Valve ring arrangements in metallic valves, control valves, condensate removal devices, and other means for the prevention of leakages due to corrosion

摘要

A valve ring arrangement is disclosed in which the corrosion sensitive parts of shut-off valves, control valves and condensate-removal devices are kept out of contact with condensate accumulations. Also disclosed are float and bucket-type condensate-removal devices which are protected against shutdown corrosion by means of automatically draining them during shutdowns.