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Pre-Fill Boosters

These units offer many more advantages than conventional boosters, while maintaining the same basic simplicity. The pre-fill booster has two automatic cycles. The first cycle pre-fills the work circuit using low pressure with a large reservoir to provide volume. The second cycle then automatically provides high pressure, as needed. These units also provide automatic bleeding of the work circuit. This self-bleeding feature negates the need to “bleed the lines” after it is set up. The pre-fill booster is ideal for any general use production system requiring maximum efficiency with minimum effort! Pre-fill boosters must be used in the upright (vertical) position.

  • Self Bleeding
  • Easy View Reservoir
  • 15:1 and 30:1 Boost Ratios

Click the Part Number in below chart
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PartReservoirHigh PressureMinimumMaximumBoostMaximumRepair
NumberCapacity ( ( (psi)Input (psi)RatioOutput (psi)Kits
61704 CAD
507 1/24012515:11875
61705 CAD
503 3/44012530:13750
552407554:14100- - -

Unless otherwise stated, English units are inches (in) and pounds (lbs) and Metric units are millimeters (mm) and kilograms (kg).