Pneumatically operated equipment for balI valve
HANGDA company can provide ball valve with ideal pneumatic equipment according to applicable requirement such as the type, pressure rating, diameter, temperature, and medium of ball valve. The type, features, output turque, etc., Are briefly introduced as follows, which can also be equiped with pneumatic actuators based on customers' requirement and usage. The accessories for the pneumatic actuators are also needed to be taken into consideration, which include 3 connectors for gas source treatment ( i. e. pressure reducing vale,filter,oil-fog generator), solenoid valve,air switch, electric positioner, limit switch, speed regulator, pressure balance valve and manual operator ect.
HANGDA company can determine the operation turque of the ball valve based on its type, specification, actual working pressure and working temperature, and medium, and can select suitable electric actuator with right type and specification by taking into consideration of customers' comprehensive requirement of the ball valve, such as rotational speed, explosion-proof function, voltage, electric current, application environment, remote control, demand of intellectual control, overall sizes, pricing, and after sale service etc.. Electric actuator can also be equiped according to customers' requirement. As there are quite a lot elements that need to be considered for the electric actuator, it is hopeful that when placing order, customers are invited to communicate fully with HANGDA company to ensure the correct and ideal equipment for the electric actuator of ball valve.
Equipment of worm gear for ball valve

Operation torque of floating ball valve
The operation torque data of soft sealed floating ball valve in the following table are calculated based on normal temperature and clean medium. As selecting actuator. it is suggested that drive torque of actuator be more than 1.3 times the operation torque of ball valve at least. In case of high temperature and low temperature working conditions or unclean medium, it is possible that valve operation torque gets increased, which should be taken into full consideration as selecting actuators. Operation torque for metal to metal sealed floating ball valve is about 4 times that of soft sealed floating ball valve.
Operation torque of trunnion ball valve
The operation torque data of soft sealed trunnion ball valve in the following table are calculated based on normal temperature and clean medium. As selecting actuator, it is suggested that drive torque of actuator be more than 1.3 times the operation torque of ball valve at least. In case of high temperature and low temperature working conditions or unclean medium, it is possible that valve operation torque gets increased, which should be taken into full consideration as selecting actuators. Operation torque for metal to metal sealed trunnion ball valve is about 3~4 times that of soft sealed trunnion ball valve.



