Flowserve BB 1 Manual de usuario Pagina 15

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Dual-plate check valves BB... do not require special preparations prior to their commissioning. If
the springs or O-rings of the dual-plate check valves BB 1... have been replaced check plugs
A for
positive sealing and, if necessary, retighten them. Please refer to pages 21 to 23 for information on
torques.
If the dual-plate check valves BB... have not been properly positioned in the pipework or are fitted with
unsuitable springs the consequent vibrations and clattering of the plates will give rise to loud noises.
In this case either increase the capacity of the pump or replace the springs by suitable ones. Please
observe the installlation notes.
Do not attach objects to or tread on the damping cylinders M of the dual-plate check valves BB with
dampers.
Operation
BB 1..., BB 2...
BB 1..., BB 2...
Commissioning
If the dual-plate check valves BB... have not been properly positioned in the pipework or are fitted with
unsuitable springs the consequent vibrations and clattering of the plates will give rise to loud noises.
In this case either increase the capacity of the pump or replace the springs by suitable ones. Please
observe the installation notes.
Do not attach objects to or tread on the damping cylinders M of the dual-plate check valves BB with
dampers.
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