OSPZX225-EN
8/10
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
HANDLING & STORAGE
HANDLING
Do not drop or throw the product as it may break.
STORAGE
• Store away from dust, moisture and direct sunlight.
If possible, store in the original package.
• Do not remove a dust proof cap until the piping.
CHECKING
• Check the product code before installation.
• Make sure that the bolts are not loose.
INSTALLATION
PRECAUTIONS
• Flush the pipeline carefully before installing the
valve. Foreign particles, such as sand or pieces of
welding electrode, will damage the disk and seats.
• When piping the valve disk should be closed before
mounting.
• Avoid oil or grease when using EPDM seat.
• The butterfly valve should be piped upstream of the
elbow. When piping downstream from the elbow,
considered a straight line that is at least five times
the length of the pipe.
• The valve stem should be mounted perpendicular to
the flow for biased fluid.
PIPING
• Using a pipe with too long a thread will damage the
valve.
• If sealing tape or sealant gets inside the valve, the
valve seat leaks or malfunctions.
• When connecting a pipe or fitting to a valve, use a
tool on the octagonal or hexagonal part of the
insertion side and screw it.
• Refer to the recommended tightening torque table
and do not apply excessive torque.
Valve size [mm] Torque [N m]
015
25 to 35
020
40 to 50
025
50 to 60
032
60 to 80
040
75 to 85
050
90 to 110
Socket End
Should use adhesive suitable for valve materials.
ENVIRONMENT
• Do not install in place where corrosive gas is present
or where vibration is heavy (0.5 G or more).
• When radiant heat causes the surface temperature
of the control unit to exceed 50 °C, provide an
appropriate shielding plate.
• If there is a possibility that the fluid and drive part
freeze, please take measures to prevent freezing.
• For single-acting type, prevent water and dust from
coming into air exit.
POSITIONING
Should be positioned through 90° upward from
horizontal. Provide space around the product to
allow manual operation, inspection and replacement
work.
AIR PIPING
• Pneumatic actuator has an air supply ports to
operate piston.
Double-acting type
PND : Rc 1/8
Coupling OD
less than 14.5
TAD-040
: Rc 1/8
TAD-050 to 160 : Rc 1/4
Single-acting type
PSO / PSC : Rc 1/8
TAO / TAC : Rc 1/4
• Piping of double-acting type is connected by seal
tape on PORT A / B. Piping of single-acting type is
put seal tape only on the air intake port.
• PND / PSO / PSC: PPS resin air supply port may be
damaged if over tighten, please lightly tighten by
hand.
• Never put anything on the actuator or make it into a
foothold.
Fast
Slow
Fast
Slow
PORT A
PORT B
Air intake
Plug
