{"product_id":"pom-plastic-insert-check-valve-core-spring-loaded-one-way-non-return-cartridge-with-epdm-o-ring-8mm-50mm-atradesen","title":"POM Plastic Insert Check Valve Core | Spring-Loaded One-Way Non-Return Cartridge with EPDM O-Ring (8mm - 50mm) - Atradesen","description":"\u003ch2\u003ePOM Plastic Spring-Loaded Insert Check Valve Cores (One-Way Non-Return Cartridges)\u003c\/h2\u003e\n\u003cp\u003e\n  Configure compact, inline backflow prevention inside your piping runs with our premium POM plastic insert check valve cores, available at \u003ca href=\"https:\/\/atradesen.com\" target=\"_blank\"\u003eAtradesen.com\u003c\/a\u003e. Crafted from high-density POM (Polyoxymethylene\/Acetal), these cartridge valves are fitted with heavy-duty 304 stainless steel springs and high-grade EPDM gaskets, providing excellent dimensional stability, thermal endurance, and leak-proof seals up to 110°C.\n\u003c\/p\u003e\n\u003cp\u003e\n  Designed to be pressed directly into matching hoses or rigid piping, this space-saving non-return core instantly stops liquid siphoning and reverse flow, protecting pump impellers and maintaining inline fluid pressure.\n\u003c\/p\u003e\n\n\u003ch3\u003eTwo Configured Flow Styles\u003c\/h3\u003e\n\u003cp\u003e\n  Select the optimal internal structure to match your pipeline's fluid dynamics and volume needs:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard Flow (Compact Profile):\u003c\/strong\u003e Features a compact cylinder structure (available in 8mm, 10mm, 13mm, 14mm, 15mm, 20mm, and 26mm outer diameters). Ideal for smaller tubing networks, RO purifiers, and home appliance water supply connections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Flow (Enhanced Fins Design):\u003c\/strong\u003e Features specialized built-in guide fins at the base to stabilize the valve gate and maximize fluid passage under heavy volume (available in 15mm, 20mm, 25mm, 32mm, 40mm, and 50mm outer diameters). Perfect for agricultural irrigation mainlines, booster pumps, and industrial drainage systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e⚠️ Size Selection \u0026amp; Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003e\n  \u003cstrong\u003eReview these alignment guidelines prior to installation to ensure a leakage-free fit:\u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatching Pipe Inner Diameter (ID):\u003c\/strong\u003e The specified size (8mm to 50mm) represents the \u003cstrong\u003eouter diameter (OD) of the check valve cartridge\u003c\/strong\u003e. You must select a cartridge size that matches the \u003cstrong\u003eINNER diameter (ID)\u003c\/strong\u003e of your pipe or flexible hose (e.g., if your soft vinyl tube has an ID of 15mm, select a 15mm check valve core).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Flow Direction:\u003c\/strong\u003e Standard one-way operation. Water must flow from the flat\/gasket end to push open the spring-loaded gate. Reverse flow will immediately compress the gate shut, blocking the return path.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmooth Insertion:\u003c\/strong\u003e Applying a thin film of clean water or food-safe silicone lubricant to the EPDM O-ring will make sliding the cartridge into the pipe interior significantly smoother and prevent O-ring pinching.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f2f2f2; text-align: left;\"\u003e\n      \u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n      \u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eBody Material\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHigh-Grade POM (Acetal\/Polyoxymethylene) - Non-Toxic\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eSpring Material\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e304 Stainless Steel (Anti-Rust \u0026amp; Durable)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eO-Ring Gasket Material\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eEPDM (Ethylene Propylene Diene Monomer)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eMax Working Temperature\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eUp to 110°C (230°F) - Safe for hot water loops\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eWorking Pressure Range\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e0.05 ~ 1.0 MPa (0.5 ~ 10 Bar)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eCracking (Opening) Pressure\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e0.005 MPa (0.05 Bar)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the guiding fins on the High Flow models?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The guide fins hold the inner spring gate in a perfectly concentric position when pushed open by fluid pressure. This prevents turbulent water spin, decreases flow resistance, and allows a higher volume of water to pass through with minimal pressure loss.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the EPDM O-ring securely seal against the pipe inner wall without glue?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The rubber O-ring is designed with a slightly larger diameter than the POM casing. When pressed into a matching rigid pipe or hose, the rubber compresses tightly against the inner wall, forming a strong mechanical friction seal that prevents water from bypassing the cartridge.\u003c\/p\u003e\n\n\u003c!-- Recommended System Bundles \u0026 Cross-Linking --\u003e\n\u003cdiv style=\"background-color: #fcfcfc; border: 1px solid #e5e5e5; padding: 15px; border-radius: 6px; margin-top: 30px;\"\u003e\n  \u003cp style=\"margin: 0 0 10px 0; font-size: 15px; font-weight: bold; color: #333;\"\u003eRecommended System Bundles \u0026amp; Companion Products:\u003c\/p\u003e\n  \u003cul style=\"margin: 0; padding-left: 20px; font-size: 14px; color: #555;\"\u003e\n    \u003cli style=\"margin-bottom: 8px;\"\u003e\n      \u003cstrong\u003eFor Suction Pipe Filtration:\u003c\/strong\u003e Keep pump intake lines protected from drawing in large solid debris using our weighted \n      \u003ca href=\"https:\/\/atradesen.com\/collections\/filter-material\/products\/anti-clogging-filter-suction-head-pom-weighted-intake-strainer-for-pumps-siphons-1-4-3-8-qc-g1-2-thread-6mm-10mm-barb-atradesen\" style=\"text-decoration: underline; font-weight: bold; color: #0056b3;\"\u003eAnti-Clogging Filter Suction Heads\u003c\/a\u003e.\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 8px;\"\u003e\n      \u003cstrong\u003eFor Gravity Tank Discharging:\u003c\/strong\u003e Draw clean water directly from your storage buckets using our food-safe \n      \u003ca href=\"https:\/\/atradesen.com\/collections\/misc-adapters-transition-fittings\/products\/water-tank-plastic-faucet-pp-food-grade-valveless-dispenser-tap-for-buckets-storage-tanks-atradesen\" style=\"text-decoration: underline; font-weight: bold; color: #0056b3;\"\u003eWater Tank Food-Grade PP Faucets\u003c\/a\u003e.\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 8px;\"\u003e\n      \u003cstrong\u003eFor Solid Pipe Threading:\u003c\/strong\u003e To branch out or connect rigid lines to G1\/2\" male threaded adaptors, use our matching \n      \u003ca href=\"https:\/\/atradesen.com\/collections\/misc-adapters-transition-fittings\/products\/ppr-female-threaded-three-way-tee-double-sided-three-sided-female-thread-equal-reducing-tee-joint-1-2-3-4-1-atradesen\" style=\"text-decoration: underline; font-weight: bold; color: #0056b3;\"\u003ePPR Female-Threaded Three-Way Tees\u003c\/a\u003e.\n    \u003c\/li\u003e\n      \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Atradesen","offers":[{"title":"Standard Flow 8mm","offer_id":56349944807590,"sku":null,"price":0.68,"currency_code":"USD","in_stock":true},{"title":"Standard Flow 10mm","offer_id":56349944840358,"sku":null,"price":0.88,"currency_code":"USD","in_stock":true},{"title":"Standard Flow 12mm","offer_id":56767288115366,"sku":null,"price":0.98,"currency_code":"USD","in_stock":true},{"title":"Standard Flow 13mm","offer_id":56767288148134,"sku":null,"price":1.12,"currency_code":"USD","in_stock":true},{"title":"Standard Flow 14mm","offer_id":56767288180902,"sku":null,"price":1.21,"currency_code":"USD","in_stock":true},{"title":"Standard Flow 15mm","offer_id":56767288213670,"sku":null,"price":1.37,"currency_code":"USD","in_stock":true},{"title":"Standard Flow 16mm","offer_id":56767288246438,"sku":null,"price":1.48,"currency_code":"USD","in_stock":true},{"title":"Standard Flow 20mm","offer_id":56767288279206,"sku":null,"price":1.65,"currency_code":"USD","in_stock":true},{"title":"High Flow 15mm","offer_id":56767288311974,"sku":null,"price":1.85,"currency_code":"USD","in_stock":true},{"title":"High Flow 20mm","offer_id":56767288344742,"sku":null,"price":1.97,"currency_code":"USD","in_stock":true},{"title":"High Flow 25mm","offer_id":56767288377510,"sku":null,"price":2.32,"currency_code":"USD","in_stock":true},{"title":"High Flow 32mm","offer_id":56767288410278,"sku":null,"price":3.21,"currency_code":"USD","in_stock":true},{"title":"High Flow 40mm","offer_id":56767288443046,"sku":null,"price":3.89,"currency_code":"USD","in_stock":true},{"title":"High Flow 50mm","offer_id":56767288475814,"sku":null,"price":4.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2588\/6118\/files\/POM_Plastic_Insert_Check_Valve_Core_Spring-Loaded_One-Way_Non-Return_Cartridge_with_EPDM_O-Ring_8mm_-_50mm_-_Atradesen-001.png?v=1783664347","url":"https:\/\/atradesen.com\/products\/pom-plastic-insert-check-valve-core-spring-loaded-one-way-non-return-cartridge-with-epdm-o-ring-8mm-50mm-atradesen","provider":"Atradesen","version":"1.0","type":"link"}