Fire-Ball 425 Grease Pump (50:1)
50:1 Air-Operated Piston Grease Pump
The pump of choice for your most demanding high volume applications pumping grease.

The Fire-Ball 425 is perfect for high pressure grease dispense in high volume and longer distance applications such as truck shop service fleet facilities and in-plant applications.

• Corrosion-resistant design utilizes liquid salt nitriding, nickel plating, stainless steel, aluminum and chrome on key components for longer life.
• Few moving parts in the air motor assembly means less downtime and low repair cost
• Displacement rods have minimal wear due to a proprietary Graco manufacturing process
• Large air porting design provides efficient use of compressed air supply for continuous pump operation without icing
• Available in 10:1, 50:1 or 75:1 ratios
• NLGI #00 lubricating grease
• NLGI #0 lubricating grease
• NLGI #1 lubricating grease
• NLGI #2 lubricating grease
• High-pressure grease dispense

Specifications

• Ratio: 50:1
• Dispense Points: 4 or more
• 115 Cycles/Pound (33.4 cycles/kilogram)
• 119.0 Cycles/Gallon (72.5 cycles/liter)
• Air Motor Effective Diameter 4.25 in (107.9 mm)
• Air Operating Range 40–150 psi (2.8–12 bar, 0.3–1.2 MPa)
• Maximum Fluid Pressure 7500 psi (517 bar, 51.7 MPa)
• Wetted Materials Steel, Brass. Aluminum, Leather
• Approximate Air Consumption (scfm, m3/min) 19 (0.54) @ 1 gpm (7.3 lb/min – .45 kg/min) @ 70 psi (4.8 bar, 0.5 MPa) air pressure
• Air Inlet Port Size, npt(f) 1/2"
• Fluid Outlet Port Size, npt(f) 3/8"
• Sound Pressure, measured at 1 meter from unit (dB) 80.85
• Sound Power, tested in accordance with ISO 9614-2 (dB) 94.62
• Annual Grease Usage 10,000 lb or more (4,535 kg)