Leo XST50-250-185 / 18.5KW 400V Centrifugal Pump And Motor
10400
The LEO XST50-250/185 is a robust standard centrifugal pump engineered for reliable circulation and transfer of clean water and compatible liquids across demanding applications including water supply, irrigation systems, and air conditioning circulation. With delivery capacity up to 210 m3/h and head performance reaching 95 meters, this single-impeller pump excels in fire fighting systems and general industrial water handling where dependable performance is essential.
Built with premium AISI304 stainless steel and HT200 construction materials, the XST50-250/185 features a durable mechanical seal compliant with DIN 24960 and operates efficiently across temperatures from -10 degC to 85 degC. Its intelligent rear-entry design allows impeller and motor extraction without disconnecting the pump from pipework, while the axial intake and radial discharge configuration-combined with a lubricated mechanical seal system and IP54 motor enclosure-makes this centrifugal pump ideal for continuous-duty applications in water treatment facilities, HVAC systems, and agricultural irrigation operations.
At a glance
Power: 18.5 kW (25 HP)Supply: 400 V three-phase, 50 HzMax. head: 77 mMax. flow: 84 m³/h (1400 l/min)Connections: DN65 flange / DN50 flangeSpecifications
| Brand | Leo |
| Model | XST50-250-185 |
| Type | XST Standard Centrifugal Pump (close-coupled) |
| Motor power | 18.5 kW (25 HP) |
| Supply | 400 V three-phase, 50 Hz |
| Inlet / outlet | DN65 flange / DN50 flange |
| Shut-off head | 77 m |
| Flow range | 0 – 84 m³/h (0 – 1400 l/min) |
| Dimensions (W × L × H) | 45 × 98.2 × 54.5 cm |
| Weight | 172 kg |
| Item code | XST50-250-185(380V) |
Performance Table
| Flow Q (m³/h) | 0 | 36 | 42 | 48 | 54 | 72 | 84 |
|---|---|---|---|---|---|---|---|
| Flow Q (l/min) | 0 | 600 | 700 | 800 | 900 | 1200 | 1400 |
| Head H (m) | 77 | 73.2 | 72 | 70 | 68 | 60.5 | 51.5 |
Head at each flow rate from the manufacturer's technical data. For a duty-point check use the Get a Quote wizard below.
Performance Curves and Technical Data (PDF)
Download the curve sheet with the performance curves, dimensions and technical data for the Leo XST50-250-185:
Leo XST50-200 / XST50-250 Standard Centrifugal Pump – Performance Curves and Technical Data (07-END SUCTION CENTRIFUGAL PUMP catalogue p5, 11, 16)
997 kB | Download
Applications
- Circulation and transfer of clean, chemically non-aggressive water and other liquids
- Water supply & irrigation
- Water circulation in air conditioning systems
- Fire fighting system
Construction Features
- Single-impeller centrifugal pump featuring axial intake and radial discharge
- Inlet and outlet DN in compliance with EN 733 (ex DIN 24255) and UNI 7467
- Flanges in compliance with UNI 2236 and DIN 2532
- Rear entry (impeller, motor can be extracted without disconnecting the pump body from the pipes)
Operating Conditions
- Delivery: up to 210 m3/h
- Head: up to 95 m
- Liquid temperature: Standard -10 degC to 85 degC
- Maximum operating pressure: 12 bar (PN12)
- Anti-clockwise rotation when facing pump's suction port
- Impeller: AISI304, HT200
- Mechanical seal in compliance with DIN 24960
- Lubricated by internal recirculating pumped liquid
- Counter flange available on request
Motor
- Closed construction, external ventilation
- Insulation class: F
- Enclosures class: IP54
- Performance in compliance with CEI 2-3 (IEC 34.1)
- Max.ambient temperature: +40 degC
- Overload protection
- For model that >=9.2kw: Equiped with IE2 motor. IE3 motor available on request.
- For model that <=7.5kw, the following 4 models can equiped with IE3 motor. (XST40-160/30, XST40-160/40, XST50-160/55, XST50-160/75)
Model Code: XST50-250-185(380V)
- XST - Standard Centrifugal Pump
- m - Single Phase (m is omitted for three-phase)
- 32 - Outlet Diameter (mm)
- 125 - Impeller Nominal Diameter (mm)
- K - Extended Model
- 11 - Rated Power (1/10 kW)
Need help choosing or want a price?
Our pump team will check the right size for your flow and head and give you a quote.
WhatsApp us: 082 516 2248 Get a Quote / Size my pump info@pumps.co.za
Frequently Asked Questions
What is the maximum head of the Leo XST50-250-185?
The Leo XST50-250-185 has a maximum head of 77 m.
How much water can the Leo XST50-250-185 pump?
The Leo XST50-250-185 pumps up to 84 m³/h (1400 l/min).
What power supply does the Leo XST50-250-185 need?
Supply: 400 V three-phase, 50 Hz. Motor power: 18.5 kW (25 HP).
What are the pipe connections of the Leo XST50-250-185?
DN65 flange / DN50 flange.
