Azbil FloWing VFR - 3-4: Disassembly of actuator

Actuator Azbil Corporation
3-4 Model VFR - FloWing Eccentric Rotary type Control Valves
3-4 : Disassembly of actuator
To disassemble the actuator for parts replacement or servicing, follow the procedure
described below. (See Figure 3-5.) When disassembling the actuator, take care not to
damage the diaphragm or piston.
(1) Loosen then remove uniformly the bolts and nuts of the diaphragm case (top).
Remove the diaphragm case (top).
(2) Hold the bead section of the folded diaphragm with both hands and pull it
carefully upward. (See Figure 3-6.)
Figure 3-5 Figure 3-6
(3) After removing the folded diaphragm, pass the tting through the hole of the
stopper and pull out the spring unit.
(4) Loosen the anti-rotation lock nut and remove the fork from the end of the
actuator.