Feature:1. 12 Pcs: This set includes 12 pcs single way check valve, which is used to connect the hose to prevent the backflow of gas or liquid2. Good Performance: This water stop check valve has good ozone resistance, high temperature resistance and corrosion resistance3. Strong Chemical Stability: The check valve has good thermal performance, strong chemical stability, non toxic and odorless4. Wear Resistant and Durable: The one way stop valve is made of PE material, which has sufficient pressure bearing capacity and rigidity, wear resistant and durable5. Widely Application: The check valve is used for fish tank, food and beverage, medicine equipment, chemical industry, etc.Specification:Item Type: Single Way Check ValveMaterial: PEFunction: Connect the hose to prevent the backflow of gas or liquidScope of Application: Fish tank, food and beverage, medicine equipment, chemical industry.Package List:12 xSingle Way Check Valve