• Design
  • Mechanical
  • Fluid
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  • Category Tags
Design
Brand
Imo
Product Type
Pumps > Three-screw
Related Industries
General Industry
Mechanical
Pressure Differential
Maximum: 100bar-d
Pressure Inlet
Maximum: 5bar-d
Pressure Discharge
Maximum: 1500bar-d
Driver
Magnetic
Fluid
Fluid Temperature Range
Maximum: 250°F
Flow
Maximum: 400ft³/h
Viscosity
4mm²/s to 5400mm²/s
Manufacturing
Mounting
Pedestal
Construction Features
Bearing
Categegory Tags
Design Types
base plate
Installation
horizontal, vertical, dry, in-tank

Product Description

Three-Screw pump Single Suction up to 100 bar

Series 6D Imo pumps are intended for relatively high pressure service on petroleum or similar viscosity liquids.

Series 6D is a medium pressure pump line finding extensive use on fuel oil burners, high pressure trunion lubrication for ball mills, crude oil pipeline service and non-cyclic hydraulic applications.

6D

SERIES

Nominal flow rate, GPM/LPM, at 1500 PSI (103 BAR), 200 SSU (43 CST)
SPEED RPM
Size35002900175014501150960
10612/449/34----
11817/6513/506/23---
13728/10622/8310/387/26--
15642/16033/12516/6112/45--
18776/28760/22731/11724/9116/61-
218123/46699/37552/19740/15128/10620/76
250187/708151/57282/31064/24245/17034/129
275-207/783114/43190/34166/25051/193
312P--135/511107/40579/29961/231
312--174/659138/522103/39081/307
350--251/950201/761151/572120/454
400P--303/1147244/924184/696147/556
400--385/1457311/1177237/897190/719

Series 6D Specifications

Casing- High shock capacity ductile (nodular) iron. Consult Imo for steel case availability.

Rotor Housing- Pearlitic gray iron for rotor sizes 106 through 187; bronze sizes 218 and larger.

Power Rotor- Alloy steel, nitride hardened and thread ground

Idler Rotors- Pearlitic gray iron, induction hardened and thread ground for sizes 106 through 187; alloy steel, nitride hardened and thread ground

Gaskets- Cellulose and non-asbestos fiber

Seal & Bearing- Type B: Buna N bellows mechanical seal, Buna N o-rings and standard external, permanently grease packed, deep groove ball bearing- recommended for distillate fuels and lubricating oil or hydraulic fluids. Type H: Positive drive mechanical seal, fluoroelastomer o-rings and external high temperature, permanently grease packed, deep groove ball bearing.

Accessories- Completely mounted, built to order pump/driver assemblies are available with baseplates, ANSI RF spool pieces, NEMA 'C' face adapters.

Outlet Pressure- 1500 PSIG (103 BAR) maximum for lube, seal and hydraulic oils. 1000 PSIG (70 BAR) maximum for distillate, residual and crude oils. Minimum recommended differential pressure is 40 PSI (2.8 BAR).

Inlet Pressure- Type B & H: 75 PSIG (5 BAR) maximum, distillate fuel, lube- sizes 106-187. 50 PSIG (3 BAR) maximum, distillate fuel, lube- sizes 218-400. Type H: 40 PSIG (2.7 BAR) maximum, residuals and crude oil- all sizes.

Viscosity- 33 SSU (2.0 CST) minimum. Type B: 3000 SSU (650 CST) maximum (consider cold start). Type H: Viscosities above 3000 SSU (650 CST)

Temperature- Type B: 0 to180°F (-18 to 82°C). Type H, sizes 106-187: 0 to 250°F (-18 to 121°C) for <1800 RPM, 0 to 225°F (-18 to 107°C) for > 1800 RPM. Sizes 218 and up: 0 to 200°F (-18 to 93°C).

Drive- Direct only. Magnetic Drive configurations also available.

Rotation- Clockwise facing pump shaft .

Mounting- May be foot mounted in any orientation. Flange mounting optional for certain applications.

Filtration- Inlet strainers are required to keep contaminants and abrasives out of the pump. They must be selected in consultation with the strainer vendor to prevent pump starvation. Normally, 60 mesh (0.01 inch- 238 micron) for light and 1/8-3/16 inch (3-5mm) openings for heavy oils are recommended.

Maximum RPM*

Size:106118137156187218250275312P312350400P400
RPM5400540044004400440036003600300025002500250025002500

* Assumes minimum inlet pressure requirements are met.

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