{"product_id":"campbell-1-1-4-in-d-x-1-1-4-in-d-mip-plastic-spring-loaded-check-valve","title":"Campbell 1-1\/4 in. D X 1-1\/4 in. D MIP Plastic Spring Loaded Check Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Campbell 1-1\/4 in. D X 1-1\/4 in. D MIP Plastic Spring Loaded Check Valve is a compact, lead-free inline valve designed to protect your piping system from reverse flow. Built from durable plastic and engineered for 1-1\/4\" lines, this valve combines reliable backflow prevention with lightweight installation flexibility for residential and light commercial projects.\u003c\/p\u003e \u003ch3\u003eWhy this spring-loaded check valve stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eLead-free, plastic construction\u003c\/strong\u003e delivers corrosion resistance and compatibility with potable water lines, reducing maintenance and extending service life in challenging environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1-1\/4\" MIP connections\u003c\/strong\u003e provide a simple, seal-tight fit for standard pipe fittings, enabling straightforward retrofits or new installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpring-loaded mechanism\u003c\/strong\u003e ensures quick response to backflow, closing rapidly when forward flow drops to protect downstream equipment and prevent contamination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePressure-driven activation\u003c\/strong\u003e means the valve opens with forward pressure and reliably seats under reverse or low-flow conditions, maintaining system integrity at all times.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum pressure 175 psi\u003c\/strong\u003e and \u003cstrong\u003emaximum temperature 140°F\u003c\/strong\u003e make it suitable for a wide range of water supply and irrigation scenarios without sacrificing performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVertical mounting support\u003c\/strong\u003e offers installation flexibility in compact layouts, especially where space is limited or specific orientation is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eThis valve is well-suited for protecting pumps, water softeners, filtration systems, irrigation setups, and other inline applications connected to 1-1\/4\" piping. Its corrosion-resistant plastic construction is particularly advantageous in potable water lines, where metal valves might introduce galvanic concerns or require extra maintenance. Use it to prevent backflow in:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePump discharge lines and staging tanks\u003c\/li\u003e \u003cli\u003eResidential irrigation manifolds and lawn systems\u003c\/li\u003e \u003cli\u003eUnder-sink or utility room water lines\u003c\/li\u003e \u003cli\u003eFiltration and treatment assemblies where backflow protection is essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and practical tips\u003c\/h3\u003e\n\u003cp\u003eMount the valve in a vertical orientation as recommended, ensuring the flow direction aligns with the forward (opened) position. Use appropriate MIP fittings and sealants rated for plastic components to ensure a watertight connection. Since it’s lead-free, it’s compatible with potable water systems, but always inspect for debris before installation to prevent spring or seat interference. Periodic checks for leaks or unusual noise will help maintain optimal performance over time.\u003c\/p\u003e \u003ch3\u003eWhat this means for you\u003c\/h3\u003e\n\u003cp\u003eChoosing the Campbell 1-1\/4 in. D X 1-1\/4 in. D MIP Plastic Spring Loaded Check Valve gives you a reliable, easy-to-install backflow prevention solution that aligns with modern plumbing standards. Its combination of lead-free plastic construction, standard 1-1\/4\" MIP connections, and a responsive spring-loaded design delivers dependable protection against back-siphonage and contamination, while staying approachable on price and installation effort. If you’re upgrading a system or adding protective flow control to a new build, this valve offers a practical, durable option that meets typical residential and light commercial demands.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Campbell","offers":[{"title":"Default Title","offer_id":52171841011986,"sku":"48605","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/48605_A.eps_High.jpg?v=1775503139","url":"https:\/\/nationalhardwaregroup.com\/products\/campbell-1-1-4-in-d-x-1-1-4-in-d-mip-plastic-spring-loaded-check-valve","provider":"National Hardware Group","version":"1.0","type":"link"}