KSB ETNY / SYT High Temperature Thermal Oil Pump

The KSB ETNY/SYT series thermal oil pumps are horizontal, single-stage volute pumps designed by KSB (Germany) specifically for high-temperature heat transfer medium circulation systems. They are suitable for closed-loop circulation transport of thermal oil, hot water, and other high-temperature fluids, and are widely used in petrochemical, textile printing and dyeing, food processing, and plastics industries.

This series of pumps is designed in strict accordance with DIN 24255 / EN 733 standards and meets the performance requirements of ISO 2858 / EN 22858. With its reliable sealing structure, high-temperature resistant materials, and efficient fluid design, it can operate stably for extended periods under hot conditions, making it an ideal component for heat transfer fluid heating systems.

KSB ETNY / SYT High Temperature Thermal Oil Pump Model Description

The model naming of ETNY/SYT series pumps follows the KSB standard coding system. Taking ETNY 050-032-160 as an example:

Code Location | Meaning | Example Interpretation

ETNY Pump Series Code | Etnorm SYT Thermal Oil Pump

050 | Nominal Suction Inlet Diameter (mm) | DN 50

032 | Nominal Discharge Inlet Diameter (mm) | DN 32

160 | Nominal Impeller Diameter (mm) | Φ160 mm

Available specifications include:

Model Series Inlet Diameter (DN) Outlet Diameter (DN)

ETNY 050-032-160 / -200 / -250 50 32

ETNY 065-040-160 / -200 / -250 65 40

ETNY 065-050-160 / -200 / -250 65 50

ETNY 080-065-160 / -200 / -250 80 65

ETNY 100-080-200 / -250 100 80

ETNY 125-100-160 / -200 / -250 125 100

KSB ETNY / SYT High Temperature Thermal Oil Pump Core Technical Parameters

General Performance Parameters

Parameter Item | Value Range

Maximum Flow Rate | Up to 754 m³/h

Maximum Head | Up to 102 m

Maximum Medium Temperature | 350 °C (Heat Transfer Oil)

Minimum Medium Temperature | -30 °C

Maximum Allowable Working Pressure | 16 bar (PN 16)

Speed | 2900 rpm / 1450 rpm (Optional)

Inlet Diameter | DN 40 – DN 150 (Depending on Model)

Outlet Diameter | DN 25 – DN 125 (Depending on Model)

Drive Type | Electric (Three-phase Asynchronous Motor)

Protection Class | IP55

Insulation Class | F

Typical operating condition performance reference (taking ETNY 050-032-160 as an example)

Parameter Values

Flow Rate Approx. 30 – 64 m³/h

Head Approx. 38 – 60 m

Inlet Diameter DN 65

Outlet Diameter DN 40

Matching Motor Power 11 kW

Note: Actual performance data depends on the specific model and speed configuration. It is recommended to select the model 

according to the actual operating conditions.

KSB ETNY / SYT High Temperature Thermal Oil Pump Product Features and Design Advantages

1. High-Temperature Reliability

The pump body is designed with a 3.2 mm corrosion margin to ensure long-term durability under high-temperature conditions.

 The entire pump adopts a self-heating heat dissipation structure, eliminating the traditional water cooling system, resulting in

 a more compact structure, reduced operating costs, and reliable operation.

2. Advanced Sealing Technology

Utilizes mechanical seals conforming to DIN 24960 / EN 12756 standards.

Single-end or double-end mechanical seals are available depending on operating conditions.

The sealing structure is optimized for high-temperature hot oil conditions, ensuring leak-free operation.

3. High-Efficiency Hydraulic Design

Closed radial impeller with multi-curvature blades for high fluid efficiency.

The impeller is dynamically balanced for smooth and quiet operation.

Single-suction impeller design meets high flow rate requirements.

4. Reliable Bearing System

The pump end uses product-lubricated carbon graphite sliding bearings (more stable under high-temperature conditions).

The drive end uses grease-lubricated radial ball bearings.

Meets API vibration and shaft seal flushing specifications.

5. Flexible Configuration Options

Standard configuration: Flexible coupling + coupling cover + common base.

ATEX explosion-proof type optional (suitable for hazardous areas).

Optional variable frequency drive (PumpDrive) system for variable flow rate operation and significant energy savings.

KSB ETNY / SYT High Temperature Thermal Oil Pump  Main Application Areas