GS 2

Summary

Product Identification

• Model: GS - Standardised end suction pumps
• Type: One-stage horizontal centrifugal pump
• Frequency: 50Hz
• Available Sizes: From DN 32 up to DN 200

Main Applications

• Industry:
  • Semiconductor Industry: Pure water
  • Food Industry: General water (cooling water, recycling water, filtered water), Cleaning in place
  • Pulp and Paper Industry: Water
  • Automobile Industry: Water (without slurry)
  • Steel Industry: Cooling Water, Cooling Water with glycol (30%)
  • Non-ferrous Metal Industry: Cooling Water, Cooling Water with glycol (30%)
  • Garbage Incineration: Cooling Water, Deaerator, Condensate water
• Building Service:
  • Pressurization for industrial use
  • Pressurization for buildings
  • Fire-fighting system
  • Heating and cooling systems
  • Air conditioning system
• Water Supply:
  • Water supply duties for municipalities
  • Irrigation
  • Agriculture
  • Swimming pool

General Description and Features

• Design: One-stage horizontal centrifugal pump, available in bare shaft and electropump versions.
• Compliance: Compliant to European directives, certified for sale in Russia, Kazakhstan, and Belarus. Compliant to EN733, ISO 2858, EN 12756, EN 294.
• Energy Saving: Impeller design and double bronze wear ring optimize fluid movement, assuring a high MEI index (> 0,6 for all models). High motor efficiency IE3 starting from 0,75 kW, compliant to EuP 2005/32/Ec and ErP 2009/125/EC regulations. Possibility to mount VFD systems.
• Interchangeability: Complete interchangeability with competitor’s models due to EN733 compliance.
• Configuration: Many different material configurations for a wide range of applications.
• Maintenance: Back pull out design allows maintenance without removing the pump body from the pipeline. Shielded bearings do not require lubrication.
• Seal Options: Available with mechanical seal or gland packing seal, offering high wear resistance and allowing monitoring of the seal of the whole pumpset.

Operating Limits

• Capacities: To 1300 m³/h (50Hz)
• Heads: To 150 m (50Hz)
• Liquid Temperatures: -10°C to 120°C (0-80°C in case of gland packing)
• Max. Working Pressures: Up to 16 Bar (1.6 MPa)
• Rotation Speed: 1450 min⁻¹ or 2900 min⁻¹
• Rotation: Clockwise viewed from coupling end

Mechanical / Hydraulic

Materials of Construction

• Casing: Cast iron (EN-GJL-250 / EN-JL1040)
• Impeller: Cast iron (EN-GJL-200 / EN-JL1030), Ductile cast iron (EN-GJS-400-15 / 5.3106), Bronze (CuSn5Zn5Pb5 / CC491K)
• Shaft: Cr. steel (X17CrNi16-2 / 1.4057)
• Keys: 12% Cr. steel (X30Cr13 / 1.4028), Carbon steel (C50 / 1.0540)
• Spacer: 304 Stainless steel (X5CrNi18-10 / 1.4301)
• Impeller Nut (A/B): 304 Stainless steel (X5CrNi18-10 / 1.4301)
• Bearing Housing: Cast iron (EN-GJL-150 / EN-JL1020)
• Bearing Cover: Cast iron (EN-GJL-150 / EN-JL1020)
• Ball Bearing: Steel
• Deflector: EPDM
• Stay: Carbon steel
• Case Wear Ring: Bronze (CuSn5Zn5Pb5 / CC491K)
• O-Ring: EPDM
• Bolts: Carbon steel
• Plain Washer: 304 Stainless steel (X5CrNi18-10 / 1.4301)
• Spring Lock Washer: 304 Stainless steel (X5CrNi18-10 / 1.4301)
• Plugs: Carbon steel
• Mechanical Seal: SiC/carbon/EPDM
• Gland Packing Type Specific Components:
  • Casing Cover (cylindrical): Cast iron (EN-GJL-250 / EN-JL1040)
  • Shaft Sleeve: 304 Stainless steel (X5CrNi18-10 / 1.4301)
  • Lantern Ring: Bronze (CuSn5Zn5Pb5)
  • Gland: Bronze (CuSn5Zn5Pb5)
  • Gasket: Joint sheet gasket
  • Gland Packing: Silicone carbide fiber packing
  • Gland Bolt: Brass

Shaft Seal Selection

• Mechanical Seal:
  • Liquid temperature: -10 to 120 °C
  • Liquid: Clean water, hot water, water with glycol (30%)
  • Rotating part: Silicon carbide (Q1)
  • Fixed part: Carbon graphite resin impregnated (B)
  • Elastomers: Ethylene propylene rubber - EPDM (E)
  • Spring: AISI 316 (G)
• Gland Packing:
  • Liquid temperature: 0 to 80°C
  • Liquid PH: from 2 up to 12
  • Liquid: Clean water, hot water, slightly acid water, slightly alkaline water, oil
  • Material: Silicone carbide fiber packing
  • Note: Gland packing is available only with bronze impeller.

Impeller Diameter

Impeller diameter dimension ranges are provided for various models operating at 2 Poles and 4 Poles. See the official PDF for exact tabulated values.

Nominal Dimensions of Parts

Detailed nominal dimensions (e.g., Case Wear Ring, O-Ring, Ball Bearing type, Gland Packing, Sleeve, Gasket) are tabulated for each pump model. See the official PDF for exact tabulated values.

Overall Dimensions and Weights

Dimensional drawings and tables for GS 2900min⁻¹ and GS 1450min⁻¹ models, including motor kW, frame, common dimensions, and weights for both standard and spacer couplings, are available. See the official PDF for exact tabulated values.

Electrical

• Motor Power: from 0,75 up to 355 kW
• Motors from 0,75 kW are guaranteed in IE3 efficiency class.
• The extracted text indicates an "ELECTRICAL DATA" section in the full document, but no specific electrical data (e.g., voltage, current) is provided in this extract.

Disclaimer This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. For contractual data and full product specifications, always refer to the official OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror