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Vibration Pump
Compact, inexpensive electromagnetic pump that pulses water at 50 Hz — standard on home and entry-level machines.
Category: Pumps & Pressure
A solenoid-driven pump using a magnetically actuated piston that vibrates 50–60 times per second to move water. Compact, inexpensive, and the standard pump in entry- to mid-level home espresso machines.
Why it matters — Vibration pumps deliver real espresso pressure (9 bar) in a small footprint and at low cost — which is why they dominate home machines. The trade-off is noise (audible buzz) and shorter service life (3–7 years typical).
Good to know
- Common brand: Ulka (the standard in Italian home machines). Replacement is straightforward and inexpensive.
- Vibration pumps work fine but feel different from rotary pumps — pulsing flow vs smooth flow. Most users don't notice once dialled in.