AB-6675
10
Mounting position
The ACTIVAL can be mounted in any position ranging from upright to sideways (90
tilted). The ACTIVAL should be installed
with its actuator vertically positioned above the valve body. (See Fig. 7.) However, the ACTIVAL must be installed always in
upright position outdoors.
Figure 7. Mounting position
Piping
CAUTION
When installing this product, hold it in the proper position and securely fasten it to the pipes.
Excessive tightening or improper installation position may damage the valve.
Check that the model number of the product is what you ordered. The model number is shown on the label attached to the
yoke.
Install a bypass pipe and gate valves on the inflow, outflow, and bypass sides. If difference between the coil side pipe
resistance (which contains coil resistance) and the bypass side pipe resistance are extremely large, use the gate valves to
adjust the pressure. Also, install a strainer with 40 or more meshes on the inflow side.
When installing the ACTIVAL to the pipes, do not allow any object, such as chips, to get inside a pipe or valve. Valve cannot
fully close, or the valve seat may get damaged causing fluid leakage, due to an object jammed inside the valve.
When piping, do not apply too much sealing material, such as solidifying liquid and tape, to the pipe connection sections so
that these materials flow into the valve. Valve cannot fully closes, or the valve seat may get damaged causing fluid leakage,
due to the sealing material jammed inside the valve.
Before activating the ACTIVAL, flush the pipes (with the ACTIVAL installed) at the maximum flow rate to remove all the
foreign substances. Fully open (100 % position) the ACTIVAL to flush. (Factory preset position: Port A 100 %)
CAUTION
After installation, make sure no fluid leaks from the valve-pipe connections.
Improper piping may cause fluid leakage outside of the valve.
Do not put a load or weight on this product.
Doing so may damage the product.
Heat insulation
Do not apply heat insulation to the actuator or to the yoke, as
shows in Fig. 5. If the yoke and the actuator are covered
with insulation material, the pointer cannot be checked and may be distorted.
Factory preset position
The actuator shaft is positioned at 100 % (in fully open position) of the port A for shipment. The shaft is thus completely turned
clockwise, and the pointer points at ‘100’. (See Fig. 8.)
Figure 8. Pointer position for shipment
Pointer
Upright Sideways
(Indoors only)
Correct mounting
Incorrect mounting
