity drain, \u003cb\u003eyou MUST install this valve horizontally (flat)!\u003c\/b\u003e In a vertical setup, low pressure will struggle to lift the heavy flap, and weak backpressure will fail to seal it. Horizontal mounting allows gravity to help seal the flap perfectly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizing Logic:\u003c\/strong\u003e The sizes listed (e.g., 110mm) refer to the \u003cb\u003eInner Diameter (I.D.)\u003c\/b\u003e of the sockets, designed to sleeve \u003cb\u003eOVER\u003c\/b\u003e matching PVC pipes.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atradesen","offers":[{"title":"90mm I.D. (DN80 | Fits 90mm O.D. Pipe)","offer_id":56664330535078,"sku":null,"price":60.0,"currency_code":"USD","in_stock":true},{"title":"110mm I.D. (DN100 | Fits 110mm O.D. Pipe)","offer_id":56664330567846,"sku":null,"price":80.0,"currency_code":"USD","in_stock":true},{"title":"140mm I.D. (DN125 | Fits 140mm O.D. Pipe)","offer_id":56664330600614,"sku":null,"price":170.0,"currency_code":"USD","in_stock":true},{"title":"160mm I.D. (DN150 | Fits 160mm O.D. Pipe)","offer_id":56664330633382,"sku":null,"price":210.0,"currency_code":"USD","in_stock":true},{"title":"200mm I.D. (DN200 | Fits 200mm O.D. Pipe)","offer_id":56664330666150,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2588\/6118\/files\/Premium_UPVC_Swing_Check_Valve_25-200mm_Horizontal_Vertical_Flapper_Non-Return_Valve_Aquarium_Anti-Siphon-005.png?v=1781587226","url":"https:\/\/atradesen.com\/products\/heavy-duty-upvc-bolted-swing-check-valve-90-200mm-industrial-flapper-non-return-valve-high-volume-flow-control","provider":"Atradesen","version":"1.0","type":"link"}