Samson 3244 - Page 31

EB 8026 EN 5-3
Installation
Valves, which are not installed in the pipe-
line in the upright position with the actuator
on top, must be supported or suspended.
Valve accessories
Î During connection of valve accessories,
make sure that they are easily accessible
and can be operated safely from the
work position.
Vent plugs
Vent plugs are screwed into the exhaust air
ports of pneumatic and electropneumatic de-
vices. They ensure that any exhaust air that
forms can be vented to the atmosphere (to
avoid excess pressure in the device). Further-
more, the vent plugs allow air intake to pre-
vent a vacuum from forming in the device.
Î Locate the vent plug on the opposite side
to the work position of operating person-
nel.
AAB
B
A
AB
B
A
AB
B
AAB
B
A
AB
B
A
AB
B
A
AB
B
AB
A
B
Heating with diverting valve (FA) or cooling with diverting valve (FE)
Installation in return ow pipe Installation in ow pipe
Flow pipe
Installation in return ow pipeInstallation in ow pipe
Heating with mixing valve (FA) or cooling with mixing valve (FE)
Fail-safe action: FA = "Actuator stem extends", FE = "Actuator stem retracts"
In heating applications with FA, the heating medium (ow) is shut off in the fail-safe position,
in cooling applications with FE, cooling is maintained in the fail-safe position.
Mixing service
Temperature control Q = constant
Diverting service
Flow control Q = 0 to 100 %
Flow pipe
Flow pipe
Flow pipe
Flow pipe
Return ow
pipe
Return ow
pipe
Return ow
pipe
Return ow
pipe
Flow pipe
Flow pipe Flow pipe
Return ow
pipe
Return ow
pipe
Return ow
pipe
Return ow
pipe
Fig.5-1: Typical installations