Features STANDARD SIZE: These single way check valves are available in standard sizes and are a direct replacement for old or damaged check valves. PP PLASTIC: Made of excellent PP plastic material, with good ozone resistance, high temperature and corrosion resistant, not easy to damage. GOOD PERFORMANCE: The check valve has sufficient pressure bearing capacity and rigidity to meet the actual use requirements within its proper range. EASY TO CONNECT: The check valve can be directly connected to the appropriate hose to prevent the backflow of gas or liquid, and it is not easy to leak. 10PCS IN 1 SET: Including 10pcs single way check valves, widely used in home fish tank, medical equipment, chemical and food factories, etc. Specification: Item Type: Check Valve Material: PP Function: Connect the hose to prevent the backflow of gas or liquid Scope of Application: Fish tank, food and beverage, medical equipment, chemical industry Package List:10 x Check Valve Package List 10 x Check Valve