{"product_id":"nds-475-4in-abs-backwater-valve","title":"NDS 475 4 in. ABS Backwater Valve with Quick Flapper Seal","description":"\u003cp\u003eThe NDS 475 4 in. ABS Backwater Valve prevents sewer and drain backflow into basements and other low-lying areas. Designed for horizontal installation, it uses a quick-action flapper and elastomeric gasket to allow one-way flow while maintaining a watertight seal.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable ABS construction resists chemicals and corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Elastomeric flapper gasket and neoprene access-cap gasket provide a reliable watertight seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Connects to 4 in. DWV pipe; hubs adapt to 2\", 3\", 4\" or 6\" systems with NDS adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess \u0026amp; Maintenance:\u003c\/strong\u003e Threaded hand-tight access cap and removable flapper simplify inspection and service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Lightweight and economical; riser with cover can be cut to length. Arrows on the hub indicate flow direction.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAs a cost-effective alternative to cast iron, the NDS 475 offers long-lasting protection and easy serviceability. Use appropriate solvent-cement fittings and inspect the valve periodically to ensure unobstructed operation.\u003c\/p\u003e","brand":"NDS","offers":[{"title":"Default Title","offer_id":43672165129,"sku":"475","price":112.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1987\/5531\/products\/475-2_df9b0c9d-73b9-4c41-a4e4-d980bdb8d703.jpg?v=1503296083","url":"https:\/\/www.sprinklersupplystore.com\/products\/nds-475-4in-abs-backwater-valve","provider":"Sprinkler Supply Store","version":"1.0","type":"link"}