Swing check valves are one-way valves characterized by a swinging shutter or clapet which is hinged on one side. In addition to the pressure of the fluid, to prevent backflow these valves exploit the gravitational force acting on the shutter and are therefore suitable for vertical installations with downward flow. They are also particularly suitable for dense and viscous fluids and with solid particles inside.
You can find clapet valves in pvc or in metallic materials such as bronze, brass or stainless steel. The type of system in which they are installed, the environment and the fluid conveyed are fundamental in choosing the most suitable material. Stainless steel, in particular, has the advantage of being particularly resistant as well as sustainable.