Yamatake ACTIVAL VY51X2J, Specifications & Instructions

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7 AB-6465
Precautions for Installation
Environment
CAUTION
•
Avoid using the ACTIVAL in an atmosphere
containing oxidizing or explosive gas since it
may corrode the actuator, the valve or their
components.
•
The cover might be corroded by some
chemical and organic solvent. Do not ex-
pose the ACTIVAL to such substances.
•
The actuator may malfunction if being
placed near by hot objects. Do not install it
near by steam or hot water coils.
Piping
1) Do not mount Model VY51X2J ACTIVAL on a pipe
where water hammer occurs, or where solid objects
may accumulate.
2) Install the ACTIVAL in a position allowing easy access
for maintenance and inspection. Fig. 1 shows the
minimum clearance for maintenance and inspection.
When installing the ACTIVAL in a ceiling space, place
a drain pan under the valve.
3) Install a bypass pipe and gate valves on the inflow,
outflow and bypass sides. Also, install a strainer on
the inflow side. When the ACTIVAL is used in steam
applications, a strainer with 80 or more meshes is
recommended.
4) Do not apply heat insulation to the actuator and the
yoke. Apply heat insulation only to the area boxed
with dotted lines shown in Fig. 3 if necessary.
5) Before the installation, check the model number on the
label attached to the yoke. The process fluid should
flow in the direction indicated by the arrow marked on
the valve body.
6) The actuator can be mounted in any position from
upright to sideways. The ACTIVAL should be
installed with its actuator vertically positioned above
the valve body. (See Fig. 4.) However, the ACTIVAL
must be installed always in upright position outdoors.
Figure 4. Actuator mounting position
Figure 3. Area where heat insulation can be applied