4. Actuators, Valves, Flipper Valves, Butterfly Valves, Consoles, Zone Valves and Accessories 4.2 Valves 4.2.20 Specialities 4.2.20.2 Specialities for RGV- and HMVF-Valves KK... Valve cone of CrNi-Seel, for RGV...- and HMVF...-valves ...back