{"product_id":"silicone-duckbill-valve-membrane-replacement-s18-s21-breast-pump","title":"Silicone Duckbill Valve \u0026 Membrane Kit for S18\/S21 Breast Pump","description":"\n\u003ch2\u003eKeep Your Breast Pump Working Like New\u003c\/h2\u003e\n\u003cp\u003eWorn-out valves and membranes can reduce suction and make pumping less efficient — and for breastfeeding moms, every drop counts. These soft silicone replacement parts are designed specifically for \u003cstrong\u003eS18 and S21 electric breast pumps\u003c\/strong\u003e, giving you a complete repair kit so you can get back to comfortable, effective milk expression quickly.\u003c\/p\u003e\n\n\u003cp\u003eMade from body-safe \u003cstrong\u003esilicone + PP (polypropylene)\u003c\/strong\u003e, these parts are free from high-concern chemicals, easy to clean, and built to maintain a strong, consistent seal for optimal milk flow. Whether you're pumping at home, at the office, or on the go, these replacement parts help you maintain your milk supply without missing a beat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFDA Disclaimer:\u003c\/strong\u003e This product is a breast pump accessory and is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider with any questions regarding breastfeeding or lactation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included in the Kit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1× Silicone Diaphragm\u003c\/strong\u003e — maintains suction integrity\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1× Duckbill Valve\u003c\/strong\u003e — ensures smooth, one-way milk flow\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1× Milk Collector\u003c\/strong\u003e — captures every precious drop\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1× Flange\u003c\/strong\u003e — comfortable, secure fit during pumping sessions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🍼 \u003cstrong\u003eCompatible with S18 \u0026amp; S21 Electric Breast Pumps\u003c\/strong\u003e — precision-fit replacement parts\u003c\/li\u003e\n  \u003cli\u003e🌿 \u003cstrong\u003eSoft, Body-Safe Silicone\u003c\/strong\u003e — gentle on skin, flexible and comfortable\u003c\/li\u003e\n  \u003cli\u003e🧼 \u003cstrong\u003eEasy to Clean\u003c\/strong\u003e — hygienic design for worry-free pumping\u003c\/li\u003e\n  \u003cli\u003e💨 \u003cstrong\u003eRestores Suction Power\u003c\/strong\u003e — worn valves are a leading cause of reduced pump efficiency\u003c\/li\u003e\n  \u003cli\u003e🏠 \u003cstrong\u003ePump Anywhere\u003c\/strong\u003e — home, office, or travel-ready\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eComplete Repair Kit\u003c\/strong\u003e — everything you need in one package\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSilicone + PP\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize (Diaphragm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 46 × 40 mm \/ 1.81 × 1.57 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize (Flange)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 11 × 11.8 cm \/ 4.33 × 4.64 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eS18 \/ S21 Electric Breast Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHigh-Concern Chemicals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Please allow 1–2 cm variance due to manual measurement. Slight color differences may occur due to screen resolution.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eExpert Breastfeeding Resources\u003c\/h3\u003e\n\u003cp\u003eFor tips on breastfeeding and pumping, visit the CDC Breastfeeding Resource Center — a trusted guide for nursing mothers.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/miniature-bath-towel-model-1-12-dollhouse-accessory\"\u003e1\/12 Dollhouse Miniature Bath Towel Model – Fabric Accessory\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-3l-air-humidifier-professional-large-capacity-humidifier-for-home-double-spray-port-cool-mist-maker-humidifier-with-led-light\"\u003e1.3L Cool Mist Humidifier with LED Night Light \u0026amp; Dual Spray\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Are these silicone duckbill valves compatible with all breast pump models?\u003c\/h4\u003e\n\u003cp\u003eA: These replacement parts are specifically designed for \u003cstrong\u003eS18 and S21 electric breast pumps\u003c\/strong\u003e. Please verify your pump model before purchasing to ensure a proper fit and seal.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How often should I replace breast pump valves and membranes?\u003c\/h4\u003e\n\u003cp\u003eA: Most lactation consultants recommend replacing duckbill valves and silicone membranes every \u003cstrong\u003e4–8 weeks\u003c\/strong\u003e with regular use, or sooner if you notice reduced suction, cracks, or milk residue that won't clean off. Fresh parts help maintain optimal milk expression efficiency.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these parts safe and free from harmful chemicals?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. These replacement parts are made from body-safe silicone and PP (polypropylene) with \u003cstrong\u003eno high-concern chemicals\u003c\/strong\u003e, making them suitable for use in breast milk expression for infants.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I clean these silicone replacement parts?\u003c\/h4\u003e\n\u003cp\u003eA: These parts can be rinsed with warm soapy water after each use. They are designed for easy cleaning to maintain a hygienic pumping experience. Always allow parts to air dry completely before reassembling your pump.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are these silicone duckbill valves compatible with all breast pump models?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These replacement parts are specifically designed for S18 and S21 electric breast pumps. Please verify your pump model before purchasing to ensure a proper fit and seal.\"}}, {\"@type\": \"Question\", \"name\": \"How often should I replace breast pump valves and membranes?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Most lactation consultants recommend replacing duckbill valves and silicone membranes every 4–8 weeks with regular use, or sooner if you notice reduced suction, cracks, or milk residue that won't clean off. Fresh parts help maintain optimal milk expression efficiency.\"}}, {\"@type\": \"Question\", \"name\": \"Are these parts safe and free from harmful chemicals?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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Always allow parts to air dry completely before reassembling your pump.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Personal Care \u0026 Devices\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/collections\/personal-care-devices\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Silicone Duckbill Valve \u0026 Membrane Kit for S18\/S21 Breast Pump\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/products\/silicone-duckbill-valve-membrane-replacement-s18-s21-breast-pump\"}]}\u003c\/script\u003e","brand":"Peaceful Pleasures Health and Wellness","offers":[{"title":"China Mainland","offer_id":53637217943865,"sku":"1005009150666200-China Mainland","price":12.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/3689\/5801\/files\/S266968a5a4d84b638607d05e5efb2fdbn.webp?v=1782517885","url":"https:\/\/peacefulpleasureswellness.com\/products\/silicone-duckbill-valve-membrane-replacement-s18-s21-breast-pump","provider":"Peaceful Pleasures Health and Wellness","version":"1.0","type":"link"}