FH Series

Summary

Product Identification

• Product Line: Lowara FH Series Centrifugal Electric Pumps
• Compliance: Manufactured to Standard EN 733. Equipped with IE2/IE3 motors compliant with Regulation (EC) no. 640/2009 and IEC 60034-30.
• Operation Frequency: 50 Hz
• Market Sectors: Civil, Agricultural, Industrial
• Applications:
  • Handling of clean, chemically non-aggressive water and liquids.
  • Water supply and pressure boosting.
  • Irrigation.
  • Water circulation in air conditioning systems.
  • Washing systems.
  • Industry.
  • Agriculture.
  • Swimming pools.
• Motor-Pump Coupling Types:
  • FHE: Close-coupled by means of an adaptor bracket with an impeller keyed directly to the motor shaft extension.
  • FHS: With a bracket, adaptor, and rigid coupling keyed to the standard motor shaft extension.
  • FHF: With bracket, support, flexible coupling, and aligning and anchoring base.
  • Bare shaft pump and versions with spacer coupling are also available.

Operating Limits

• Pumped Liquid Temperature:
  • -20°C to +85°C for FH 32, 40, 50, 65, 80 (standard version).
  • -30°C to +120°C for FH 100, 125, 150 (standard version, including 65-315, 80-315, 80-400).
  • Upon request, up to +140°C for FH 100, 125, 150.
• Maximum Operating Pressure:
  • 12 bar (PN 12) up to FH 80.
  • PN 16 flanges for FH 100, 125, 150.
  • Maximum pressure in pump casing: 12 bar for temperatures up to 120°C, 10 bar for temperatures ranging from 120°C to 140°C.
• Motor Ambient Temperature: Max. 40°C.
• Altitude: Up to 1000 m above sea level.
• Duty: Continuous duty.

Electrical

• Motor Type: Squirrel cage in short circuit, aluminum casing, enclosed construction with external ventilation (TEFC).
• Protection: IP 55.
• Insulation Class: 155 (F).
• Electrical Performance: According to EN 60034-1.
• Cooling: By fan according to EN 60034-6.
• Cable Gland: Metric size according to EN 50262.
• Standard Voltage (50 Hz):
  • Single-phase version: 220-240 V, with incorporated automatic-reset overload protection up to 1.5 kW.
  • Three-phase version: 220-240/380-415 V for powers up to 3 kW.
  • Three-phase version: 380-415/660-690 V for powers above 3 kW.
  • Note: Overload protection for three-phase versions to be provided by the user.
• Motor Performance Data: Detailed tables for single-phase and three-phase motors (FHE, FHS, FHF series, 2-pole, 50 Hz) are available in the official PDF, listing kW, current, efficiency, power factor, speed, and other characteristics.

Mechanical / Hydraulic

• Pump Design: Cast iron centrifugal pump with end suction and radial discharge ports.
• Hydraulic Standards: Hydraulic sizes and nominal diameter (DN) of suction and discharge ports according to EN 733 (ex DIN 24255).
• Flanges: According to EN 1092-2 (ex UNI 2236) and DIN 2532.
• Maintenance: Back pull-out design (impeller, adaptor, and motor can be extracted without disconnecting the pump body from the pipes).
• Rotation: Counter-clockwise when looking at the pump from the suction port side.
• Delivery (Flow Rate):
  • Up to 650 m³/h (2 poles).
  • Up to 750 m³/h (4 poles).
• Head:
  • Over 100 m (2 poles).
  • Over 60 m (4 poles).
• Impeller:
  • AISI 316L stainless steel, laser technology welded for sizes 32, 40, 50, 65-125.
  • Cast iron for sizes 65-160, 65-200, 65-250, 65-315, 80, 100, 125, 150.
  • Bronze impeller available on request (for models normally equipped with cast iron impeller).
• Wear Rings: AISI 316L stainless steel on impeller front and rear wear plates up to FH80 (excluding 65-315, 80-315, 80-400).
• Mechanical Seal:
  • Mounting dimensions according to EN 12756 (ex DIN 24960) and ISO 3069.
  • Lubricated by internal recirculation of pumped liquid to seal housing for FH 32, 40, 50, 65, 80 (excluding 65-315, 80-315, 80-400).
  • Mechanical seal locking pin slot for FH 32, 40, 50, 65, 80 (excluding 65-315, 80-315, 80-400).
  • Standard Materials (FHE-FHS-FHF 32÷80, excluding 65-315, 80-315, 80-400): Ceramic / Carbon / NBR.
  • Standard Materials (FHS-FHF 100÷150, including 65-315, 80-315, 80-400): Silicon carbide / Carbon / EPDM.
  • Other mechanical seal material combinations (e.g., Silicon carbide, Resin impregnated carbon, Ceramic, NBR, EPDM, FPM, AISI 316) are available; see the official PDF for specific types and temperature limits.
• Construction Materials (General):
  • Pump Body / Seal Housing / Diffuser / Adapter / Adapter Motor Connector / Transmission Support Body: Cast iron (EN 1561-GJL-200 / ASTM Class 25 or EN 1561-GJL-250 / ASTM Class 35, depending on model/size).
  • Impeller: AISI 316L stainless steel, Cast iron, or Bronze (optional).
  • Wear Ring / Counterwear Ring / Impeller Spacer / Shaft Extension / Shaft Rigid Coupling / Impeller Lock Nut and Washer / Tab: AISI 316L stainless steel (EN 10088-1-X2CrNiMo17-12-2 or EN 10088-1-X5CrNiMo17-12-2) or AISI 420 stainless steel (EN 10088-1-X20Cr13), depending on model/size.
  • Elastomers: NBR (standard) or EPDM (standard for larger models). FPM also listed as an option.
  • Fill and Drain Plugs: Nickel-plated brass (EN 12164-CuZn39Pb3).
  • Fill and Drain Plug Seals: Aluminium (EN 573-AW-Al99,5) or Asbestos-free synthetic fiber AFM34®.
  • Pump Body Fastening Bolts and Screws: Galvanized steel or Steel.

Optional Features & Accessories

• Accessories on Request:
  • AISI 316 stainless steel or galvanized iron counterflanges.
  • Intermediate flange with pressure gauge connection.
  • Pump and motor shims.
• Optional Features:
  • Different voltages and frequencies.
  • Special materials for the mechanical seal and gaskets.
  • Model with air valve.
  • Mechanical seal with anti-rotation lockpin.
  • Model with external fluxing of the mechanical seal.
  • Tropicalized motors.
  • Version with Hydrovar® control system.
  • FHF with flexible coupling with spacer.
  • Diesel engines.
  • Version with bronze impeller.
  • ATEX 94/9/CE, Gruppo II, Category 3, gas atmosphere (G).

Model Availability (50 Hz, 2 Poles & 4 Poles)

The document provides extensive tables listing available models (FHE, FHEM, 2FHE, FHS, FHF, FHF..SC for 2-pole; FHE4, 2FHE4, FHS4, FHF4 for 4-pole) with corresponding power ratings (kW). See the official PDF for exact tabulated values and specific model configurations.

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. Contractual data for any project must always match the specific OEM PDF revision used for that project.

Official datasheet (PDF)

Lenntech datasheet mirror