Installing The Valve After Service Work; Service Work; Replacing The Gasket - Samson 3246 Mounting And Operating Instructions

− Replacing the seat and plug ->
'Globe valve, Class 600 and 900/
PN 100 and 160'
The actuator can remain mounted on the
valve for the following service work.
− Replacing the circulation inhibitor ->
'Globe and three-way valve,
Class 150 and 300/PN 16 and 40'
− Replacing the seat and plug ->
'Globe valve, Class 150 and 300/
PN 16 and 40'
Note
To remove an actuator with "stem extends"
fail-safe action and/or with preloaded
springs, a certain signal pressure must be
applied to the actuator (see associated actu-
ator documentation). Afterwards, the signal
pressure must be removed and the air supply
disconnected again and locked.
Tip
We recommend removing the valve from the
pipeline before performing any service work
(see the 'Removal' section).
The following service work can be per-
formed after preparation is completed:
− Replace the gasket (see section 9.4.1)
− Replace the circulation inhibitor (see sec-
tion 9.4.2).
− Replace the packing (see section 9.4.3)
− Replace the seat and plug (see sec-
tion 9.4.4)
EB 8046 EN
9.3 Installing the valve after

service work

1. Mount actuator. See associated actuator
documentation and the 'Installation' sec-
tion.
2. Adjust lower or upper signal bench
range. See associated actuator docu-
mentation.
3. If the valve has been removed, re-install
the valve into the pipeline (see the 'Instal-
lation' section).
4. Put the control valve back into operation
(see the 'Start-up' section). Observe the
requirements and conditions for start-up
or putting the valve back into operation.
9.4 Service work
Î Before performing any service work,
preparations must be made to the control
valve (see section 9.2).
Î After all service work is completed, check
the control valve before putting it back
into operation (see 'Testing the installed
valve' in the 'Installation' section).
9.4.1

Replacing the gasket

NOTICE
!
Risk of control valve damage due to
incorrect servicing.
Î The gasket can only be replaced when
all the following conditions are met:
Servicing
9-5