SVI Series

Summary

Product identification

The Lowara SVI Series comprises submersible vertical electric pumps, available in models 2, 4, 8, 16, 33, 46, 66, and 92. These pumps are equipped with IE2/IE3 motors, complying with Regulation (EC) no. 640/2009, and operate at 60 Hz.

Applications:

• Pumping of coolants, lubricants, and condensate.
• Machine tools, welders, engine test stands.
• Cooling systems.
• Washing systems.

Market Sectors:

• Industrial, Civil.

Pump Versions:

• E (Close-coupled): Impellers, diffusers, outer sleeve, suction base, and filter made entirely of stainless steel. Adapter with delivery port in cast iron. Mechanical seal in Ceramic/Carbon/FPM.
• EN (AISI 316 Close-coupled): Made entirely of AISI 316 stainless steel. Mechanical seal in Ceramic/Carbon/FPM.
• S (With coupling): Impellers, diffusers, outer sleeve, suction base, and filter made entirely of stainless steel. Adapter with delivery port in cast iron. Mechanical seal in Silicon Carbide/Carbon/FPM.
• N (AISI 316 With coupling): Made entirely of AISI 316 stainless steel. Mechanical seal in Silicon Carbide/Carbon/FPM.

Operating limits

• Delivery: Up to 144 m³/h.
• Head: Up to 248 m.
• Liquid Temperature:
  • -10°C to +90°C for S and N versions (with coupling).
  • -10°C to +60°C for E versions (close-coupled).
• Maximum Ambient Temperature: +40°C.
• Minimum Suction Liquid Level:
  • 25 mm for SVI 2-4-8-16 models.
  • 80 mm for SVI 33-46-66-92 models.
• Maximum Pressure: Varies by model (e.g., 24 bar, 21 bar, 28 bar, 22 bar, 17 bar). See the official PDF for exact tabulated values.
• Motor Operating Conditions (refer to motor only):
  • Altitude: Up to 1000 m above sea level.
  • Ambient Temperature: -15°C to +40°C.

Feed water

These pumps are designed to handle clean liquids, free of abrasive substances or fibres, with a kinematic viscosity up to 37 mm²/sec.

Electrical

• Motor Type: 2-pole, short-circuit squirrel-cage (TEFC), enclosed construction with external ventilation.
• Efficiency: Standard supplied IE2/IE3 three-phase surface motors ≥ 0.75 kW are compliant with Regulation (EC) no. 640/2009 and IEC 60034-30.
• Protection: IP55.
• Insulation: Class 155 (F).
• Performance: According to EN 60034-1.
• Standard Voltage (Three-phase, 2 poles): 220 V ∆, 380 V Υ, 60 Hz.
• Optional Voltage (Single-phase): 220-230 V 60 Hz (on request).
• Overload Protection: To be provided by the user.
• Motor Power: Ranges from 0.37 kW to 30 kW. See the official PDF for exact tabulated values.
• Motor Noise: Mean sound pressure levels (Lp) measured at 1 meter's distance in a free field according to ISO 1680 (A curve). Noise values measured with idling 60 Hz motor with a tolerance of 3 dB(A). Most models are <70 dB(A), with some up to 77 dB(A). See the official PDF for exact tabulated values.

Mechanical / hydraulic

• Installation: Standard vertical position; horizontal installation available on request.
• Suction: Base in the suction side with an integrated filter to prevent damage from solids.
• Rotation: Clockwise when viewed from top down (marked with an arrow).
• Pump Columns: Longer pump columns (from coupling flange to suction base) are available on request.
• Tank Coupling Flange: Compliant with EN 12157 (ex DIN 5440) for SVI 2-4 models.
• Mechanical Seals:
  • E versions: Ceramic/Carbon/FPM.
  • S and N versions: Silicon Carbide/Carbon/FPM.
  • For SVI 33-46-66-92 models, the mechanical seal can be replaced without removing the motor.
• Delivery Port Connections:
  • SVI 2-4 E/EN: Threaded Rp 3/4
  • SVI 2-4 S/N: Threaded Rp 1 1/4
  • SVI 8-16 S/N: Threaded Rp 2
  • SVI 33-46-66-92 S/N: Flanged DN 80 (can be coupled to counter-flanges according to EN 1092).
• Construction Materials:
  • SVI 2, 4 (E, EN versions): Impellers, diffusers, outer sleeve, suction base, and filter are stainless steel (AISI 304, AISI 316L, ASTM CF8M). Adapter is cast iron (E) or AISI 316 cast (EN). Shaft is stainless steel (AISI 304 or AISI 316). Elastomers are FPM. Shaft sleeve is Tungsten carbide. Bushing is Ceramic (Alumina).
  • SVI 2, 4, 8, 16 (S, N versions): Impellers, diffusers, outer sleeve, suction base, and filter are stainless steel (AISI 304, AISI 316L, ASTM CF8M). Adapter is cast iron (S) or AISI 316 cast (N). Shaft is stainless steel (AISI 304 or AISI 316). Coupling is Aluminium (up to 4 kW) or Cast iron (for higher powers). Elastomers are FPM. Shaft sleeve is Tungsten carbide. Bushing is Ceramic (Alumina).
  • SVI 33, 46, 66, 92 (S, N versions): Impellers, diffusers, tie-rods, suction base, and filter are stainless steel (AISI 304, AISI 316L, ASTM CF8M). Upper head and adapter are cast iron (S) or AISI 316 cast (N). Shaft is stainless steel (AISI 431) for S versions, or Duplex stainless steel (UNS S 31803) for N versions. Wear ring is Technopolymer PPS. Bushing for diffuser is Carbon. Elastomers are FPM. Shaft sleeve and bushing are Tungsten carbide.
  • See the official PDF for exact tabulated values for each component and version.

---

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 must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror