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Pump type
SE 800-55-11

Model: SE 800-55-11
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Pump type
SE 800-55-11

The SE 800-55-11-C pump and the unit based on it are designed for pumping water in heating networks. The water must not contain solid particles larger than 0.2 mm or with a concentration exceeding 5 mg/L.

The pumps are manufactured in the UHL climate version — intended for macroclimatic regions with moderate and cold climates, placement category 4 — operation in rooms (volumes) with artificially regulated climatic conditions according to GOST 15150-69.

Pump designation FLOW RATE, m3/h Pressure, m ROTATION SPEED, rpm ALLOWABLE NET POSITIVE SUCTION HEAD, m Pump efficiency, % Motor power, kW Pump weight, kg Unit weight, kg
SE 800-55-11 800 55 1500 5,5 81 200 1514 2710

The network pump belongs to a special group of power pumps, characterized by temperature fluctuations of the supplied water over a wide range of flows. It is designed for pumping water with a temperature of up to 180 °C in thermal networks.

TECHNICAL CHARACTERISTICS

Nominal pump parameters:

PARAMETER VALUE
Flow rate, m³/h 800
Head, m 55
Allowable cavitation margin, m* 5.5
Efficiency, % 81
Temperature, °C 10–180
Rotation speed, rpm 1500

*This is an important parameter that must be considered when designing the external network (pipeline system and valves) and selecting pump equipment.

DIMENSIONS AND WEIGHT

PARAMETER PUMP UNIT
Weight, kg 1515 2710
Dimensions (W × L × H), mm 1155 × 1480 × 1100 1155 × 2815 × 1275

The SE 800-55-11 network pump is driven by an asynchronous electric motor with a squirrel-cage rotor and a power of 200 kW. The overall efficiency of the system (η) is 77 %.

MAIN REQUIREMENTS FOR SE 800-55-11 PUMP DESIGN

  • High reliability and energy efficiency
  • External tightness and absence of internal leaks at rotor and stator joints
  • Long service life – average service life before major overhaul at least 31,500 hours (with proper maintenance)
  • Dynamic stability across the entire operating range
  • Stable, continuously decreasing head characteristic to ensure stable operation in parallel operation
  • Ease of assembly, disassembly, maintenance, and high maintainability

CONSTRUCTION FEATURES OF SE 800-55-11 NETWORK PUMP

  • Horizontal design: high vibration resistance, reduces shaft misalignment, prolongs component life
  • Spiral type with horizontal split along the pump axis: high maintainability, easy service and installation, simple operation. Suction and discharge nozzles at the bottom allow assembly/disassembly without pipeline removal
  • Single-stage with double-entry impeller
  • Pump casing: complex cast iron construction in two parts (pump cover and body) with semi-spiral inlet and spiral outlet channels. Bottom part has suction/discharge nozzles, support feet, leak collection trays, and bearing mounts. Feet are close to the pump axis to reduce thermal misalignment. Two pins fix the body to the foundation frame, allowing controlled thermal expansion
  • Rotor: separate assembly with shaft, double-entry impeller, bushings, seal sleeves, bearings, and pump half-coupling. Axial movements are fixed with seal bushings and nuts; thermal gaps compensate expansions
  • Rotor relieved from axial force using double-entry impeller
  • Bearings: external rolling bearings; drive side – cylindrical roller bearing (radial), other side – single-row ball bearing (radial and residual axial loads). Lubrication – liquid, ring (sump) with lubrication rings; bearing housings include water cooling chambers
  • Mechanical seals: gland type with hydroseal ring, with cooling passages and inlet for pressurized cooling liquid
  • Torque transmission from motor to pump via flexible sleeve-finger coupling

MATERIALS OF SE 800-55-11 NETWORK PUMP BY CHT SLOVAKIA S.R.O.

Reliability and durability are ensured by high-quality materials: pump casing, impeller, sealing rings, and bearing housings – cast iron СЧ200 for strength and corrosion resistance; shaft and seal bushings – carbon steel 45 with heat treatment.

ADDITIONAL OPTIONS FOR SE 800-55-11 NETWORK PUMP

  • Mechanical seal: reduces volumetric leakage, increases energy efficiency, easy maintenance
  • Higher-class materials and coatings for flow part components to increase erosion resistance
  • SKF rolling bearings: high precision, low friction, suitable for high-speed operation, low noise, wear, heat generation, and energy consumption
  • Flexible plate coupling between motor and pump: improves vibration characteristics and reliability
  • VDS monitoring system: optional sensors for vibration, speed, and temperature, allowing real-time condition monitoring and preventive maintenance planning

PURCHASE OF SE 800-55-11 NETWORK PUMP FROM CHT SLOVAKIA S.R.O.

To order a specific unit or get consultation for selection, contact our sales department via phone or online form. Delivery is available across all CIS countries (excluding Russia and Belarus) and Europe.