Installation, Operation and Maintenance Manual
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H-A070-E-3
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3-Way Ball Valve Type23 Pneumatic Actuated Type AR 15-50mm (1/2”-2”)
25
18. Method of adjusting face pressure between ball and seat
- If you do work with the piping installed, drain the piping of all its fluid. Some fluid will remain
in the valve. Therefore wear protective goggles and protective gloves. (You may otherwise
get injured.
- Take care not to over-tighten the Union nut. (The valve can be damaged.)
- Do not use the pipe wrench. (The valve can be damaged.)
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Strap wrench
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Safety goggles
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Protective gloves
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Handle (For manual valve)
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Base plate removing jig (Optional items)
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Adjust surface pressure
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Procedure
1) Completely eliminate pressure in the pipe, and completely
discharge fluid from line.
2) Turn off the solenoid valve, double acting and air to open
will left opening, air to shut type will right opening.
3) Remove the actuator according to Procedure 3) to 8) in the
"Actuator removal procedure".
4) If a shaft adapter is attached, remove it.
5) Loosen the three Union nuts with a strap wrench.
6) Remove the body part from piping system.
7) Remove the O-ring (A) at the Carrier.
8) Mate the convex on the upper part of the manual handle to
the recess on the union of either of the right-hand side for
the "double action type” type and "air to open type” or the
left-hand side for the "air to shut type”. Then, adjust the
surface pressure by rotating the union.
9) Attach the manual handle to the stem, then turn it for 180
degrees to set right-hand for "double acting type” and "air to
open type”, or left-hand for "air to shut type".
10) Remove the handle from the body.
11) Mate the convex on the upper part of the manual handle to
the recess on the union of either of the left-hand side for
the "double action type” type and "air to open type” or the
right-hand side for the "air to shut type”. Then, adjust the
surface pressure by rotating the union.
12) Attach the handle for manual valve to the stem, and
confirm that manual operation can be performed smoothly.
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Assembly
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1) Perform in reverse order from step 7) of "Adjust surface
pressure".
* When attaching the actuator to the valve, confirm that the
direction of the opening display of the actuator and the
direction of the opening indication label at the top of the
valve stem are correct. Then push the actuator into the top
flange of the valve to attach.
Warning
Caution
Caution
Necessary items
Tighten
Loosen
