One-way Valves, Non-return Valves, Check Valves

One-way valve components are used to create a unidirectional flow in a device. They are in fact elastomeric sealing elements that allow forward flow and prevent backflow. There are different designs. If you like low opening pressure and ease of assembly then the first choice would be a duckbill valve. If you need a certain cracking pressure or a low-pressure drop at higher flows then an umbrella valve would be our recommendation. Click "How they work" in each of the valve categories to find out more about the specific valve function

The following are one-way valves

Duckbill Valves
Umbrella Valves
Cross slit valves