{"product_id":"two-full-milk-collector-cup-sets-with-21mm-flange-compatible","title":"Two Full Milk Collector Cup Sets with 21mm Flange Compatible","description":"\u003cp\u003eIn this review the focus is on a practical replacement kit for owners of Momcozy S12 Pro and S9 Pro wearable pumps. The set includes two full collector assemblies and the key soft silicone components that affect comfort and leak prevention, so the single biggest reason to buy is to restore or duplicate the pump parts you use most often without paying for an original brand set. It is a functional, budget replacement that aims to match the pump geometry and provide a soft-touch seal during pumping sessions.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete two-set kit:\u003c\/strong\u003e Each package contains two 21mm flanges, two milk collector cups and matching duckbill valves, diaphragms and linkers so you can replace both sides at once.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel-specific fit:\u003c\/strong\u003e Designed to be compatible only with Momcozy S12 Pro and S9 Pro pumps, which helps ensure the parts align and seal correctly for those specific models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed system design:\u003c\/strong\u003e Dual channel anti-backflow construction separates gas and milk to reduce contamination risk and prevent milk from reaching the motor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak-prevention elements:\u003c\/strong\u003e The silicone diaphragm and one-way duckbill valve direct milk flow and aim to reduce leaks when assembled and seated properly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe material and cleaning guidance:\u003c\/strong\u003e Made from food-grade BPA-free silicone that is soft and odorless, and safe to sanitize with boiling water or steam for 5-10 minutes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is best for parents who already own a Momcozy S12 Pro or S9 Pro wearable pump and need an affordable replacement set of flanges, collectors and valves. It is useful for anyone who prefers to keep a spare full set on hand for travel or to swap between washing cycles.\u003c\/p\u003e\n\n\u003cp\u003eIt is not suitable for owners of other Momcozy models such as S12 or S9, or other brands, so buyers who are unsure of their pump model should check compatibility before purchasing. Those needing OEM-certified parts for warranty or long-term durability may prefer original manufacturer replacements.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete replacement of both sides in one package saves time and ensures matched parts.\u003c\/li\u003e\n\u003cli\u003eSoft food-grade silicone flanges improve comfort and can reduce soreness during use.\u003c\/li\u003e\n\u003cli\u003eClosed system and duckbill valve design help prevent milk backflow and protect the pump motor.\u003c\/li\u003e\n\u003cli\u003eLower cost than branded originals, offering good value for occasional or backup use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMixed quality reports from customers mean occasional defects or sturdiness issues may occur.\u003c\/li\u003e\n\u003cli\u003eSome users have experienced leakage, so proper assembly and inspection are required after each cleaning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Content\u003c\/td\u003e\n\u003ctd\u003eTwo full sets: 21mm flange x2, collector cup x2, duckbill valve x2, diaphragm x2, linker x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Model\u003c\/td\u003e\n\u003ctd\u003eOnly Momcozy S12 Pro and S9 Pro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFood-grade BPA-free silicone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Type\u003c\/td\u003e\n\u003ctd\u003eClosed system with dual channel anti-backflow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCleaning\u003c\/td\u003e\n\u003ctd\u003eWash with warm soapy water; sterilize 100C for 5-10 mins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eIVARONAL (third-party replacement)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThis two-set replacement kit is a sensible value option for Momcozy S12 Pro and S9 Pro owners who need spare or replacement pump parts. It recreates the key comfort and anti-backflow features of the original assemblies at a lower price, though buyers should inspect parts for defects on arrival and confirm model compatibility. For most parents looking for comfortable, affordable spares, this kit is worth considering.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit my Momcozy S12 Pro?\u003c\/strong\u003e\u003cbr\u003eYes, they are designed specifically for Momcozy S12 Pro and S9 Pro models, but they do not fit S12 or S9 models; check your pump model before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these closed system parts?\u003c\/strong\u003e\u003cbr\u003eYes, the parts use a closed system with a dual channel anti-backflow design and a duckbill valve to help prevent milk backflow into the motor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should I clean and sterilize them?\u003c\/strong\u003e\u003cbr\u003eWash with warm soapy water and rinse well; you can then sterilize with boiling water or steam at about 100C for 5-10 minutes.\u003c\/p\u003e","brand":"IVARONAL","offers":[{"title":"Default Title","offer_id":48683331354843,"sku":"B0DMJV8D16","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61Par5KWSaL._AC_SL1000.jpg?v=1778665945","url":"https:\/\/gearmusthave.com\/products\/two-full-milk-collector-cup-sets-with-21mm-flange-compatible","provider":"GearMustHave","version":"1.0","type":"link"}