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AR40-SP Diaphragm Pump (Hollow Shaft)


Available for Purchase!

SKU: AR40-SP Categories: ,


AR40-SP / HYPRO D40 (Hollow Shaft) Medium Pressure Diaphragm Pump

Call for Special Pricing – 561-964-3228!

550 RPM – Semi-Hydraulic Two Diaphragm Pump – with Hollow Shaft. See AR40-SP/A3/4 for 3/4 inch Solid Shaft!

This ‘-SP’ version does not come with Gearbox or Control Unit. This is a bare pump which will need a Control Unit to operate.
SP – Single hollow shaft with 3 or 6 threaded holes or, in other models cylindrical & key shaft

This pump supersedes Hypro D40 Pump


140 degrees Fahrenheit – Max Water Temp | 1-1/4 inch Suction | 1/2 inch – Outlet | Hollow Shaft

  • Alternating volumetric pumps with two semi-hydraulic diaphragms for use in the gardening or semi-professional agricultural sectors, 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
  • 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
  • NOTE! This has a Hollow Shaft! See AR40-SP/A3/4 for 3/4 inch Solid Shaft!


Max GPM 12.2
Max L/Min 46.3
Max PSI 580
MaxBar 40
Outlet 1/2 inch NPT
Max Temp 140 degrees Fahrenheit
HP 3.5
Weight 20.5
Suction 1 inch
Pressure Medium
Shaft Hollow



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Prop 65 Warning!

This product can expose you to chemicals which are known to the State of California to cause cancer.