Dear Vishnu, Regarding the ...
Published by Bruno Peeters, managing director at Model Engineering
Dear Vishnu,
Regarding the valve drives, I would recommend electropneumatic drives (piston or diaphragm type) with solenoid valves (on air side) for open/close applications and with electropneumatic positioners for modulating applications. These are far more reliable compared to electrical servomotor drives and less expensive inluding air compressors and dryer when you have 3 or more valves.
Regarding the valves I would recommend full bore ball valves for diameters up to DN50 (2") and butterfly valves for larger diameters in most applications. For thick sludge containing fibers (hairs, ...) the butterfly valves shall best be replaced by knife valves.
For pressurized clean water or air and small diameters solenoid valves can be used.
1 Comment
Much appreciated.
Published by Vishnu Ravi Ram K, Environmental Engineer