Multi

Summary

Product identification

The ESPA Multi series includes horizontal and vertical multi-stage centrifugal pumps for water supply applications. The range features standard models (Multi, Multi VE) and models with integrated inverters for variable speed operation (Multi ESD, Multi VS-ESD).

Applications

Multi Surface Horizontal & Vertical (Standard)

• Spray irrigation systems
• Hydropneumatic sets
• Industrial installations

Multi ESD Surface Vertical (Integrated Inverter)

• Constant water supply in dripping irrigation installations
• Industrial applications requiring constant pressure

Multi VE Surface Vertical

• Spray irrigation systems
• Hydropneumatic sets

Multi VS Surface Vertical

• Water supply in building and services
• Clear water transfer in industrial processes
• Civil construction and irrigation systems
• Water boosting in multi-pump sets or single pump uses
• Automatic and manual irrigation systems
• Cleaning installations
• Demineralized water transfer
• Cold and hot water circulation for industrial process or water exchange heating systems

Multi VS-ESD Surface Vertical (Variable Speed)

• Water supply and pressure boosting for residential, commercial, or service buildings
• Clean water transfer, water treatment, irrigation

Operating limits

Multi Surface Horizontal & Vertical (Standard)

• Maximum temperature of liquid: 40 °C

Multi VE Surface Vertical

• Maximum temperature of liquid: 40 °C

Multi VS Surface Vertical

• Liquid temperature: from -20 to 120 °C
• Maximum working pressure: 25 bar for version F
• Flow range:
  • Multi VS 4: from 7 to 108 l/min. BEP: 67 l/min.
  • Multi VS 6: from 10 to 150 l/min. BEP: 100 l/min.
  • Multi VS 10: from 18 to 220 l/min. BEP: 167 l/min.
  • Multi VS 15: from 27 to 375 l/min. BEP: 250 l/min.
  • Multi VS 25: from 43 to 583 l/min. BEP: 417 l/min.

Mechanical / hydraulic

Materials

Multi Surface Horizontal & Vertical (Standard)

• Pump body and impellers: stainless steel AISI 304
• Diffusers: technopolymer
• Mechanical seal: graphite and alumine
• Motor housing: aluminium L-2521
• Flanges, suction and discharge connections: cast iron
• Motor shaft: stainless steel AISI 420
• Multi35N 8 and 10 / Multi55N 6 and 7 motor shaft: stainless steel AISI 303

Multi ESD Surface Vertical (Integrated Inverter)

• Materials as per the base pump.

Multi VE Surface Vertical

• Pump shaft, impellers, pump body and protection grid: stainless steel AISI 304
• Suction body, discharge body and motor-pump coupling: cast iron
• Diffusers: technopolymer
• Motor housing: aluminium
• Rods: F 212 Zn
• Pump motor coupling system: V18

Multi VS Surface Vertical

• Multi VS F: all wetted components in stainless steel AISI 304
• Multi VS N: all wetted components in stainless steel AISI 316 (available on request)
• Multi VS C: all wet parts in AISI 304 and foot in cast iron

Multi VS-ESD Surface Vertical (Variable Speed)

• Hydraulic: completely in stainless steel AISI 304 or AISI 316 (version N)
• Mechanical seal: silicon/carbon/EPDM

Equipment

Multi Surface Horizontal & Vertical (Standard)

• Supplied with oval counter flanges DIN 2558

Multi ESD Surface Vertical (Integrated Inverter)

• Pumps supplied with VFD integrated
• Pressure transducer must be ordered separately

Multi VE Surface Vertical

• Supplied with counter flanges and gaskets

Multi VS-ESD Surface Vertical (Variable Speed)

• Supplied with a standard pressure transducer 10, 16 or 25 bar
• Counter flanges (optional extra)

Hydraulic Performance

Hydraulic performance tables are available for Multi 25, Multi 35, Multi 55, Multi VE94, Multi VE121N, Multi VS4, Multi VS6, Multi VS10, Multi VS15, Multi VS25, Multi VS-ESD 4, Multi VS-ESD 6, Multi VS-ESD 10, Multi VS-ESD 15, and Multi VS-ESD 25 models. See the official PDF for exact tabulated values including flow rates, head, current, and power.

Dimensions and Weights

Detailed dimensions and weights are available for Multi 25, Multi 35 N / Multi 55 N, Multi ESD 25, Multi ESD 35, Multi ESD 55, Multi VE94, Multi VE121, Multi VS4, Multi VS6, Multi VS10, Multi VS15, and Multi VS25 models. See the official PDF for exact tabulated values.

Electrical

Motor Specifications

Multi Surface Horizontal & Vertical (Standard)

• Type: Asynchronous, two poles
• Protection: IP 44
• Insulation: Class F
• Operation: Continuous
• Efficiency: IE3
• Multi25: Single-phase version up to 1.5 HP built-in thermal protection
• Multi35N: Single-phase version up to 1 HP built-in thermal protection
• Energy Index: MEI≥0,4 for Multi 25/35; MEI≥0,4 for Multi 55

Multi ESD Surface Vertical (Integrated Inverter)

• Efficiency: IE3
• Energy Index: MEI≥0,4 for Multi 25/35; MEI≥0,4 for Multi 55

Multi VE Surface Vertical

• Type: Asynchronous, two poles
• Protection: IP 54
• Insulation: Class F
• Operation: Continuous
• Efficiency: IE2
• Energy Index: MEI≥0,4

Multi VS Surface Vertical

• Protection: IP55 class F
• Efficiency rate: IE3 (for all three-phase motors)
• Voltage: 230/400V 50HZ up to 3 kW; 400/690V 50HZ for power above 3 kW

Voltage Range (Integrated Inverter Models)

Multi ESD Surface Vertical

• Low voltage:
  • Disconnect at 180 V (M2)
  • Disconnect at 310 V (T2/T3)
  • Automatic reset: 195 V (M2)
  • Automatic reset: 335 V (T2/T3)
• High voltage:
  • Disconnect at 270 V (M2)
  • Disconnect at 485 V (T2/T3)
  • Automatic reset: 250 V (M2)
  • Automatic reset: 475 V (T2/T3)

Multi VS-ESD Surface Vertical

• M2-M3:
  • Low voltage disconnect at 180 V, automatic reset at 195 V
  • High voltage disconnect at 270 V, automatic reset at 250 V
• T2-T3 T4:
  • Low voltage disconnect at 310 V, automatic reset at 335 V
  • High voltage disconnect at 485 V, automatic reset at 475 V

---

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

Official datasheet (PDF)

Lenntech datasheet mirror