12
AB-7487-U
Installation
Precautions for installation
WARNING
When handling or transporting any heavy product (more than 39.7 lb (18 kg)), carefully move the product with a
handtruck or the like, or with 2 or more people.
Careless lifting or accidental dropping of the product may result in injury or product damage.
CAUTION
Do not freeze this product.
Doing so may damage the valve body and cause leakage.
When piping this product, be sure there is no foreign matter in the pipes.
If foreign matter remains in the pipes, the product may break down.
Install, wire, and use this product under the conditions specified by this manual.
Failure to do so may cause fire or device failure.
Use full face gaskets for flat face flanges.
Failure to do so may damage the flanges or cause leakage outside of the valve.
IMPORTANT:
•
This product requires straight pipe runs (valve diameter × 2 long) on the inlet and outlet sides for accurate
flow measuring.
•
When installing the product with flange gasket, do not use the rubber gasket or the gasket that goes inside
the pipe. Doing so might cause incorrect measurement and control of flow.
•
Install the product to a pipe so that they are electrically connected at the same potential. If the valve and the
pipe are electrically isolated, noise might be generated, causing incorrect measurement and control of flow.
•
Model FVY51_FJ is the valve and actuator integrated into a single unit. Do not combine the valve with any other actuator,
or do not combine the actuator with any other valve.
•
To remove foreign objects inside the pipes, install a strainer with 40 or more meshes on the inflow side of each valve. If
the strainers cannot be installed on the inflow side of each valve, install it on the pipe diverting sections (sections diverting
from main piping system to sub piping system).
•
Install the product so that the flow direction of process fluid agrees with the arrow indicated on its valve body.
•
Do not install the product nearby a steam coil, pressurized hot-water coil, or any high heat source.
High temperature radiation might cause malfunction of its actuator.
