Datasheet summary

Omega

PDF datasheet mirror for Omega (KSB Pumps). Verify with OEM before design.

Summary

Product Identification

The KSB Omega / Omega V is an axially split volute casing pump.

Designation Key Example: Omega V 150 - 460 A GB P M

Omega: Type series
V: Design (Horizontal installation if blank, V for Vertical installation)
150: Nominal discharge nozzle diameter [mm]
460: Nominal impeller diameter [mm]
A: Impeller type
GB: Material variant (e.g., Grey cast iron / bronze)
P: Shaft seal (P for Gland packing, G for Mechanical seal)
M: Bearing lubrication (F for Grease, M for Fluid handled)

Main Applications

Waterworks
Desalination plants
Pressure boosting
Water transport
Service water and cooling water for power stations and industry
Irrigation pumping stations
Drainage pumping stations
Fire-fighting systems
Shipbuilding
District heating systems and district cooling systems

Fluids Handled

OMEGA / OMEGA V pumps are designed for pumping water and other fluids with a low solids content, including:

Brackish water
River water, lake water and groundwater
Stormwater
Service water
Fire-fighting water
Cooling water
Condensate
Heating water
Drinking water

Operating Limits

Size (Nominal Discharge Nozzle Diameter):
- DN: 80-400 mm
- DN: 3-15 ″
Flow Rate (Q):
- ≤ 4400 m³/h
- ≤ 19375 US.gpm
Head (H):
- ≤ 210 m
- ≤ 689 ft
Operating Pressure (p):
- ≤ 25 bar
- ≤ 363 psi
Fluid Temperature (T):
- 0 to 140 °C
- 32 to 284 °F
- Standard design up to 80 °C [176 °F] max.
Max. Permissible Solids Content:
- With barrier and flushing water line without cyclone separator:
  - Gland packing: 50 ppm (mg/l)
  - Unbalanced mechanical seal: 50 ppm (mg/l)
  - Balanced mechanical seal: 50 ppm (mg/l)
- With barrier and flushing water line with cyclone separator:
  - Gland packing: 100 ppm (mg/l)
  - Unbalanced mechanical seal: 100 ppm (mg/l)
  - Balanced mechanical seal: 100 ppm (mg/l)
- Higher solids contents available on request.

Mechanical / Hydraulic Design

Design:
- Volute casing pump
- Horizontal installation / vertical installation
- Single-stage
- Nominal discharge nozzle diameter: 80 mm - 400 mm
Pump Casing:
- Axially split volute casing
- Volute casing with integrally cast pump feet
- Replaceable casing wear rings
- Mating dimensions to EN or ASME
Impeller Type:
- Double-entry radial impeller
- Optionally with impeller wear rings
Pump Shaft:
- Completely dry shaft
- Shaft protecting sleeves in the seal area
Direction of Rotation:
- "Left" (anti-clockwise) or "Right" (clockwise) when looking at the shaft stub.
- Pumps are designed symmetrically; direction can be reversed later without modification.

Materials of Construction

The Omega / Omega V pumps are available in various material variants for standard and hot water applications.

Standard Design Material Variants (max. fluid temperatures ≤ 80 °C [176 °F]):

GB: Grey cast iron / bronze
GC: Grey cast iron / chrome steel
SB: Nodular cast iron / bronze
SC: Nodular cast iron / chrome steel
DD35: Duplex stainless steel / duplex stainless steel

Hot Water Variant Material Variants:

GC: Grey cast iron / chrome steel (Max. fluid temperature 120 °C [248 °F])
SC: Nodular cast iron / chrome steel (Max. fluid temperature 140 °C [284 °F])

For detailed part-specific material compositions (e.g., volute casing, impeller, shaft, bearings, seals), please refer to the official PDF datasheet.

Coating and Preservation

Pumps are available with different coating types for indoor and outdoor installation, in various RAL colors.

Indoor Installation Coating Types (for fluid temperatures ≤ 80 °C [176 °F]):

A1, A1-E1: Epoxy resin base paint, colour RAL 5002 (ultramarine blue) for exterior, bearing housing, and base frame. Interior can be epoxy resin base primer (A1) or epoxy resin base paint RAL 5015 (sky blue) (A1-E1).
B1-E1: Epoxy resin base paint, colour RAL 5002 (ultramarine blue) for exterior, bearing housing, and base frame. Interior is sand-blasted SA 2 ½.

Outdoor Installation Coating Types:

A2, A2-E1: Polyurethane base paint, colour RAL 5002 (ultramarine blue) for exterior, bearing housing, and base frame. Interior can be epoxy resin base primer (A2) or epoxy resin base paint RAL 5015 (sky blue) (A2-E1).
B2-E1: Polyurethane base paint, colour RAL 5002 (ultramarine blue) for exterior, bearing housing, and base frame. Interior is sand-blasted SA 2 ½.

A1-E1 and A2-E1 with RAL 5015 (sky blue) interior are approved for drinking water (KTW, DVGW, ACS) up to 60 °C [140 °F] max. (drinking water up to 25 °C [77 °F] max.). For full details on coating specifications, including special colors and customized systems, please refer to the official PDF datasheet.

Shaft Seals

Gland packing
Mechanical seal (single, unbalanced, or balanced)

Bearings

For horizontal installation (Omega): Grease-packed rolling element bearings sealed for life.
For vertical installation (Omega V): Product-lubricated plain bearing at the bottom, and rolling element bearings greased for life on top.
Generously sized bearings (Lh10 = 100,000 hours).

Installation Types

The pumps can be supplied in various configurations:

Fig. 0: Bare-shaft pump (without installation parts)
3E: Pump and motor on a common base frame
DB/DK: Motor mounted on the drive lantern
DJ: Pump and motor on separate levels (using cardan shaft or coupling with spacer)
DP: Motor mounted on separate drive lantern

Acceptance Tests and Inspections

Available acceptance tests and inspections include:

Hydraulic acceptance tests to KSB standard DIN ISO 9906 - 2B, 1B, 1U (equivalent to ANSI HI 14.6-2011/2B, 1B, 1U or Hydraulic Institute A)
NPSH test (to DIN ISO 9906 or Hydraulic Institute)
Sound measurement
Vibration test
Bearing temperature measurement
Visual inspection after test run (strip test)
Hydrostatic test
Impeller balancing test (to DIN ISO 1940-1 (G6.3) for hot water variant)
Coating inspection
Dimensional inspection

Both non-witnessed and witnessed tests are available for most items. Refer to the official PDF for full details on standard and optional tests.

Scope of Supply

Omega (standard design):

Bare shaft pump (without accessories)
Casing wear rings
Shaft sealed by gland packing
Grease-packed rolling element bearings
Barrier fluid line / flushing water line made of flexible material, without cyclone separator
Installation/operating manual

Omega V (standard design):

Bare shaft pump (without accessories, with pump foundation)
Casing wear rings
Shaft sealed by gland packing
One grease-lubricated and one product-lubricated bearing
Barrier fluid line / flushing water line made of flexible material, without cyclone separator
KSB standard coating for indoor installation
Installation/operating manual

Components for completing the pump set (optional):

Baseplate / base frame for pump and motor (for horizontal installation)
Drive lantern stool and foot (for vertical installation)
Drive (motor)
Coupling
Coupling guard

Accessories (optional):

Barrier fluid line / flushing water line with cyclone separator
Vent valves and/or drain valves
Pressure gauges
Temperature sensor for rolling element bearings (Pt100)
Limit switch or transmitter for Pt100
PumpMeter
SPM nipple or vibration monitoring device

Specifications for Enquiries/Orders

To ensure correct pump selection, the following information is required for enquiries/orders:

Pump:

Pump designation
Maximum and minimum inlet pressure
Flow rate Q, head Htotal
Flange design
Shaft seal
Type of fluid handled and fluid temperature
Solids content
Direction of rotation / motor position
Accessories required
Special inspections and acceptance tests
Quantity and language of operating manuals

Drive (selected by KSB):

Type of construction
Enclosure
Voltage, frequency, starting method
Ambient temperature
Thermal class
Accessories required

Drive (selected by customer):

Binding data sheet with motor dimensions and effective speed

Official datasheet (PDF)

Lenntech datasheet mirror

Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.