10 Pcs 1 Way Check Valve Translucent Water Stop Hose Check Valve with Spring for Chemical Industry 12mm/0.5in Feature: 1. Good Replacement: This one way check valve can be used to replace the broken check valve to prevent the backflow of gas or liquid 2. PP Material: The one way stop valve is made of PP material, which has sufficient pressure bearing capacity and rigidity, wear resistant and durable 3. Strong Chemical Stability: The check valve has good thermal performance, strong chemical stability, non toxic and odorless 4. High Performance: The check valve has good ozone resistance, high temperature resistance and corrosion resistance 5. Widely Application: The check valve is used for fish tank, aquarium, food and beverage, medicine equipment, chemical industry Specification: Item Type: One Way Check Valve Material: PP Function: Connect the hose to prevent the backflow of gas or liquid Scope of Application: Fish tank, food and beverage, medicine equipment, chemical industry. Package List: 10 x One Way Check Valve