Product Detail

3G

Quick Overview

THREE SCREW PUMP

Rated Flow: 5 to 160 gpm (19 to 606 l/min)
Max Inlet Pressure: 50 PSIG (3.4 bar)
Max Outlet Pressure: 300 PSIG (20.7 bar)

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.

Size 95 1.2D 1.6D 2.0D
Rated Flow at 3500 RPM, Δ 150 psi/ 10 bar, 200 SSU 5 gpm 19 l/min 8 gpm 30 l/min 10 gpm 38 l/min
Max Inlet Pressure 50 psig 3.4 bar 50 psig 3.4 bar 50 psig 3.4 bar
Max Outlet Pressure 300 psig 20.7 bar 300 psig 20.7 bar 300 psig 20.7 bar
Max Speed 5000 RPM 5000 RPM 5000 RPM
Size 118 1.6D 2.0D
Rated Flow at 3500 RPM, Δ 150 psi/ 10 bar, 200 SSU 17 gpm 64 l/min 20 gpm 76 l/min
Max Inlet Pressure 50 psig 3.4 bar 50 psig 3.4 bar
Max Outlet Pressure 300 psig 20.7 bar 300 psig 20.7 bar
Max Speed 4000 RPM 4000 RPM
Size 143 1.5D 1.7D 2.0D
Rated Flow at 3500 RPM, Δ 150 psi/ 10 bar, 200 SSU 27 gpm 102 l/min 30 gpm 114 l/min 38 gpm 144 l/min
Max Inlet Pressure 50 psig 3.4 bar 50 psig 3.4 bar 50 psig 3.4 bar
Max Outlet Pressure 300 psig 20.7 bar 300 psig 20.7 bar 300 psig 20.7 bar
Max Speed 4000 RPM 4000 RPM 4000 RPM
Size 162 1.6D 2.0D
Rated Flow at 3500 RPM, Δ 150 psi/ 10 bar, 200 SSU 42 gpm 159 l/min 52 gpm 197 l/min
Max Inlet Pressure 50 psig 3.4 bar 50 psig 3.4 bar
Max Outlet Pressure 300 psig 20.7 bar 300 psig 20.7 bar
Max Speed 4000 RPM 4000 RPM
Size 187 1.45D 1.75D 2.0D
Rated Flow at 3500 RPM, Δ 150 psi/ 10 bar, 200 SSU 59 gpm 223 l/min 72 gpm 273 l/min 82 gpm 310 l/min
Max Inlet Pressure 50 psig 3.4 bar 50 psig 3.4 bar 50 psig 3.4 bar
Max Outlet Pressure 300 psig 20.7 bar 300 psig 20.7 bar 300 psig 20.7 bar
Max Speed 4000 RPM 4000 RPM 4000 RPM
Size 200 2.0D
Rated Flow at 3500 RPM, Δ 150 psi/ 10 bar, 200 SSU 101 gpm 382 l/min
Max Inlet Pressure 50 psig 3.4 bar
Max Outlet Pressure 300 psig 20.7 bar
Max Speed 4000 RPM
Size 250 1.3D 1.6D
Rated Flow at 3500 RPM, Δ 150 psi/ 10 bar, 200 SSU 130 gpm 492 l/min 160 gpm 606 l/min
Max Inlet Pressure 50 psig 3.4 bar 50 psig 3.4 bar
Max Outlet Pressure 300 psig 20.7 bar 300 psig 20.7 bar
Max Speed 4000 RPM 4000 RPM

Product Specifications