The AR40-SP/A3/4 diaphragm pump is widely used in the commercial, industrial and agricultural sprayer industries. With a flow rate up to 12.2 gpm and max pressure of 580 psi it is optimal for small or medium-sized sprayers, assisting in the targeted distribution of your liquid product onto desired surfaces for consistent, even coverage every time. This model is equipped with a flange on one end to attach gearbox or shaft kit and a 3/4" keyed shaft on the other.

Annovi Reverberi AR40-SP/A3/4 550 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.

Example Uses: Lawn Care, Pest Control & Turf Spraying

SP version flanged shaft for shaft kits. See page 3 of manual for drive options. 

• 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

Download Product Manual

• Max flow: 12.2 gpm
• Max pressure: 580 psi
• Shaft: Flange to attach gearbox or shaft kit on one end and 3/4" keyed shaft on the other
• Port sizes: 1-1/4" HB inlet, 1/2" NPT outlet
• Pump shaft rotation: CW and CCW
• Diaphragms: 2, semi-hydraulic, BlueFlex material
• Housing: Anodized aluminum
• Head & Manifold material: Plastic coated aluminum
• Recommended control unit: GI40 (9910GS40GI) 
• Recommended gearbox: AR1636 (9910KIT1640) with 3/4" hollow shaft to mount on 5 to 6.5 hp engines
• Max fluid temperature: 140°F
• Weight: 20.5 lbs