MXV-B

Summary

Product identification

• Calpeda MXV-B series: Vertical Multi-Stage Close Coupled Pumps.
• MXV-B: Three-phase motor.
• MXV-BM: Single-phase motor.
• MXV-B EI: Pumps equipped with an I-MAT frequency converter for variable-speed operation.

Applications

• For water supply systems.
• For clean non-explosive liquids, without solid, filamentary or abrasive matter and non-aggressive for stainless steel (with adaptation of sealing materials on request).
• Universal pump for civil and industrial use, for pressure-boosting systems, fire-extinguishing systems, high-pressure washing plants, irrigation, agricultural uses and sport installations.

Operating limits

• Liquid temperature: from -15 °C to +90 °C.
• Operating environment temperature: up to 40 °C.
• Maximum permissible pressure in pump casing: 16 bar.
• Liquid properties for performance data: Density ρ = 1.0 kg/dm³ and kinematic viscosity ν = max 20 mm²/sec.
• NPSH: A safety margin of + 0.5 m is recommended for the NPSH value.

Mechanical / hydraulic

• Construction: Vertical multi-stage close coupled pumps with suction and delivery connections of the same diameter and arranged along the same axis (in-line).
• Wetted Parts Materials:
  • External jacket, Suction casing, Delivery casing, Stage casing, Impeller, Lower cover, Upper cover, Spacer sleeve: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
  • Pump shaft, Plug: Chrome-nickel steel 1.4305 EN 10088 (AISI 303)
  • Mechanical seal: ISO 3069 - KU, Ceramic alumina/Carbon/EPDM
  • Wear ring: PTFE
  • O-ring: NBR
• Connections: Threaded connections are available in sizes G 1, G 1 1/4, G 1 1/2, and G 2, depending on the model series.
• Special features on request:
  • Protection IP 55.
  • Special mechanical seal.
  • Pump casing seal rings in FPM.
  • Flanges to screw, in chrome-nickel steel.
  • Higher or lower liquid or ambient temperatures.
• Dimensions and Weights: See the official PDF for exact tabulated values.
• Performance Curves: See the official PDF for detailed performance curves.

Electrical

• Motor Type: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm).
• MXV-B (Three-phase):
  • Voltage: 230/400 V ± 10% (up to 3 kW); 400/690 V ± 10% (from 3.7 to 7.5 kW).
  • Classification scheme IE3 for motors from 0.75 kW.
• MXV-BM (Single-phase):
  • Voltage: 230 V ± 10%.
  • Includes thermal protector and capacitor inside the terminal box.
• General Motor Specifications:
  • Insulation class F.
  • Protection IP 54 (IP 55 on request).
  • Motor suitable for operation with frequency converter from 1.1 kW (up to 0.75 kW on request).
  • Constructed in accordance with: EN 60034-1, EN 60034-30-1, EN 60335-1, EN 60335-2-41.
• MXV-B EI (with I-MAT Frequency Converter):
  • Rated motor power output: from 0.75 kW to 7.5 kW.
  • Control range: from 1750 to 2900 rpm (2-pole).
  • Equipped with transducers and factory-programmed.
  • Protections: Against 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, Proportional pressure, Constant flow, Fixed speed, Constant temperature.
• Special features on request:
  • Other voltages.
  • Frequency 60 Hz.

Compliance

• The electropumps MXV-B 25, 32, 40 series comply with European Regulation no. 547/2012.
• The MXV-B 50 series cannot be sold in the EU.

Features

• Wider Range of Application: All parts that come into contact with the liquid, including wet-end covers, are in chrome-nickel stainless steel, with corrosion-resistant seal rings and guide ring.
• Low Cost Installation: Vertical construction with reduced pump height for installation in small spaces. In-line connections simplify piping layout, allowing pump insertion in straight pipe-lines. Disassembly, inspection or cleaning of internal parts without removal of piping.
• Robust and Reliable: Suction and discharge nozzles arranged in-line absorb piping forces without creating distorting loads. Compact and robust lantern brackets maintain alignment between rotating and fixed parts, reducing vibration. The upper cover design prevents air entrapment around the mechanical seal.
• Low-Noise Operation: Water filled shroud around the stages and thick external walls work together for low-noise operation.
• MXV-B EI Specific Advantages: Energy saving, compact design, easy to use, programmable to suit system requirements, reliability.

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)

Lenntech datasheet mirror