Samson 3271 - 5.3 Mounting the Device

EB 8026 EN 5-5
Installation
5.3 Mounting the device
The activities listed below are necessary to
install the valve and before it can be started
up.
Risk of control valve damage due to over-
or under-torquing.
Observe the specied torques when tighten-
ing control valve components. Excessive
tightening torques lead to parts wearing out
more quickly. Parts that are too loose may
cause leakage.
Î Observe the specied tightening torques
(uAB0100).
Risk of valve damage due to the use of un-
suitable tools.
Î Only use tools approved by SAMSON
(uAB0100).
5.3.1 Mounting the actuator
onto the valve
Risk of personal injury due to preloaded
springs.
Actuators with preloaded springs are under
tension. They can be identied by the long
bolts protruding from the bottom of the actu-
ator.
Î Before starting any work on the actuator,
relieve the compression from the pre-
loaded springs (see associated actuator
documentation).
Depending on the version, SAMSON control
valves are either delivered with the actuator
already mounted on the valve or the valve
and actuator are delivered separately. When
delivered separately, the valve and actuator
must be assembled together on site.
Versions with V-port plug
In mixing valves in sizes larger than DN25,
the bottom plug is designed as V-port plug.
To achieve the best ow conditions inside the
valve, the V-port plug must always be in-
stalled with the port that releases the ow
rst when the valve opens facing toward the
valve outlet. This is the largest of the three
V-shaped ports (see Fig.5-3).
1x large V-port:
First to release the ow when the
plug is lifted out of the seat.
2x small V-ports
Fig.5-3: V-port plug
NOTICE
!
NOTICE
!
WARNING
!