Edition 7-1 - 0
1
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8
Problem
Possible cause
Remedial action
Desired flow volume is not reached
Operational data have been changed
Check design and/or operational data; if
required, change resistance in valve by
using other internals.
Dimensions of multiple-orifice or slotted
cylinders too small.
Multiple-orifice or slotted cylinders
optionally are clotted.
Flush valve; if required, disassemble valve
and remove foreign object
Flow volume too high
Operational data have been changed
Check design and/or operational data; if
required, change resistance in valve by
using other internals.
Dimensions of multiple-orifice or slotted
cylinders to large
Desired back pressure too high
Operational data have been changed
Check design and/or operational data; if
required, change resistance in valve by
using other internals.
Dimensions of multiple-orifice or slotted
cylinders to large
Cavitation in valve
Valve operating beyond the design limits
Check design and/or operational data; if
required, change resistance in valve by
using other internals.
Operational data have been changed
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