To test a pulsation dampener after maintenance, isolate and depressurize the system, inspect the unit, verify the gas precharge against the manufacturer's specification, leak-test the gas and fluid sides, then run the pump and measure pressure fluctuation with and without the dampener in service. If precharge holds, there are no leaks, and the pressure ripple falls within your target range, the unit is ready to return to service. Pulsation dampeners protect pumps, piping, instruments, and downstream components from the pressure spikes and flow surges created by reciprocating pumps. After a bladder replacement, recharge, seal change, or any other service, a dampener that looks fine can still perform badly. A wrong precharge, a pinched bladder, or a slow gas leak can leave the system exposed to the very pulsation the dampener was installed to control. A structured post-maintenance test confirms the repair worked before the unit goes back into production.
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