Compatibility8pcs Duckbill Valves compatible with Lansinoh Signature Pro Smart pumpSmartpump 30 Smart pumpSmartpump20 Made by IVARONALNot Original Mom cozy Parts Same Suction Power as OEM Parts Duckbill valves without gap on valve tips Same suction as orignal pump parts Silicone duckbill valve designed to prevent backflow of breast milk help to drain breast milk to the bottom of container no loss of suction Premium MaterialThese replacement pump parts are made of foodgrade silicone material durable no leaking BPA free soft and odorless skinfriendly for mommy and baby Easy to Clean Wash duckbill valves and diaphragm for momcozy m5 after each use with warm soapy water and rinse well Please use boiling watersteam with a temperature of 100212for 510mins Hard brushes is not recommended please use finger tips instead Customer Service Any questions with our breast pump parts accessories compatible for m5 momcozy breast pump please feel free to contact us via email we will do our best to help you solve the problem