Common on recips — pulsation fatigues welds, gauges and fittings.
1
Discharge pulsation with no dampening volume
medReciprocating
CheckObserve pipe movement while running; look for cracked welds, work-hardened copper and repeated fitting leaks.
FixAdd a pulsation bottle or receiver close to the discharge; avoid rigid runs between pump and tank.
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2
Unsupported or badly clamped pipework
lowCheckCheck pipe support spacing and whether clamps are tight but able to allow thermal movement.
FixAdd supports at OEM spacing; use isolating clamps, not hard-welded restraints, near the machine.
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3
Rigid connection transmitting machine vibration
medCheckInspect the discharge connection for a flexible section.
FixFit a properly rated flexible connector or braided hose at the discharge.
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4
Failed or missing isolation mounts
medCheckInspect anti-vibration mounts for collapse, cracking and missing hardware; check base bolt torque.
FixReplace mounts as a set; re-shim and torque the base.
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Safety
Lockout/tagout before opening enclosures. Verify zero energy. Bleed system pressure before opening any pneumatic connection.