FH Series

Summary

Product identification

The Lowara FH Series comprises centrifugal electric pumps manufactured to Standard EN 733. These pumps are equipped with IE2/IE3 motors, complying with Regulation (EC) no. 640/2009 and IEC 60034-30, and are designed for 60 Hz operation.

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

Identification Code Structure: The product identification code follows the format: FH[2/4][Discharge Port Nominal Diameter]-[Impeller Nominal Diameter]/[Rated Motor Power kW x 10][6][A/B/Null or Letter]

• FH: Series name
• 2: 2-pole motor
• 4: 4-pole motor
• 6: 60 Hz
• E: Close-coupled version
• S: Version with rigid coupling, IEC standard motor
• F: Version with flexible coupling, support in compliance with EN 733
• Null or Letter: Version with steel or cast iron impeller, depending on size
• B: Version with bronze impeller

Operating limits

• Delivery:
  • Up to 480 m³/h (2 poles)
  • Up to 750 m³/h (4 poles)
• Head:
  • Over 100 m (2 poles)
  • Over 80 m (4 poles)
• Temperature of pumped liquid:
  • -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, and 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 maximum ambient temperature: +40°C.
• Motor duty: Continuous.

Mechanical / hydraulic

Construction Characteristics:

• Cast iron centrifugal pump with end suction and radial discharge ports.
• 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).
• Back pull-out design (impeller, adaptor, and motor can be extracted without disconnecting the pump body from the pipes).
• Counter-clockwise rotation when looking at pump from the suction port side.

Standard Materials (may vary by model, refer to PDF for specifics):

• Pump body: Cast iron (EN 1561-GJL-200 / ASTM Class 25 or EN 1561-GJL-250 / ASTM Class 35 for larger models).
• 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 FH 80 (excluding 65-315, 80-315, and 80-400).
• Shaft extension: AISI 316L stainless steel (EN 10088-1-X2CrNiMo17-12-2 / 1.4404).
• Mechanical seal: According to EN12756 (ex DIN 24960) and ISO 3069.
  • Standard for FH 32-80 (excluding 65-315, 80-315, 80-400): Ceramic / Carbon / NBR.
  • Standard for FH 100-150 (including 65-315, 80-315, 80-400): Silicon carbide / Carbon / EPDM.
  • Mechanical seal lubricated by internal recirculation of pumped liquid to seal housing for FH 32, 40, 50, 65, 80 (excluding 65-315, 80-315, and 80-400).
  • Mechanical seal locking pin slot for FH32, 40, 50, 65, 80 (excluding 65-315, 80-315, and 80-400).
• Elastomers:
  • NBR (standard version for FH 32-80).
  • EPDM (standard version for FH 100-150, 65-315, 80-315, 80-400).
• Fill and drain plugs: Nickel-plated brass.
• Fill and drain plugs seals: Aluminium.

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 version with spacer coupling are also available upon request.

Accessories on Request:

• AISI 316 stainless steel or galvanized iron counterflanges.
• Intermediate flange with pressure gauge connection.
• Pump and motor shims.

Optional Features:

• 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.
• 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).

Electrical

Motors:

• Squirrel cage in short circuit, aluminum casing, enclosed construction with external ventilation.
• Standard supplied IE2/IE3 motors are compliant with Regulation (EC) no. 640/2009 and IEC 60034-30 (for three-phase motors ≥ 0.75 kW).
• IP55 protection.
• Class 155 (F) insulation.
• Performances according to EN 60034-1.
• Continuous duty.
• Condensation drain plugs on all LOWARA motors.
• Cooling by fan according to EN 60034-6.
• Cable gland metric size according to EN 50262.

Standard Voltage (60 Hz):

• 2-pole motors:
  • Single-phase: 220-230 V.
  • Three-phase: 220-380 V.
• 4-pole motors:
  • Three-phase: 220-380 V.
• Single-phase versions (220-230 V 60 Hz) include automatic-reset overload protection up to 1.5 kW.
• Three-phase versions (220-380 V 60 Hz) require overload protection to be provided by the user.

Optional Electrical Features:

• Different voltages and frequencies.
• Tropicalized motors.

Model Lists and Motor Data

The document provides extensive lists of 2-pole and 4-pole models, including available kW ratings and coupling versions (FHE, FHS, FHF, 2FHE, FHEM, FHE4, 2FHE4, FHS4, FHF4). Detailed material tables are also provided for various components across different series (2FHE/2FHE4, FHE/FHE4, FHS/FHS4, FHF Bare Shaft).

Motor performance data for single-phase and three-phase motors (2-pole and 4-pole) are tabulated, including efficiency, current, power factor, and torque ratios at various load points and voltages.

See the official PDF for exact tabulated values.

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Disclaimer: This summary is based solely on the extracted text and may not include all figures, footnotes, or the latest revisions present in the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror