Lift type fluorine lined check valve for the control of corrosive or strongly corrosive media, the valve body cavity surface covered with PTFE plastic, with high strength, good corrosion resistance; applicable to different work temperature and fluid pipeline, to prevent all kinds of pipeline or equipment on the media backflow of the one-way opening and closing. Applicable to various concentrations of strong alkali organic solvents and other corrosive gases, liquids and media pipeline use.

Lift type fluorine lined check valve when the medium from the valve body arrow shows the direction of flow into the valve body, the media pressure on the valve flap to produce upward thrust, when the media thrust is greater than the flap gravity, the valve opens. When the pressure of the medium after the valve pressure on the valve plus the valve's own gravity is greater than the valve pressure on the valve, the valve is closed to stop the medium backflow.

Lift through check valve structure is similar to the general disconnecting valve, its valve flap along the channel center for lifting movement, reliable action, generally can only be installed in the horizontal pipeline, lifting the common characteristics of vertical check valve valve valve flap along the valve access axis to do the lifting movement, generally should be installed in the vertical pipeline. Rotary stop valve flap rotary movement around the axis, the fluid resistance is generally smaller than the lift check valve, suitable for larger caliber occasions, the installation position is not restricted, usually installed in the horizontal pipeline, butterfly check valve structure for the soft sealing double eccentric flange connection, micro-resistance slow closure butterfly check valve valve valve outside the design of the slow closure device, which is conducive to reducing the resistance to flow and vibration, reduce the impact of water hammer.