Graco Inc.

President 20:1  Priming Piston Pump

Priming piston ink pump with higher pump pressures and flow rates

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With higher pump pressures and flow rates, Graco priming piston pumps handle a broad range of inks with ease. They offer durability, power and reliability in many ink manufacturing or printing applications.

  • Produces up to 2000 psi (137 bar) when mounted on a 450 pump
  • Positive displacement, priming piston design provides uniform and easily-controlled delivery
  • Evacuates with pails, drums and bins with ease
  • Extremely durable pump with long-life packing design, and low maintenance

View values in metric units. View values in U.S. units.

Check-Mate 450 Pumps
Ratio
20:1
20:1
Maximum fluid working pressure
3600 psi)
25 MPa, 248 bar
Maximum air input pressure
180 psi
1.2 MPa, 12 bar
Pump cycles per 3.8 liters (1 gal.)
48
48
Fluid flow at 60 cycles/min
4.5 liters/min (1.2 gpm)
4.5 liters/min (1.2 gpm)
Air motor effective diameter
4.25 in.
108 mm
Stroke length
4.0 in.
102 mm
Displacement pump effective area
0.697 in.²
4.5 cm²
Maximum pump operating temperature
180°F
82°C
Weight
50 lb
22.7 kg
Wetted parts
Carbon Steel; E52100, 41L40, and 4140 Alloy Steel; 304, 316 and 17-4 PH Grades of Stainless Steel; Ductile Iron; Zinc and Nickel Plating; PTFE; Acetal; Ultra-High Molecular Weight Polyethylene (not used on Displacement Pump 235540)
Carbon Steel; E52100, 41L40, and 4140 Alloy Steel; 304, 316 and 17-4 PH Grades of Stainless Steel; Ductile Iron; Zinc and Nickel Plating; PTFE; Acetal; Ultra-High Molecular Weight Polyethylene (not used on Displacement Pump 235540)