Retrofitting of Valve Actuators

Demca provides on site surveys to establish the best solution with regards to upgrading existing manually operated valves or dampers, cost effectively and with the minimum of plant downtime.

This service would include sizing of actuators to suit the application, design and manufacturing of adaptions, couplings, extensions spindles, pedestals etc.. required to motorise existing or new valves.

Once fitted, the actuator is commissioned to suit the stroke of the valve, and secondary settings are made to suit site control and indication requirements.

Such servicing work entails

a) Removal of the actuator from site.

b) General inspection and testing of actuator operation.

c) Quotation of spares required to return actuator to operational status.

d) Shot-blasting and spray-painting of actuators

e) Replacement of o-rings and oilseals.

f) Replacement of oil.

g) Replacement of any necessary spares and retesting of operation.

h) Re-installation and re-commissioning of actuator to suit the stroke of the valve.


Before & After


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