* ND 15 (1/2") to ND 600 (24"). * ISO NP 20 to 750 (Class 150 # to 4500 #). * Carbon steel, alloyed steel, stainless steel, duplex, super-duplex. * Parallel slide gate valve allowing free expansion. * Bolted bonnet or Pressure seal bonnet. * Nuclear - Armament - Industry. * No binding effect (no disc wedge) whatever the temperature or the actuator closing torque. * Options : o automatic anti-overpressure balancing device, o disc substitution ring in order to reduce pressure drop, o connection for periodic sampling with very low weight bellows globe valve.