AR503-GR3/4-GCI Diaphragm Pump
The AR503-GR3/4-GCI is a medium pressure, three diaphragm pump assembly that is popular in the lawn care industry.
GR3/4-GCI version Gear Reduction AR1636 with 3/4" 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-GR3/4GCI is a direct replacement for the Hypro D503.
The GRGI model allows the D503 to be connected to a 4-6.5 HP gas engine with a 3/4" 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-GR3/4-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
