Annovi Reverberi AR503-GR3/4-GCI 550 RPM semi-hydraulic two diaphragm alternating volumetric pump for use in gardening or semi-professional agricultural sector, trolley-mounted in combination with electric motors or internal combustion engines for gardening, and small sprayers for medium-pressure pesticide treatments in gardens, greenhouses, orchards or vineyards.

GR3/4-GCI Gear Reduction AR1639 with 1" Hollow Shaft, RM40 Control Unit and 1" Solid Keyed Thru Shaft

  • Parts in contact with pumped liquids in plastic-coated aluminium and body in aluminium
  • Diaphragms in NBR, Desmopan or Viton
  • Seals in NBR or Viton
  • Die-cast casing with oil-immersed mechanism and clear plastic tank for visual level checking
  • Pistons with ring for a more efficient “oil cushion” system to protect the diaphragm
  • New-design diaphragm cut-out system to prevent contact tearing even in heavy-duty operating conditions
  • Spherical sector profile valves for lower flow resistance and improved volumetric efficiency

Diaphragm Kits:
AR43297 - Blueflex
AR43295 - Desmopan
AR43294 - NBR

Valve Kits:
AR1987 - Valves

O-Ring Kits:
AR1984 - O-Rings

AR64516 - Oil



Max GPM 14.3
Max L/Min 54.1
Max PSI 580
MaxBar 40
Inlet 1 1/4"
Outlet 3/4" NPT
Max Temp 140°F
HP 5.6
Weight 41.0
RPM 550

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