20
5. 4 Assembly Procedure of Valve Body and Actuator
5. 4. 1 Lever type
1) Secure the metal section of the body
①
using a
vice so that the flanges are not damaged. Set the
valve opening to the full-open position. [Fig.-30]
2) Secure the indicator
L21
and bonnet
to the body
①
with the hexagon bolts, hexagon nuts and spring
washers (2 pairs).
3) Install the lever to the shaft
③
while aligning the
lever with the full-open position of the indicator
L21
and secure the lever with the Hex. socket set screw
L26
and hexagon nut
L27
.
4) After assembly, turn the lever to verify that the
opening and closing operations are smooth.
5) Finally, adjust the full-close position in accordance
with “
Full-close position adjustment procedure
(1T lever)” in section 5. 5. 2.
5. 4. 2 Worm gear type
1) Secure the metal section of the body
①
using a
vice so that the flanges are not damaged. Set the
valve opening to the full-open position. [Fig.-31]
2) Set the actuator to the full-open position.
3) Insert the thermal insulating sheet
and bon-
net
onto the body as shown in the figure, and
then insert the actuator. At this time, check that the
alignment marks of the body
①
and actuator are
aligned.
4) Secure the body
①
and actuator by tightening the
hexagon bolts and spring washers (4 pairs).
5) Finally adjust the full-close position in accordance
with “
Full-close position adjustment procedure
(2U gear)” in section 5. 5. 3.
[Fig.-30]
・
When installing the original actuator to this prod-
uct without the actuator, check the alignment
marks and serial No. before assembly to ensure
that the actuator is the identical one which was
removed from the product.
・
Improper assembly causes misalignment of the
closing position, which may lead to leakage.
CAUTION
[Fig.-31]
Actuator
Screws
③
Shaft
Bonnet
Heat insulation sheet
①
Body
②
Disc
Lever
Screws
③
Shaft
Bonnet
①
Body
L26
Hex. socket set screw
L21
Notch plate
L27
Hexagon nut
Summary of Contents for 304YA
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