MXV

Summary

Product Identification

The Calpeda MXV and MXV EI series are Vertical Multi-Stage In-Line Pumps. They feature suction and delivery connections of the same diameter, arranged along the same axis.

Key construction features include:

• Corrosion-resistant bearing sleeves lubricated by the pumped liquid.
• Mechanical seal removal without dismantling the motor (for MXV 50, MXV 100 with motors exceeding 4 kW).
• A pump with thrust bearing and sleeve coupling for use with any standard motor of IM V1 construction.
• MXV EI models are available with an integrated I-MAT frequency converter for variable-speed operation.

Applications

These pumps are suitable for:

• Water supply systems.
• Clean, non-explosive liquids, free from solid, filamentary, or abrasive matter (with adaptation of sealing materials available on request).
• Universal use in civil and industrial settings, including pressure-boosting systems, fire-extinguishing systems, high-pressure washing plants, irrigation, agricultural uses, and sport installations.

Operating Limits

• Liquid Temperature: From -15 °C to +110 °C (up to +120 °C for MXV 50).
• Operating Environment Temperature: Up to 40 °C.
• Maximum Permissible Pressure in Pump Casing: 25 bar (16 bar for pumps with oval flanges).
• NPSH: A safety margin of + 0.5 m is recommended for the NPSH value.
• Liquid Properties for Performance Data: Head and power values are valid for liquids with a density ρ = 1.0 kg/dm³ and kinematic viscosity ν = max 20 mm²/sec.

Electrical

Standard Motor (MXV Series)

• Type: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm).
• Construction: IM V1 (EN 60034-7).
• Compatibility: Suitable for operation with a frequency converter.
• Efficiency: Classification scheme IE3 for three-phase motors.
• Insulation Class: F.
• Protection: IP 55.
• Rated Voltage (three-phase):
  • Up to 3 kW: 230/400 V
  • From 4 kW: 400/690 V
• Variants (on request): Single-phase motor 230 V (up to 2.2 kW), other voltage ratings, frequency 60 Hz.

With Frequency Converter (MXV EI Series)

• Power Range: From 0.75 kW up to 22 kW.
• System: Equipped with an I-MAT frequency converter installed on board, creating a compact and efficient variable-speed system.
• Control Range: From 1750 to 2900 rpm (2-pole).
• Factory Programmed: Pumps are equipped with transducers suitable for operation and are factory programmed.
• Protections:
  • Dry running.
  • Operations with closed connection ports.
  • System leakages.
  • Overcurrent in the motor.
  • Overvoltage and undervoltage of the power supply.
  • Current unbalances between phases.
• Operating Modes:
  • Constant pressure mode (with pressure sensor).
  • Proportional pressure mode (with pressure sensor).
  • Constant flow mode (with flow meter).
  • Fixed speed mode (with setting of the speed preferential rotation).
  • Constant temperature mode (with temperature transducer).

Mechanical / Hydraulic

Materials (Wetted Parts)

For MXV 25, 32, 40, 50:

• Flange, External jacket, Suction casing, Delivery casing, Stage casing, Impeller, Lower cover, Upper cover, Spacer sleeve: Stainless Steel 1.4301 EN 10088 (AISI 304).
• Pump shaft: Stainless Steel 1.4305 EN 10088 (AISI 303).
• Plug: Stainless Steel 1.4305 EN 10088 (AISI 303) (for MXV 50: AISI 304).
• Bearing sleeve: Corrosion-resistant, cemented carbide.
• Bearing in stage casing: Ceramic alumina.
• Mechanical seal: ISO 3069 - KU, Hard metal/Carbon/EPDM.
• Wear ring: PPS (PTFE for MXV 40).
• O-rings: NBR (EPDM for MXV 50).

For MXV 65, 80, 100:

• Pump casing, Upper cover: Cast iron GJL 250 EN 1561.
• External jacket, Stage casing, Impeller, Spacer sleeve: Stainless Steel 1.4301 EN 10088 (AISI 304).
• Pump shaft: Stainless Steel (AISI 303) (AISI 431 for MXV 100).
• Plug: Stainless Steel (AISI 303) (AISI 304 for MXV 100).
• Bearing sleeve: Corrosion-resistant, cemented carbide.
• Bearing in stage casing: Ceramic alumina (Corrosion-resistant, cemented carbide for MXV 100).
• Mechanical seal: ISO 3069 - KU, Hard metal/Carbon/EPDM.
• Wear ring: PTFE.
• O-rings: NBR (EPDM for MXV 100).

Material Variants (to be specified when ordering):

• Counter-flanges in chrome-nickel steel.
• O-rings FPM.
• Other mechanical seal options.
• Full chrome-nickel stainless steel AISI 304 for all parts in contact with the liquid, including wet-end covers (MXV L version).
• Internal parts in chrome-nickel stainless steel AISI 304 with pump casing and upper cover in cast iron.

Connections

• Threaded Ports (G): For MXV 25, 32, 40.
• Flanged Ports (F).
• Oval Flange Ports (O): For MXV 50.
• Pipe Connection Options: Pipes screwed into ports, pipes with union couplings (locally available), or pipes with counter-flanges.

Installation

• Vertical Installation: Standard.
• Horizontal Installation: Available as variants (H1: suction on left, delivery on right; H2: suction on right, delivery on left). Support feet for horizontal installation are available for MXV 65, 80, 100.

Direction of Rotation (as seen from the motor)

• MXV 25, 32, 40, 50: Clockwise.
• MXV 65, 80: Anticlockwise.
• MXV 100: Clockwise.

Compliance

The electropumps MXV series comply with European Regulation no. 547/2012.

Performance, Dimensions, and Weights

The extracted text contains detailed performance curves (Head vs. Flow, Power, NPSH) and tables for various models, including dimensions and weights. These are presented graphically or in unformatted tables in the original document.

See the official PDF for exact tabulated values.

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

Official datasheet (PDF)

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