Centrifugal Pumps
SKWR Horizontal Hot Water Pump
Horizontal pump for pressurised hot water circulation to 120 degrees.
View specifications →Centrifugal Pumps
SKWS High Temperature Centrifugal Pump
When the circuit runs past the limit of a hot water pump, this is the horizontal model that carries a 240 degree fluid rating.
Overview
What This Pump Does
The SKWS is the high temperature build of the horizontal platform, published with a maximum permissible fluid temperature of 240 degrees Celsius for pressurised cyclic transport.
It keeps the hydraulics and the footprint of the rest of the SKW family, covering 1.5 to 1500 m3/h with heads to 150 m and drives to 160 kW, so a temperature upgrade does not force a change of pump size.
| Working Principle | Centrifugal |
|---|---|
| Main applications | Water |
| Driver | Electric motor |
| Power Specs | 380/415 V 220v,3phase;50hz/60hz |
| Max. permissible fluid temperature | 240°C |
| Type of connection | Flange |
Key Benefits
What Changes At 240 Degrees
240 Degree Fluid Rating
The highest published temperature in the centrifugal range, for pressurised circulation duty.
Same Hydraulic Platform
Flow, head and connection sizes match the rest of the SKW family, so pipework and duty points carry over.
Seal Arrangement For Heat
Hard alloy mechanical seal faces or a packing gland, specified against temperature and system pressure together.
Material Options
Cast iron, stainless steel or bronze wetted parts depending on the circuit fluid.
Application Scenarios
Where It Is Installed
High Temperature Process Circuits
Pressurised circulation above the range of a standard hot water pump.
Heat Recovery Loops
Circuits recovering heat from process streams where temperatures stay high continuously.
Industrial Heating Systems
Plant heating where the medium is water held above its atmospheric boiling point under pressure.
Who It Is For
- Process engineers specifying high temperature circulation
- Energy and heat recovery project contractors
- Plants running pressurised water above 120 degrees
- Maintenance teams replacing pumps that fail at temperature
Problems It Solves
Repeated seal failure on hot circuits
A pump rated for the actual circuit temperature stops the cycle of seal replacements that follows an undersized rating.
Pump size changes with temperature upgrade
Because the platform is shared, moving to the high temperature build does not change flow, head or connection sizes.
Fluid selection is unclear
Above 120 degrees the fluid and the pressurisation matter as much as the pump. We ask for both before quoting.
Technical Features
How It Is Built
- Maximum permissible fluid temperature 240 degrees Celsius
- Single stage single end suction hydraulics
- Mechanical seal with hard alloy faces or packing gland
- Free passage 0.2 mm, maximum specific gravity 1.1
- Flanged connections, horizontal installation
- Drive ratings to 160 kW at 380 to 415 V three phase
Specifications
Technical Data
SKWS published data. High temperature service depends on correct pressurisation, so send the circuit design pressure with the duty.
| Working Principle | Centrifugal |
|---|---|
| Main applications | Water |
| Driver | Electric motor |
| Power Specs | 380/415 V 220v,3phase;50hz/60hz |
| Max. permissible fluid temperature | 240°C |
| Type of connection | Flange |
| Installation position | Horizontal |
| Casing/Impeller material | Cast iron, Stainless steel/Cast iron, Stainless steel, Bronze |
| Shaft seal type | Mechanical seal; Packing gland |
| Free passage | 0.2 mm |
| Maximum gravity | 1.1 |
| Maximum drive rating | 160kW(215hp) |
| Maximum caliber | 20 inch(500mm) |
| Maximum head | 150m |
| Flow rate range | 1.5-1500 m3/h ( 25-25000 l /m) |
Materials And Process
What Goes Into Every Unit
Materials
- Cast iron or stainless steel casing
- Cast iron, stainless steel or bronze impeller
- Hard alloy seal faces
- Gaskets rated for the circuit temperature
Manufacturing And Assembly
- Casting and machining at the works
- Balanced impeller assembly
- Hydraulic test before dispatch
- Documentation package with the order
Quality Control
- Seal arrangement checked against the stated temperature
- Hydraulic performance test recorded
- Factory acceptance test record issued
Customization Options
- Material selection for the circuit fluid
- Seal type and face material
- Motor rating and supply voltage
- Flange standard and drilling
Compared With Other Options
| SKWR hot water pump | The SKWR is rated to 120 degrees. Above that, this model is the correct one rather than an uprated version of the other. |
|---|---|
| SKGS vertical high temperature pump | Same 240 degree rating in a vertical inline body, when floor space rather than headroom is the constraint. |
Use Guide
Operating At High Temperature
Confirm Pressurisation
Water above 100 degrees needs the circuit held above its vapour pressure. Confirm this before commissioning.
Heat Up Slowly
Raise circuit temperature in stages so the casing and seal reach temperature evenly.
Vent And Check
Vent thoroughly during heat up, since vapour pockets at the pump cause immediate seal damage.
Log The Baseline
Record flow, pressure, temperature and current once stable, and compare monthly.
Answers
SKWS High Temperature Centrifugal Pump FAQ
What is the maximum fluid temperature?
240 degrees Celsius as published on the SKWS data sheet.
Can it run on thermal oil?
For thermal oil circuits use the magnetic drive heat transfer line rated to 350 degrees, which has no shaft seal.
Does the high temperature build change the flow range?
No. Flow is 1.5 to 1500 m3/h with head to 150 m, the same as the rest of the family.
What seal is used?
Mechanical seal with hard alloy rotating and stationary rings, or a packing gland, selected against temperature and pressure.
What has to be right in the circuit?
Pressurisation, venting and expansion. A correctly rated pump in a badly pressurised circuit will still fail.
Related Equipment
Related Equipment From The Same Line
The rest of the high temperature and hot water range.
Centrifugal Pumps
SKGS High Temperature Centrifugal Pump
Vertical inline pump rated to 240 degrees for pressurised circuits.
View specifications →
High Temperature Pumps
Hot Oil Pump
Magnetic drive heat transfer pump for hot oil and hot water to 350 degrees.
View specifications →
Centrifugal Pumps
SKW Horizontal Centrifugal Pump
Close coupled end suction pump for clear water to 1500 m3/h and 150 m head.
View specifications →Need SKWS High Temperature Centrifugal Pump Sized For Your Duty Point
Send the circuit temperature, the design pressure and the flow, and we will confirm the build and the seal.