Pneumatic actuator ROTADISK
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Application Air actuator ROTADISK have been designed for actuation of ball valves and butterfly valves. They work as a lever of the first kind. Energy which is generated when the air pressure operates two travelling pistons is transmitted by double lever on the output shaft of the actuator. This design enables optimal valve actuation. Kinetics of this mechanism offers maximum torque in the beginning and in the end, i.e. when opening and closing the valve. Air actuator power output depends on driving pressure size. Air actuators ROTADISK run at pressures from 3 up to 8 ATM. Diagram: type RDF |
ROTADISK type RD:
Double-acting pneumatic actuator, air opens and shuts the valve. Double-acting pneumatic actuators are
manufactured from Rd 2,5 up to RD 640, note: torques are from app. 25 up to 10200
Nm.
ROTADISK type RDF:
Single-acting pneumatic actuator, air opens the valve, spring shuts the valve
(also available converse function), Single-acting pneumatic actuators RDF are
manufactured from RDF 2,5 up to 640.
There are 3 basic spring combinations for each air actuator size. They are always figured
after the actuator size -1, -2, -3.
-1: the least powerful combination (small
spring for each cylinder), it is used for low
driving pressure up to app. 4 Atm
-2: medium combination (large spring for
each cylinder), it is used for driving pressure
up to 6 Atm
-3 the most powerful combination (large and
small spring for each cylinder), it is used for
driving pressure app. from 5 to 8 Atm
Suitable driving air
Driving air must be filtered (max. solid particle to 50 micron), dry. Needed
not to be lubricated.
Max. pressure: 8 Atm
Note: Specially adapted actuators can be powered by non-aggressive liquids
Service environment
Air actuators ROTADISK are used for (in standard configuration): from -
20°C up to 80°C.
Actuators can work up to 180°C when specially adapted (must be extra
ordered).
