CAUTION
Chamfer the edges of the pipe flanges.
Sharp edges can cause an injury.
Check that the pipes on both sides of the valve are firmly supported.
Insufficient support may cause leakage from pipe connections.
After installation, check that the pipes are still properly aligned.
Misalignment may cause fluid leakage from pipe connections.
Install the butterfly valve with the valve (blade or disk) fully closed.
Otherwise the valve might be damaged.
If the eyebolts (eyenuts) attached to the actuator are used to lift the valve,
make sure that the weight does not exceed the limit specified in the user's
manual. An excessive load may damage the actuator or cause air leakage.
Use bolts and nuts that conform to the standards for the pipe flange.
Otherwise fluid leakage could result.
Use new flange gaskets that are appropriate for the properties of the fluid,
the operating temperature, and the pressure. Damaged gaskets may cause
fluid leakage.
Open the valve fully before flushing the inside of the piping, and do not
change the valve travel while the pipes are being flushed. Otherwise, the
valve may be damaged by welding spatter or other foreign matter.
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