Pulsation Troubleshooting

Cause
Debris and contamination build-up on valve seat surfaces can disrupt the normal flow through the inlet and discharge valves. Debris in either of these valves can allow the water to free flow in and out of that valve chamber and not be properly discharged from the pump. This situation causes irregular flow patterns through the valve chambers, resulting in flow ripple or pulsation.

Solution
Remove each valve or valve stack and inspect. Clean or replace as required. Maintain proper system filtration.

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Cause
A pulsation dampener reduces fluctuations in system pressure due to the reciprocating action of the pump plungers or pistons. Most systems tolerate pressure pulsation without any issues, such as pressure washers. A pulsation dampener is commonly referred to as an “accumulator.”  Dampeners may be charged with a gas (such as nitrogen) or spring-loaded. Gas-charged dampeners use a bladder that responds to pressure fluctuations, absorbing pressure spikes.

Solution
Should system pulsation become pronounced, install a dampener. If a pulsation dampener is in use and pulsation is an issue, inspect bladder for rupture, check the dampener’s charge pressure and recharge to factory settings or replace the unit entirely. 

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