Made from food-grade silicone, these replacement duckbill valves and backflow protectors offer a reliable fit for Spectra S1, S2, 9 Plus, and SG breast pumps. The set is designed to function as compatible pump parts rather than original manufacturer accessories, ensuring users an affordable way to maintain their pumping equipment. Each valve is crafted with precision-molded silicone that remains flexible over repeated use, while the backflow protector features a sturdy housing that seals securely against the pump body. This combination helps preserve suction consistency during each session.

The duckbill valve works by opening under vacuum pressure to allow milk flow into the collection bottle, then closing tightly when pressure releases to prevent backflow into the tubing. The backflow protector adds an extra barrier that stops milk from traveling upward into the pump mechanism, thereby shielding internal components from moisture and potential damage. Together these parts contribute to efficient milk expression while reducing the risk of contamination or loss of suction. Frequent replacement of these components is recommended to maintain optimal pump performance and hygiene.

Constructed with smooth, non-porous surfaces, the valves and protectors are easy to clean by hand or in a dishwasher’s top rack. The silicone material resists discoloration and warping even after many cleaning cycles, helping to extend the useful life of each part. Users will find that the parts snap securely into place on Spectra flanges and backflow assemblies without excessive force, yet remain stable during use. The set includes multiple valves and protectors, offering a practical stock for rotating replacements.

These replacement components are particularly suited for parents who pump multiple times daily and need reliable backup parts. They work effectively with standard Spectra bottles and tubing, ensuring seamless integration into existing pumping setups. The affordable price point makes it economical to keep spares on hand for travel, work, or late-night sessions.

No original Spectra branding is present, but the parts have been engineered to match the dimensions and performance characteristics of genuine accessories. For those seeking cost‑effective maintenance of their Spectra S1, S2, 9 Plus, or SG pump, this valve and protector set delivers dependable function without compromising on quality. Regular replacement helps preserve milk output and pump longevity, making these accessories a sensible addition to any pumping routine.