Maintain the performance of your S39 or S39+ Wearable Breast Pump with this genuine replacement silicone valve. The silicone valve is an essential component that helps maintain consistent suction for efficient milk expression. Replacing worn or damaged valves regularly can improve pumping performance and help keep your breast pump working at its best. Made from soft, durable, BPA-free silicone, this replacement valve is easy to install, clean, and designed specifically for the S39 and S39+ Wearable Breast Pumps. Features • Genuine replacement silicone valve • Compatible with S39 & S39+ Wearable Breast Pumps • Helps maintain strong and consistent suction • Easy to clean and replace • Ideal for replacing worn or damaged valves Compatibility: S39 & S39+ Wearable Breast Pumps only.