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SKU: 93338824
Grundfos TPE3 50-370 Cast Iron Variable Speed Three Phase Inline Centrifugal Pump with Composite Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Engineered for high-efficiency fluid circulation in hydronic building systems, the TPE3 50-370 is a single-stage, close-coupled in-line centrifugal pump driven by a 4 kW electric motor. Featuring equal suction and discharge porting (DN 50), this unit connects directly into vertical or horizontal header pipe runs across HVAC plant rooms, district heating loops, and commercial water circuits.
Under nominal duty conditions, the wet-end hydraulic assembly generates a rated flow capacity of 777 L/Min alongside a maximum operational head limit of 23.15 m. The volute housing is constructed from EN-GJL-250 cast iron to ensure high structural pressure containment up to 16 bar. Inside, a precision-balanced Composite impeller works in tandem with a BQQE mechanical shaft seal. Net equipment weight measures 54 kg.
Electrical power for the TPE3 50-370 pump is supplied by a 3 x 380-500 V Three-phase electrical connection drawing 7.60 Amps under full load. The unit accommodates operating fluid media temperatures ranging from -25°C to 120°C under continuous line pressure ratings up to 16 bar. Pipework mounting is supported by opposite DN 50 inlet and DN 50 outlet flanged connections.
Motor protection complies with IP55 enclosure standards to guard internal windings against dust and moisture ingress, backed by Class F thermal insulation. An integrated frequency converter and PI controller provide continuously variable speed regulation to optimize energy consumption against system demand. The top-pull-out structural layout permits maintenance technicians to withdraw the motor drive and impeller assembly without unbolting the pump volute from connected system pipework flanges.
Features
- Integrated variable frequency converter with PI controller modulates motor RPM dynamically to balance flow demand and lower energy usage.
- Top-pull-out structural layout enables complete drive head and impeller extraction without disconnecting the pump casing from system piping.
- High-efficiency motor design delivers optimized hydraulic throughput with minimal electrical power consumption across variable duty cycles.
- EN-GJL-250 cast iron volute housing provides robust pressure containment up to 16 bar in demanding hydronic circulation loops.
- Corrosion-resistant Composite impeller rotor is precision-balanced to minimize operational vibration and extend bearing lifecycle.
- Standardized DN 50 flanged connections comply with EN 1092-2 for seamless drop-in integration into commercial pipe headers.
- Maintenance-free BQQE mechanical shaft seal prevents fluid leakage and maintains seal integrity under elevated working pressures.
IMPORTANT: Bulk freight charges apply. Please contact us for a freight quote before ordering.
SPECIFICATIONS
| Max Flow | 777 L/Min |
| Max Head | 23.15 m |
| Power | 4 kW / 415v |
| Rated Current | 7.60 Amps |
| Suitable For | Heating & Cooling Systems |
| Body Material | EN-GJL-250 Cast Iron |
| Liquid Temperature | '-25°C to 120°C |
| Inlet Size | 50 mm |
| Outlet Size | 50 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
In terms of metallurgical durability, what materials form the casing body and internal rotor?
Structural toughness in Grundfos TPE3 50-370 is maintained through an EN-GJL-250 cast iron shell housing an engineered composite impeller (PES-GF30).
Under variable operating speeds, what motor power rating, incoming feed, and amps are listed?
Power delivery to TPE3 50-370 relies on an efficient 4 kW motor connected to a three-phase 415 V electrical grid drawing 7.6 Amps.
Along process pipework, which thermal operating limits and system pressures are rated on site?
Operating boundaries for TPE3-50-370 encompass liquid temperatures of -25°C to 120°C and maximum hydraulic pressures up to 16 bar.
Responding dynamically to sensor feedback, what maximum delivery head does this circulator develop?
Hydraulic testing confirms that TPE3 50 370 achieves a maximum vertical delivery head of approximately 23.15 m.
Across automated distribution branches, what maximum flow capacity is certified for this unit?
Through integrated inverter control, TPE3/50/370 delivers a peak volumetric water flow of approximately 777 L/Min.
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