Valves in Action -
Pressure reducing valve DM 652adV Pressure reduction of corrosive fluids in the chemical industry
The production cycles in many chemical industries release caustic waste, often in liquid form, which must be reliably removed from the current process. The discharge of such fluids proves to be rather difficult since many processes take place under excess pressure.
By the use of medium-operated pressure reducing valves, the hazardous medium can be brought down to a lower level, thus the handling of caustic or corrosive media turns out to be less dangerous. The diaphragm-controlled pressure regulating valve DM 652adV used in this case is exposed to severe corrosion depending on the caustic medium and the ambient conditions such as temperature, pressure etc. The design of the DM 652adV must take various corrosion types into consideration: surface corrosion may be avoided through properly selected material, the correct combination of materials impedes contact corrosion and elaborate design details counteract crevice corrosion. Hence, the valve’s body is manufactured from the solid. The high material costs pay for themselves thanks to the longer operational lifetime with reduced maintenance costs and downtimes.
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