Cast Iron Gear Pumps – Group 4 – Series W4

Main features

The W4 series of pumps and motors has been designed with a two-piece cast iron construction.

This structure guarantees the product greater rigidity and compact dimensions.

High volumetric yields thanks to axial compensation.

Technical Sheet

  • Cast iron covers and body for high performances
  • High pressure option: up to 270 bar max.
  • Continuous pressure (3920 psi).
  • Axial compensation achieved using pressure balanced bushing blocks.
  • High volumetric efficiency: average 95-97%
  • Wide range of capacities: 75-90-110-130-150 cm3/rev.
  • Gear tooth profile accurately projected providing low noise operation.
  • A wide variety of shafts, flanges and ports are available to meet specific application requirements.
  • High-temperature seals available.
  • Single rotational pumps and motors.
  • Bi-rotational pumps and motors.
  • Multiple pumps availability: tandem pumps are possible both in aluminium series and with other cast iron series produced by Ronzio Oleodinamica.
  • Easy-to-make tandem pumps and easy change of rotation.