Peaceful Pleasures Health and Wellness
S18/S21 Breast Pump Duckbill Valve & Diaphragm Replacement Set
S18/S21 Breast Pump Duckbill Valve & Diaphragm Replacement Set
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Keep Your Breast Pump Working Like New
Maintain peak pumping performance with this complete replacement accessory set, designed specifically for S18 and S21 electric breast pumps. 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.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Why Replace Your Breast Pump Parts Regularly?
Over 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 CDC recommends keeping all breast pump parts clean to reduce the risk of contamination.
What's Included in Each Kit
- ✅ 1x Silicone Diaphragm — Creates a secure seal for consistent suction
- ✅ 1x Duckbill Valve — Controls milk flow direction for efficient expression
- ✅ 1x Milk Collector — Catches every precious drop
- ✅ 1x Flange — Comfortable breast shield for a proper fit
Key Features
- 🤱 Compatible with S18 & S21 Electric Breast Pumps — direct-fit replacement parts
- 🧴 Soft Silicone + PP Material — BPA-free, skin-safe, and gentle during use
- 🧼 Easy to Clean — smooth surfaces resist milk residue buildup
- 💼 Pump Anywhere — use at home, in the office, or while traveling
- 📐 Compact Size — approx. 46×40mm (valve) and 110×118mm (diaphragm)
Specifications
| Material | Silicone + PP |
| Valve Size | ~46 × 40 mm (1.81 × 1.57 in) |
| Diaphragm Size | ~110 × 118 mm (4.33 × 4.64 in) |
| Compatible Models | S18 / S21 Electric Breast Pump |
| Country of Origin | Mainland China |
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Note: Please allow 1–2 cm variation due to manual measurement. Slight color differences may occur due to screen resolution settings.
Frequently Asked Questions
Q: Are these duckbill valve replacements compatible with all S18 and S21 breast pump models?
A: 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.
Q: How often should I replace my breast pump duckbill valves and diaphragm?
A: 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.
Q: Are these breast pump replacement parts safe for my baby?
A: 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.
Q: How do I clean and sterilize these silicone replacement parts?
A: 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.
