Series 3G pumps are provided for differential pressures to 250 PSIG (17.2 Bar) and flow rates to 55 GPM (208 L/M).  Mountings include foot or flange.   Casing materials are either cast iron or steel.  These three screw pumps are used for distillate fuel oil transfer and burner services, machinery lubrication and other industrial pumping applications.  Most sizes are available with a tamper resistant built-in pressure relief valve for protection of the pump from momentary pressure overloads.

The 3G series pump is intended for use in lubrication, hydraulic and control oil services such as those
found on rotating machinery or other equipment needing forced lubrication, circulation, fluid transfer,
distillate fuel burner or similar systems. This series is available in seventeen displacements fitted into five
casing sizes. Pump casings are produced from cast iron with the option of cast steel.

All pumps are fitted with mechanical shaft seals. Inlet porting can be either radial (elbow), rotatable in 90o
increments, or axial. An internal tamper resistant relief valve is available as an option. Porting on the 95
through 162 rotor size pumps can be either SAE straight thread or SAE 4-bolt, Code 61, flange pad.
Porting on the 187 through 250 pumps is SAE 4-bolt, Code 61, flange pad.

Steel case pumps are equipped with SAE 4-bolt flange pads. An optional in-line relief valve is also
available. All SAE flange pads accept 4-bolt, O-ring sealed, Code 61 mating flanges of either socket weld
or FNPT style.

Both iron and steel pumps are designed for flange mounting and can be provided with mating foot brackets
or pump to motor (C-face) brackets. Flange or foot mounting on rotor sizes 95 through 162 and flange
mounting on rotor sizes 187 through 250 allows the pump outlet port to be directed radially in 90°
increments. Port options allow almost any global standard connection type. Units can also be supplied for
vertical tank mounting.