Samson 3372 - Page 30

5-4 EB 8313-3 EN
Mounting and assembly
Mounting using rods (formC, see Fig.5-2)
1. Remove the stem connector clamps (A29)
from the actuator.
2. Insert the rods (A11) into the bushings
(A9) and place them in the correspond-
ing holes on the valve bonnet (2).
3. Tighten the rod nuts (A119) in alternat-
ing sequence. Observe tightening
torques.
4. Fail-safe action "stem extends": position
the stem connector clamps (A29) and
screw them tight. Observe tightening
torques.
Fail-safe action "stem retracts": apply
pressure to the top diaphragm chamber
until the actuator stem touches the plug
stem. Position the stem connector clamps
(A29) and screw them tight. Observe
tightening torques.
A11
A119
2
A9
2 Valve bonnet
A9 Bushing
A11 Rod
A119 Rod nut
Fig.5-2: Mounting using rods (formC), 120cm²