15
AB-7487-U
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.
IMPORTANT:
Do not put force on the valve sensor or its cable to prevent failure.
•
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. Also, install a strainer with 40 or more
meshes on the inflow side.
•
When installing the product to the pipes, do not allow any object, such as chips, to get inside a pipe or the valve. The 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. The valve cannot fully close, or the valve seat may get damaged causing fluid
leakage, due to the sealing material jammed inside the valve.
•
Before activating the product, fully open (in 100 % position) the valve and flush the pipes (with the product installed) at the
maximum flow rate to remove all the foreign objects. (Factory preset position: 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
Apply heat insulation to the valve, as
and
shown in Fig. 2. Do not apply it to the yoke or the actuator. If the heat
insulation is inappropriate, temperature measuring accuracy may decrease. If the yoke and/or the actuator are covered with
insulation material, the pointer cannot be checked or may be distorted.
When cutting the insulation material that covers the valve, be sure not to damage the valve sensor cable.
Factory preset position
The actuator shaft is positioned at 100% (in fully open position) for shipment. The shaft is thus completely turned clockwise,
and the pointer points at ‘100’. (See Fig. 6.)
Pointer
Figure 6. Pointer position for shipment
