Azbil Corporation Actuator
Model VFR - FloWing Eccentric Rotary type Control Valves 3-7
Figure 3-11
(2) Place the assembled spring unit into the case following, in the reverse order, steps
(4) and (5) in subsection “3-4 : Disassembly of actuator”. In this case, do not hold
the assembly by its diaphragm. (See Figure 3-10.)
(3) Fold the cup-shaped diaphragm into the case using a soft plate and pay attention
not to scratch the diaphragm. (See Figure 3-11.)
~Note
1: Fold the diaphragm so that its circumference uniformly contacts the
ange surface of the case.
2: Regarding the diaphragm, pay attention to the mounting position of the
spring unit so that the gap between the inside circumference of the case
and the outside circumference of the piston becomes uniform.
Figure 3-12 Figure 3-13
3-6 : Mounting actuator on valve body
To mount the actuator on the valve body, follow, in the reverse order, the procedure
described in subsection “3-3 : Removing actuator from valve body”. After mounting
the actuator, adjust the actuator as described in subsection “3-2 : Adjusting the
actuator”.