Ball check valve in ductile iron with flanged connection, intended for use on water and waste water. It has a machined seat which provides a good seal at low differential pressures. The valve is equipped with a lifting device as standard, which makes it possible to drain the pressure side before service. Equipped with a "quick cover" (up to DN 150) which allows easy open and close of the valve cover by loosen a few bolts and twist the cover when service is needed. Face-to-face length acc. to EN 558-1 basic series 48. Design standard according to EN 16767.