Rotary Piston Pumps

Ampco Rotary Piston Pumps

The ZP Series is Ampco’s newest line of rotary piston positive displacement pumps. ZP1 and ZP2 pumps are interchangeable with Waukesha UI and UII pumps, and many common upgrades are included in standard models.
The most significant improvement is a 304 stainless steel gear case on every pump, which eliminates rusting, chipping, and peeling.


  • Stainless steel gear case and retainers
  • 17-4ph shafts
  • Helical gears
  • 4-way mounting
  • 2-side threaded grease zerks
  • Anti-microbial lubricant
  • 6 oil fill plugs with sight glass
  • Gasketed clean-out plugs

Ampco Pumps Company has raised the bar with the introduction of the ZP3 Series of positive displacement pumps. The recently patented front-loading seal design of the ZP3 offers a fully CIP’able pump without modifications or loss of efficiency. The front-loading design allows the seal to be easily maintained or changed, and the newly designed rotor case eliminates all dead zones.