VALVE Russian patent published in 2000 - IPC

FIELD: nuclear power engineering. SUBSTANCE: valve is designed for use in dehydration of spent fuel assemblies of nuclear reactors at nuclear power plants, filling of inner spaces of transport and packing units with inert gas, and replacement of physical state monitoring transducers for spent nuclear fuel placed in transport and packing unit for storage. It has body with inlet and outlet pipe connections, cover, drive shaft, shutoff element with shank, and orifice plate. Central part of orifice plate is coupled with threaded rod which is hinged to shutoff element and drive shaft. Cover, body, and orifice plate are joined together over outer contour by means of single weld. EFFECT: improved service life of orifice plate and tightness of monitoring unit actuating element. 2 dwg