🌈 After we improved it, the duckbill valve has a slit that allows you to flow smoothly during injection, ensuring the operation of the machine,meet-oem standard
🌈 Fix the issue that check valve broken, cracked, or defective on your pump
🌈 All brand-new-unused parts
🌈 If you have any problems with the product ,please Do not hesitate to contact with us, we will do our best solving it for you.