AR503-GR1-GCI Diaphragm Pump

The AR503-GR1-GCI is a medium pressure, three diaphragm pump assembly that is popular in the lawn care industry.  GR1-GCI version Gear Reduction AR1639 with 1" Hollow Shaft and RM40 Control Unit Parts in contact with pumped liquids in plastic-coated aluminum and body in aluminum 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 The AR503-GR1-GCI is a direct replacement for the Hypro D503.  The GRGI model allows the D503 to be connected to a 8-13 HP gas engine with a 1" shaft. **This item ships direct from the manufacture. Please allow 24-48 hours for shipping.  Common replacement parts include: Diaphragm Kits: AR43297 - Blueflex AR43295 - Desmopan AR43294 - NBR Valve Kits: AR1987 - Valves O-Ring Kits: AR1984 - O-Rings Oil: AR64532 - Oil AR503 Manual   AR503-GR1-GCI Specifications: Max GPM: 14.3 GPM Max PSI: 580 PSI Max RPM: 3600 RPM Max Fluid Temp.: 140 F Diaphragm Material: BlueFlex Inlet Barb: 1 1/4" Outlet: (2) 1/2" & (1) 3/4" bypass Weight: 42 Lbs Oil Capacity: 32 oz