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Start-up and operation
6.1.3
Pressure test
NOTICE
!
Risk of the operating diaphragm bursting
due to excessive pressure during pressure
testing.
− The pressure must not exceed the maxi-
mum permissible pressure by 1.5 times the
pressure rating.
− Remove the control line from the regulator
and seal the open connection with a blank-
ing plug (accessories: blanking plug 8323-
0030 and seal 8412-0771).
Note
The plant operator is responsible for per-
forming the pressure test. SAMSON's Af-
ter-sales Service department can support you
to plan and perform a pressure test for your
plant.
NOTICE
!
Risk of valve damage due to a sudden pres-
sure increase and resulting high flow veloci-
ties.
Slowly open the shut-off valves.
34
During the pressure test, make sure the fol-
lowing conditions are met:
Detach the control line and seal the
–
openings at the valve body and the pipe-
line with suitable end plugs. Alternative-
ly, install a shut-off valve in the control
line.
Make sure that the pressure rises simulta-
–
neously upstream and downstream of the
regulator to avoid damaging the balanc-
ing bellows.
Do not allow the pressure to exceed the
–
1.5 times the nominal pressure of the
valve body.
EB 2517 EN
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