Samson 3595, Mounting And Operating Instructions

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8-2 EB 8079 EN
Malfunctions
Malfunction Possible reasons Recommended action
Increased flow through
closed valve (seat
leakage)
Dirt or other foreign
particles deposited
between the seat and
plug.
Shut off the section of the pipeline and flush the
valve.
Faces on the seat ring
and plug are slightly
uneven.
See 'Lapping the seat and plug' in the 'Servicing'
section.
Valve trim is worn out. Contact our after-sales service.
Gasket underneath the
seat ring is worn out.
See 'Replacing the gaskets' in the 'Servicing'
section.
Gasket at the cage is
worn out.
See 'Replacing the gaskets' in the 'Servicing'
section.
The valve leaks to the
atmosphere (fugitive
emissions).
Defective packing See 'Replacing the packing' in the 'Servicing'
section.
Version with adjustable
packing: packing not
tightened correctly
Adjust the packing (see information under
'Adjusting the packing' in the 'Testing the installed
valve' section). Contact our after-sales service when
it continues to leak.
Version with bellows
seal: the bellows seal is
defective.
See 'Replacing the bellows seal' in the 'Servicing'
section.
Flange joint loose or
gasket worn out
Check the flange joint.
See 'Replacing the gaskets' in the 'Servicing'
section.
Contact our after-sales service for malfunctions not listed in the table.
Note