SMC Networks AKP Series Operation Manual page 7

Design/ Selection
Warning
(16) In the following cases, malfunctioning or
noise due to oscillation may occur.
- When the differential pressure between the port
1 side and port 2 side is smaller than the
minimum operating pressure
- When the IN side piping of the product or the
effective area of the directional control valve is
smaller than that of the product
- When the pressure drop on the port 1 side is
slower than that of the port 2 side during
operation of the product
- When the supply pressure at the port 21 is
reduced (Refer to the piping diagram below.)
- When the port 1 side piping (tube) is bent or
crushed
Recommended
Mounting
Warning
(1) Operation Manual
Install the products and operate it only after
reading the operation Manual carefully and
understanding its contents. Also, keep the Manual
where it can be referred to as necessary.
(2) Ensure sufficient space for maintenance
activities.
When installing the products, allow access for
maintenance.
(3) Tighten threads with the proper tightening
torque.
When installing the products, follow the listed
proper torque.
(4) Use R external threads with Rc internal
threads and NPT external threads with NPT
internal threads and G external threads with
G internal threads.
(5) Check piping directions before mounting.
Connect the inlet to the directional control valve
and the outlet to the actuator.
(6) Do not apply excessive force or shock to the
body or fittings with an impact tool.
It can cause damage or air leakage.
(7) For handling One-touch fittings, refer to the
Fittings and Tubing Precautions.
(8) Pay attention to the method of mounting on
the cylinder.
For the horizontal type, a hexagon wrench needs
to be used. The product cannot be mounted with
an open-end wrench. For the mounting of the
vertical type, an open-end wrench needs to be
used.
(9) Conduct mounting and removal of the
vertical type by holding the width across flats
of the body B and turning it by using an
appropriate wrench.
Do not apply torque at other points as the
product may be damaged. Rotate Body A
manually for positioning after installation.
(10) To install and remove the product with
hexagonal hole, use an appropriate hex key
and push it into the hexagon hole of the stud.
NG Do not apply torque at other points as the
product may be damaged. Rotate Body A or B
manually for positioning after installation. Refer to
the applicable dimension of the hexagon wrench.
-6-
Mounting
Warning
Hex Key (Nominal)
Connection
Thread Metric (mm)
R1/8 , G1/8 6
NPT1/8
―
R1/4 , G1/4 8
NPT1/4 ―
Body A
Body B
*Illustrations of vertical type (left)
and horizontal type (right) products
Imperial (Inch)
―
7/32"
―
5/16"
End Body
Stud