Graco Fire-Ball 300 air-operated piston grease pump, model 239877, 50:1 ratio, 35 or 70 lb (16 or 32 kg) pail length. Double-acting pump driven by a 3 in. (76 mm) differential air motor for grease dispense from 35 or 70 lb pails. Maximum fluid working pressure 8400 psi (58 MPa, 580 bar).
| Brand | Graco |
| Range | Fire-Ball 300 (air-operated piston grease pump) |
| Model number | 239877 |
| Pump ratio | 50:1 |
| Container size | 35 or 70 lb (16 or 32 kg) pail length |
| Maximum fluid working pressure | 8400 psi (58 MPa, 580 bar) |
| Maximum air input pressure | 140 psi (0.97 MPa, 9.7 bar) |
| Air pressure operating range | 30-140 psi (0.3-0.97 MPa, 3-9.7 bar) |
| Air motor effective diameter | 3.0 in (76 mm) |
| Maximum delivery | 0.22 gpm (0.82 lpm) at 76 cycles/min |
| Maximum cycle rate | 76 cycles/min (continuous and intermittent) |
| Maximum air consumption | 22.8 scfm |
| Type | pneumatic piston pump |
| Wetted parts | steel, brass, aluminium, acetal, nitrile rubber, polyurethane |
| Air inlet size | 3/8 in npt(f) |
| Weight | 22 lb (10 kg) |
| Sound pressure level | 77.8 dB(A); sound power level: 85.6 dB(A) |
| Material | Steel, brass, aluminium, acetal, nitrile rubber, polyurethane (wetted parts) |
| Pressure rating | 8400 psi (58 MPa, 580 bar) |
| MOQ | 1 |
Fire-Ball 300 50:1 series; the 120 lb version is model 239887 and the 400 lb drum-length version model 239888. The 239877 fits 35 or 70 lb (16/32 kg) grease pails.