Check and bottom valves

Lyma product range

Check & bottom valves

A check valve only allows media to flow in one direction. When the flow decreases, the valve closes and prevents the fluid from flowing backwards through the valve. The valves are commonly used in the process industry and come in different designs: ball check valve, flap check valve, ring check valve and globe check valve. Usually a check valve creates a pressure drop, to minimise the pressure drop, Asahi's flap check valve is recommended as it has virtually free flow when the valve is fully open.

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Asahi butterfly check valve type 33 DN15-200

Asahi flap check valve type 33EL DN15-200

Check valve type 34 DN32-500

Asahi bottom valve type 30 DN15-100

Asahi ball check valve type 32 DN15-100

Richter PFA/PTFE lined ball check valve type BC/CV DN15-150

Connections and dimensions

The non-return valves can be supplied with various connection options: wafer clamping, flange connection, weld, thread connection and for bonding. The dimensional range is DN15-500.A bottom valve is installed at the end of a suction line and prevents backflow of liquid. This type of valve is fitted with a strainer basket to efficiently collect the solid particles.Lyma provides a wide range of check and bottom valves in different designs and materials. This means that we have a solution for the vast majority of corrosive applications.