Ulka Type EP5. 120 V/60 Hz, 41 W.
This Ulka brand vibratory pump is used in many various home espresso machines (current model Rancilio Silvia) and in some rare cases, commercial machines.
Rancilio part number 34011023.
1/8" BSP F x 7mm Barb fittingsOverall length: 122mm (4-13/16")
Mounting foot distance at center: 91mm (3-9/16")
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.