LPS

Summary

Product identification

• Product Line: LPS In-Line Centrifugal Pumps
• Operating Frequency: 50 Hz
• Model Naming Convention: LPS [Discharge Size] / [Power Code] [M for Single Phase]
  • Example: LPS 25/08M (Single Phase, DN 25 discharge, 0.08 kW power code)

Operating limits

• Liquid Handled Temperature: min. -10 °C, max. +100 °C
• Max Environment Temperature: 40 °C
• Min Suction Pressure: -0.6 MPa at 35 °C
• Max Positive Suction Pressure:
  • 0.2 MPa (All single-phase models)
  • 0.2 MPa (LPS 25 three-phase models)
  • 0.4 MPa (LPS 32, 40, 50 three-phase models)

Feed water

• Type of Liquid: Clean water
• Test Conditions for Performance Curves: Clean water at 20 °C with a kinematic viscosity of ν = 1 mm²/s (1 cSt).

Mechanical / hydraulic

• Pump Type: In-line centrifugal
• Impeller: Closed centrifugal
• Shaft Seal Type: Mechanical seal
• Bearing Type: Sealed ball bearing
• Pipe Connection (Suction/Discharge Flange): From DN 25 up to DN 50
• Construction Materials:
  • Casing: AISI 304
  • Impeller: AISI 304
  • Casing Cover: AISI 304
  • Shaft Seal: Ceramic/Carbon/NBRH
  • Shaft: AISI 303 (wet extension)
  • Motor Bracket: Aluminium
  • Motor Cover: Aluminium
  • Fan: PA
  • Fan Cover: Fe P04 Galvanized
  • Priming Plug: AISI 304
  • Drain Plug: AISI 304
  • Impeller Nut: AISI 304
• Mechanical Seal Components:
  • Rotary Seal Ring: Ceramic
  • Stationary Seal Ring: Carbon graphite
  • Cup Gasket: NBRH
  • Seat Ring: NBRH
  • Case: AISI 304
  • Self Driving Spring: AISI 304
  • Bellows: NBRH
• Counter Flange Fittings (Standard): Galvanized steel (AISI 304 upon request)
• Gasket Fittings (Standard): EPDM version (VITON upon request)
• Applicable Standard of Test: ISO 9906 - Annex A
• Dimensions and Weights: See the official PDF for exact tabulated values for pump dimensions, weights, and packing dimensions.
• Bearings: See the official PDF for exact tabulated values for specific pump models and phases.

Electrical

• Motor Type: Electric - TEFC
• Number of Poles: 2
• Rotation Speed: ≈ 2800 min⁻¹
• Insulation Class: Class F
• Protection Degree: IP 55 (CEI EN 60034-5)
• Power Rating: 0.08 ÷ 1.5 kW (0.1 ÷ 2 HP)
• Frequency: 50 Hz
• Voltage:
  • Single Phase: 230 ±10% V
  • Three Phase: 230/400 ±10% V
• Capacitor: Built-in (Single Phase models)
• Overload Protection: Built-in (Single Phase models), User to provide (Three Phase models)
• Cable Entry Dimensions: PG11, PG13.5, M16x1.5, M20x1.5
• Efficiency Level (Reg. 640/2009):
  • Single Phase: Not specified
  • Three Phase: IE2 or IE3 from 0.75 kW up to 1.5 kW
• Motor Data: See the official PDF for exact tabulated values for efficiency, capacitor details, input power, full load current, and locked rotor current for specific models and phases.
• Minimum Efficiency Index (MEI): The benchmark for most efficient water pumps is MEI ≥ 0.70. Some models (e.g., LPS 40/25M, LPS 50/40M, LPS 50/75M, LPS 50/150M) have MEI values specified (e.g., MEI > 0.40, MEI > 0.10).

Noise data

• Sound Pressure Level (LpA): Ranges from 60 dB(A) to 65 dB(A) depending on the model.
• Tolerance: ± 2.5 dB.
• Measurement: Mean value of several measures at 1m distance around the pump.

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Disclaimer: This summary is based on extracted text and may miss figures, footnotes, or revisions present in the complete OEM PDF. Contractual data must always match the official OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror