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Pump type
SE 800-100-11

Model: SE 800-100-11
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Pump type
SE 800-100-11

The SE 800-100-11-C pump and the unit based on it are designed for pumping water in district heating networks. The water should not contain solid particles larger than 0.2 mm or exceed a concentration of 5 mg/l.

The pumps are manufactured in the UHL climatic version — intended for macroclimatic regions with moderate and cold climates, placement category 4 — operation in indoor spaces with artificially controlled climate 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 800-100-11 800 100 1500 5,5 80 315 3010 4270

APPLICATION OF SE 800-100-11 NETWORK PUMP

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

TECHNICAL SPECIFICATIONS

Nominal pump parameters:

Parameter Value
Flow rate, m³/h 800
Head, m 100
Allowable cavitation margin, m* 5.5
Efficiency, % 80
Temperature, °C 10-180
Rotational speed, rpm 1500

*This is an important parameter to consider when designing the external network (pipelines and fittings) and selecting pump equipment.

DIMENSIONS AND WEIGHT

Parameter Pump Unit
Weight, kg 3010 6250
Dimensions (WLH), mm 1185*2215*1725 1185*3670*1890

The SE 800-100-11 network pump is driven by an asynchronous electric motor with a squirrel-cage rotor rated at 315 kW. The overall system efficiency (η) is 76%.

MAIN REQUIREMENTS FOR THE SE 800-100-11 PUMP DESIGN:

  • High reliability and efficiency;
  • External tightness and absence of internal leaks at rotor and stator joints;
  • Long service life – mean time to major overhaul not less than 40,000 hours (with proper maintenance);
  • Dynamic stability across all operating modes;
  • Stable, continuously decreasing head curve to ensure stable operation when pumps are connected in parallel;
  • Ease of assembly, disassembly, maintenance, and high reparability under operating conditions.

CONSTRUCTION FEATURES OF THE SE 800-100-11 NETWORK PUMP:

  • Horizontal design ensures high vibration resistance, reduces shaft misalignment, and extends service life of components;
  • Spiral casing with horizontal split along the pump axis for high maintainability, easy service, and installation; inlet and outlet nozzles at the bottom allow assembly/disassembly without disconnecting pipelines;
  • Two-stage pump with double-suction impellers;
  • Pump casing is a complex cast iron assembly (cover and body) with semi-spiral suction and spiral discharge channels; a transfer pipe connects water from the first to the second stage; inlet and outlet nozzles, support feet, and trough-shaped brackets for leak collection are integrated; support feet are close to the pump axis to reduce misalignment during heating; two pins in the lower casing fix the body to the foundation and allow guided thermal expansion;
  • Rotor is a separate assembly with shaft, two double-suction impellers, protective sleeves, stuffing box sleeves, bearings, and half-coupling; impellers are axially fixed via sleeves and nuts; thermal expansion gaps are provided;
  • Rotor is axially unloaded via double-suction impellers;
  • Rotor supported by external rolling bearings: drive side – single-row radial ball bearing for radial loads; other side – double-row angular contact ball bearing for radial and residual axial loads; bearings are lubricated with ring (sump) oil; bearing housings have water cooling channels and coils;
  • Mechanical seals of stuffing box type with cooling channels for pressurized fluid; second stage seal is unloaded via a relief pipe to the first stage inlet;
  • Torque is transmitted from motor to pump via flexible sleeve-pin coupling.

MATERIALS OF SE 800-100-11 NETWORK PUMP (CHT SLOVAKIA s.r.o.)

Reliability, durability, and efficiency are ensured by high-quality materials: pump casing, transfer pipe, impellers, diaphragms, sealing rings, bearing housings – cast iron СЧ200; pump shaft – heat-treated 40Х steel; stuffing box sleeves – stainless steel 20Х13; protective sleeves and bushings – carbon steel 20 and 45.

ADDITIONAL OPTIONS FOR SE 800-100-11:

  • Mechanical seal to reduce volumetric leakage and increase efficiency;
  • High-class materials/coatings for hydraulic parts to improve erosion resistance;
  • SKF rolling bearings for high precision, low friction, low noise, wear, heat, and energy consumption;
  • Flexible plate coupling between motor and pump to improve vibration characteristics and reliability;
  • VDS monitoring system (vibration, speed, temperature sensors) for condition tracking, early fault detection, and maintenance planning.

PURCHASING THE SE 800-100-11 NETWORK PUMP FROM CHT SLOVAKIA s.r.o.

To order a specific unit or get consultation for selection, contact our sales department via phone, website, or feedback form. Delivery is available to all CIS countries (except Russia and Belarus) and European countries.