Annovi Reverberi AR50-GR1-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.

GR1-GCI version gearbox AR1639 with 1" Hollow Shaft and GI40 Control Unit

  • Parts in contact with pumped liquids in Rilsan-coated aluminium, and AISI 303/304
  • Diaphragms in NBR
  • Seals in NBR
  • Die-cast casing with oil-immersed mechanism and clear plastic tank for visual level checking
  • Fitted with air-hydraulic damper for smoother operation and less hammer effect in the delivery circuit
  • Oil drainage stopper
  • 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
  • Mass-produced safety valve and cardan protection
  • Metal fasteners with galvanised finish
  • Available with reduction gearboxes for electric motors or internal combustion engines and flanges for hydraulic motors, overgears or small cultivating machines.

Diaphragm Kits:
AR43293 - Blueflex
AR43291 - Desmopan
AR43290 - Buna

Valve Kits:
AR1920 - Valves

O-Ring Kits:
AR1919 - O-Rings

AR64516 - Oil

Manual Breakdown


Max GPM 14.8
Max L/Min 65.8
Max PSI 580
MaxBar 40
Inlet 1 1/4"
Outlet 1/2" NPT
Max Temp 140°F
HP 5.2
Weight 50.0
RPM 550

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