{"product_id":"breast-pump-accessories-flange-milk-collector-duckbill-valves-s18-s21","title":"Breast Pump Accessories – Flange \u0026 Duckbill Valves for S18\/S21","description":"\n\u003ch2\u003eReplacement Breast Pump Accessories for S18 \u0026amp; S21 Wearable Electric Pumps\u003c\/h2\u003e\n\u003cp\u003eKeep your pumping routine running smoothly with these high-quality replacement accessories designed specifically for \u003cstrong\u003eS18 and S21 wearable electric breast pumps\u003c\/strong\u003e. Whether you need a new flange, milk collector, silicone diaphragm, or duckbill valves, this set has everything you need to maintain optimal suction and hygiene — so you can focus on what matters most: nourishing your baby.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThese accessories are personal care \/ maternal health products. This product is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Nursing Moms Love These Accessories\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBPA-Free \u0026amp; Body-Safe Materials:\u003c\/strong\u003e Made from food-grade PP and soft silicone — safe for you and your baby.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesigned for S18 \u0026amp; S21 Pumps:\u003c\/strong\u003e Engineered to fit perfectly and restore full suction performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Options Available:\u003c\/strong\u003e Choose from 24mm Flange, 27mm Flange, Milk Collector, 24mm Set, or 27mm Set to match your exact needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Long-Lasting:\u003c\/strong\u003e High-quality PP + silicone construction ensures these accessories stand up to repeated use and sterilization.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Assemble:\u003c\/strong\u003e Snap-on design makes setup and cleanup quick and hassle-free.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiscreet \u0026amp; Convenient:\u003c\/strong\u003e Compatible with wearable pumps so you can express milk at work, while traveling, or on the go.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e PP + Silicone (BPA-Free)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Types:\u003c\/strong\u003e 24mm Flange | 27mm Flange | Milk Collector | 24mm Set | 27mm Set\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicone Diaphragm Size:\u003c\/strong\u003e Approx. 46 × 40 mm (1.81 × 1.57 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuckbill Valve Size:\u003c\/strong\u003e Approx. 11 × 26 mm (0.43 × 1.02 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e S18 \u0026amp; S21 Wearable Electric Breast Pumps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Package\u003c\/h3\u003e\n\u003cp\u003eDepending on your selected option, your package will include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Flange (24mm or 27mm), \u003cstrong\u003eOR\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003e1× Milk Collector, \u003cstrong\u003eOR\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003e1× Milk Collector with Silicone Diaphragm \u0026amp; Duckbill Valves\u003c\/li\u003e\n\u003c\/ul\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 variations.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eExpert Breastfeeding Resources\u003c\/h3\u003e\n\u003cp\u003eMaintaining proper pump equipment is essential for effective milk expression. Learn more about breastfeeding best practices and equipment hygiene from the \u003ca href=\"https:\/\/www.cdc.gov\/breastfeeding\/recommendations\/handling_breastmilk.htm\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCDC's Breastfeeding Guidelines\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\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 — great for keeping the nursery comfortable\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/laneige-lip-sleeping-mask-intense-hydration-vitamin-c-berry-070oz\"\u003eLaneige Lip Sleeping Mask – Intense Hydration with Vitamin C\u003c\/a\u003e — self-care essentials for new moms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Are these breast pump accessories BPA-free and safe for my baby?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! These accessories are made from food-grade PP and silicone materials that are completely BPA-free. They are designed to be body-safe and suitable for repeated use and sterilization, giving you peace of mind while expressing milk for your baby.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which breast pump models are compatible with these accessories?\u003c\/h4\u003e\n\u003cp\u003eA: These replacement parts are specifically designed for the \u003cstrong\u003eS18 and S21 wearable electric breast pumps\u003c\/strong\u003e. Please verify your pump model before purchasing to ensure a proper fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I know which flange size to choose — 24mm or 27mm?\u003c\/h4\u003e\n\u003cp\u003eA: The correct flange size depends on your nipple diameter. Most lactation consultants recommend measuring your nipple (not the areola) and selecting a flange that is approximately 3–4mm larger. If you are unsure, consult a lactation specialist for personalized advice.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How often should I replace the duckbill valves and silicone diaphragm?\u003c\/h4\u003e\n\u003cp\u003eA: It is generally recommended to replace duckbill valves every 4–8 weeks or if you notice a decrease in suction, cracking, or discoloration. The silicone diaphragm should also be inspected regularly and replaced if worn. Having spare parts on hand ensures consistent pumping performance.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are these breast pump accessories BPA-free and safe for my baby?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! These accessories are made from food-grade PP and silicone materials that are completely BPA-free. They are designed to be body-safe and suitable for repeated use and sterilization, giving you peace of mind while expressing milk for your baby.\"}}, {\"@type\": \"Question\", \"name\": \"Which breast pump models are compatible with these accessories?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These replacement parts are specifically designed for the S18 and S21 wearable electric breast pumps. Please verify your pump model before purchasing to ensure a proper fit.\"}}, {\"@type\": \"Question\", \"name\": \"How do I know which flange size to choose — 24mm or 27mm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The correct flange size depends on your nipple diameter. Most lactation consultants recommend measuring your nipple (not the areola) and selecting a flange that is approximately 3–4mm larger. If you are unsure, consult a lactation specialist for personalized advice.\"}}, {\"@type\": \"Question\", \"name\": \"How often should I replace the duckbill valves and silicone diaphragm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is generally recommended to replace duckbill valves every 4–8 weeks or if you notice a decrease in suction, cracking, or discoloration. The silicone diaphragm should also be inspected regularly and replaced if worn. Having spare parts on hand ensures consistent pumping performance.\"}}]}\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\": \"Breast Pump Accessories – Flange \u0026 Duckbill Valves for S18\/S21\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/products\/breast-pump-accessories-flange-milk-collector-duckbill-valves-s18-s21\"}]}\u003c\/script\u003e","brand":"Peaceful Pleasures Health and Wellness","offers":[{"title":"Sets 24mm \/ CN","offer_id":53636898029881,"sku":"1005011525032935-Sets 24mm-CN","price":114.08,"currency_code":"USD","in_stock":true},{"title":"Sets 27mm \/ CN","offer_id":53636898062649,"sku":"1005011525032935-Sets 27mm-CN","price":114.08,"currency_code":"USD","in_stock":true},{"title":"Milk collector \/ CN","offer_id":53636898095417,"sku":"1005011525032935-Milk collector-CN","price":114.08,"currency_code":"USD","in_stock":true},{"title":"24mm flange \/ CN","offer_id":53636898128185,"sku":"1005011525032935-24mm flange-CN","price":114.08,"currency_code":"USD","in_stock":true},{"title":"27mm flange \/ CN","offer_id":53636898160953,"sku":"1005011525032935-27mm flange-CN","price":114.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/3689\/5801\/files\/S93b38c9677074a4eb7d42a65d4846363m.webp?v=1782515139","url":"https:\/\/peacefulpleasureswellness.com\/products\/breast-pump-accessories-flange-milk-collector-duckbill-valves-s18-s21","provider":"Peaceful Pleasures Health and Wellness","version":"1.0","type":"link"}