FHV is a flat-face screw-on coupling to be used in heavy duty applications. It can bear high working pressures and has a great flow capacity. The male part is assembled with a double patented valve and can be connected by hand, without tools, under residual pressure (max 35MPa). Connection is easier thanks to a special ball bearing system. The coupling is also provided with a safety sleeve against accidental disconnection. Its hydraulically stressed internal components are very robust; polyurethane seals allow high resistance to extrusion and wear. A further plus in the Zinc-Nickel surface treatment wich improves their resistance to corrosion (min 500h to red corrosion).