{"product_id":"s18-s21-breast-pump-duckbill-valve-diaphragm-replacement-set","title":"S18\/S21 Breast Pump Duckbill Valve \u0026 Diaphragm Replacement Set","description":"\n\u003ch2\u003eKeep Your Breast Pump Working Like New\u003c\/h2\u003e\n\u003cp\u003eMaintain peak pumping performance with this complete replacement accessory set, designed specifically for \u003cstrong\u003eS18 and S21 electric breast pumps\u003c\/strong\u003e. Made from food-grade silicone and PP plastic, these parts are soft, safe, and gentle — keeping your pumping routine hygienic, comfortable, and efficient every session.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThese statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Replace Your Breast Pump Parts Regularly?\u003c\/h3\u003e\n\u003cp\u003eOver time, duckbill valves and diaphragms can wear down, stretch, or develop micro-tears that reduce suction and milk flow. Replacing these small but essential components regularly helps you maintain a healthy milk supply and ensures a hygienic experience for you and your baby. The \u003ca href=\"https:\/\/www.cdc.gov\/breastfeeding\/recommendations\/handling_breastmilk.htm\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCDC recommends keeping all breast pump parts clean\u003c\/a\u003e to reduce the risk of contamination.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included in Each Kit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1x Silicone Diaphragm\u003c\/strong\u003e — Creates a secure seal for consistent suction\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1x Duckbill Valve\u003c\/strong\u003e — Controls milk flow direction for efficient expression\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1x Milk Collector\u003c\/strong\u003e — Catches every precious drop\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1x Flange\u003c\/strong\u003e — Comfortable breast shield for a proper fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🤱 \u003cstrong\u003eCompatible with S18 \u0026amp; S21 Electric Breast Pumps\u003c\/strong\u003e — direct-fit replacement parts\u003c\/li\u003e\n  \u003cli\u003e🧴 \u003cstrong\u003eSoft Silicone + PP Material\u003c\/strong\u003e — BPA-free, skin-safe, and gentle during use\u003c\/li\u003e\n  \u003cli\u003e🧼 \u003cstrong\u003eEasy to Clean\u003c\/strong\u003e — smooth surfaces resist milk residue buildup\u003c\/li\u003e\n  \u003cli\u003e💼 \u003cstrong\u003ePump Anywhere\u003c\/strong\u003e — use at home, in the office, or while traveling\u003c\/li\u003e\n  \u003cli\u003e📐 \u003cstrong\u003eCompact Size\u003c\/strong\u003e — approx. 46×40mm (valve) and 110×118mm (diaphragm)\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\u003eValve Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~46 × 40 mm (1.81 × 1.57 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiaphragm Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~110 × 118 mm (4.33 × 4.64 in)\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\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more personal care essentials? Check out our \u003ca href=\"\/products\/1-2pcs-curl-defining-mousse-anti-frizz-bouncy-cream-hair-curling-cream-mousse-hydrate-defined-curl-enhancer-hair-styling-creamy\"\u003eCurl Defining Mousse for Easy Styling\u003c\/a\u003e or browse our \u003ca href=\"\/products\/laneige-lip-sleeping-mask-intense-hydration-vitamin-c-berry-070oz\"\u003eLANEIGE Lip Sleeping Mask for Overnight Hydration\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Please allow 1–2 cm variation due to manual measurement. Slight color differences may occur due to screen resolution settings.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Are these duckbill valve replacements compatible with all S18 and S21 breast pump models?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, this replacement set is specifically designed to be compatible with S18 and S21 electric breast pump models. Please verify your pump model number before purchasing to ensure a proper fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How often should I replace my breast pump duckbill valves and diaphragm?\u003c\/h4\u003e\n\u003cp\u003eA: It is generally recommended to replace duckbill valves every 4–8 weeks with regular use, and diaphragms every 3–6 months. Signs that replacement is needed include reduced suction, visible wear, or cracks in the silicone.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these breast pump replacement parts safe for my baby?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the parts are made from food-grade silicone and PP plastic, which are BPA-free and non-toxic. They are safe for use with breast milk intended for infant feeding. Always clean and sterilize parts before first use and after each pumping session.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I clean and sterilize these silicone replacement parts?\u003c\/h4\u003e\n\u003cp\u003eA: These parts can be rinsed with warm soapy water after each use. For deeper cleaning, they are compatible with standard steam sterilizers or can be boiled briefly. Allow all components to air-dry completely before reassembly and storage.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are these duckbill valve replacements compatible with all S18 and S21 breast pump models?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, this replacement set is specifically designed to be compatible with S18 and S21 electric breast pump models. Please verify your pump model number before purchasing to ensure a proper fit.\"}}, {\"@type\": \"Question\", \"name\": \"How often should I replace my breast pump duckbill valves and diaphragm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is generally recommended to replace duckbill valves every 4–8 weeks with regular use, and diaphragms every 3–6 months. Signs that replacement is needed include reduced suction, visible wear, or cracks in the silicone.\"}}, {\"@type\": \"Question\", \"name\": \"Are these breast pump replacement parts safe for my baby?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the parts are made from food-grade silicone and PP plastic, which are BPA-free and non-toxic. They are safe for use with breast milk intended for infant feeding. Always clean and sterilize parts before first use and after each pumping session.\"}}, {\"@type\": \"Question\", \"name\": \"How do I clean and sterilize these silicone replacement parts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These parts can be rinsed with warm soapy water after each use. For deeper cleaning, they are compatible with standard steam sterilizers or can be boiled briefly. Allow all components to air-dry completely before reassembly and storage.\"}}]}\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\": \"S18\/S21 Breast Pump Duckbill Valve \u0026 Diaphragm Replacement Set\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/products\/s18-s21-breast-pump-duckbill-valve-diaphragm-replacement-set\"}]}\u003c\/script\u003e","brand":"Peaceful Pleasures Health and Wellness","offers":[{"title":"China Mainland","offer_id":53637068915001,"sku":"1005009872363106-China Mainland","price":15.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/3689\/5801\/files\/Sffd16ef8ab6245baa3db60e40de0ca7fN.webp?v=1782516155","url":"https:\/\/peacefulpleasureswellness.com\/products\/s18-s21-breast-pump-duckbill-valve-diaphragm-replacement-set","provider":"Peaceful Pleasures Health and Wellness","version":"1.0","type":"link"}