EB 8048-2/-3 EN
29
Mounting and start-up
perform service and repair work on
them.
Mounting position
Generally, we recommend installing the
valve with the actuator upright and on top of
the valve.
In the following versions, the valve
must
be
installed with the actuator on top:
−
For valves that are intended to be free of
cavities
Î
Contact SAMSON if the mounting posi-
tion is not as specified above.
Support or suspension
Depending on the valve version and mount-
ing position, the control valve and pipeline
must be supported or suspended. The plant
engineering company is responsible in this
case.
Premature wear and leakage due to insuffi
-
cient support or suspension.
In the following versions, the control valve
must be supported or suspended:
−
Valves that are not installed with the actua
-
tor in the upright position on top of the
valve.
Attach a suitable support or suspension to
the valve.
NOTICE
!
Table 5:
Inlet and outlet lengths
Q
a x DN
b x DN
State of process
medium
Valve conditions
Inlet
length a
Outlet
length b
Gas
Ma ≤ 0.3
2
4
Vapor
Ma ≤ 0.3
1)
2
4
Liquid
Free of cavitation/w < 10 m/s
2
4
Cavitation producing noise/w ≤ 3 m/s
2
4
Cavitation producing noise/3 < w < 5 m/s
2
10
1)
No saturated steam
Q
Flow rate
a
Inlet length
b
Outlet length
