Grundfos MTH Immersible Centrifugal Pump
Product Overview
The Grundfos MTH series consists of immersible, multistage, vertical centrifugal pumps designed specifically for machine tool applications, making them particularly suitable for pumping cooling lubricants, condensate transfer, and similar tasks. These pumps feature a tank-top mounting design, with the pump body submerged in the pumped liquid during operation.
Key Features and Characteristics
1. Design and Structural Features
- Modular Design: Available in various sizes and stage counts to meet specific flow, pressure, and installation length requirements.
- Immersion-style Installation: Designed for mounting on top of a tank, with the pump chamber stack submerged in the pumped liquid.
- Material Options:
Standard Series (Type A): Wetted parts made of cast iron and stainless steel.
Stainless Steel Version (Type I): All wetted parts made of stainless steel (EN/DIN 1.4301 or higher grade). - Compact Structure: Composed primarily of two main components: the motor and the pump unit.
2. Performance Characteristics
- Flow Rate Range: 0.7–26 m³/h (50 Hz) or 0.7–32 m³/h (60 Hz).
- Head Range: Up to 10 bar (100 m).
- Temperature Range: -10°C to +90°C (standard models).
- High-Efficiency Operation: Peak efficiency up to 80%.
- NPSH Performance: Optimized inlet design ensures excellent cavitation performance.
3. Application Features
- Machine Tool Cooling: Specifically designed for machine tool cooling systems; suitable for cooling during milling, turning, grinding, and other machining processes.
- Filtration Systems: Compatible with machine tool filtration systems.
- Condensate Systems: Suitable for condensate recovery systems.
- Component Cleaning: Can be used in industrial component cleaning systems.
4. Motor Features
- Motor Type: Totally enclosed, fan-cooled, 2-pole Grundfos standard motor.
- Enclosure Class: IP54.
- Insulation Class: Class F.
- Voltage Options: Various voltage configurations available, including 3×220-240/380-415V, etc.
- High-Efficiency Motor: Complies with IE3 energy efficiency standards.
5. Installation and Maintenance Features
- Flexible Installation: Immersion depth is adjustable via the pump chamber to suit various tank depths
- Easy Maintenance: Shaft seal design facilitates maintenance
- Inlet Strainer: Standard inlet strainer prevents large particles from entering the pump
- Start-up Screw: Built-in start-up screw prevents dry running at low liquid levels
6. Special Feature Options
- High-Temperature Version: Solutions available for temperatures up to 120°C
- Various Shaft Seals: Shaft seals made of different materials available based on fluid characteristics
- Extension Pipe: Optional extension pipe available for deeper tanks
- Horizontal Installation: Horizontal installation supported for select models
Application Areas
- Cooling for machining operations (boring, sawing, milling, grinding, etc.)
- Cooling systems for EDM (Electrical Discharge Machining)
- Coolant circulation for wire-cut EDM machines
- Cooling systems for lathes
- Industrial cleaning equipment
- Filtration systems
- Condensate recovery systems