Annovi Reverberi AR503-GR3/4-GCI is a 580 RPM semi-hydraulic three diaphragm pump for use in gardening, lawncare  or semi-professional agricultural sector for small sprayers for medium-pressure fertilizer / pesticide treatments in gardens, greenhouses, orchards or vineyards. 5.6 bhp, Maximum 14.3 GPM and 580 PSI. 1-1/4″ Suction x 3/4 NPT Discharge.  41 Lbs Pump comes with 3/4 hollowshaft gear reduction unit and control valve for connection to 3/4″ shaft engines.

Alternate Version:

 -SP Version – (replacement) Pump only, Less gear reduction unit

GR1-GC Version -1″ hollowshaft Gear Box Drive with Control Valve for connecting to an 1″ shaft gas engine

• Pump body and parts in contact with pumped liquids in plastic-coated aluminum
• Diaphragms available in Nitrile Buna Rubber, 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

Please call for current price & availability

NOTE: The Annovi Reverberi AR503 is a replacement for the discontinued Hypro D503 Diaphragm Pump.