HVU / HV Multistage Vertical Pumps

Summary

Product Identification

Caprari HVU-HV series are Vertical Multistage Electric Pumps, designed for 50 Hz operation with 2 poles.

The pump coding system includes:

• Series: HV, HVU
• Seal: /1, /2
• Pump model size: 18, 25, 35, 50, 65, 80
• Derived: /3, /4, /5, /6
• Number of stages: A, B, C, D, E, ...
• Impeller reduction: T, A, D, F, L, M, ...
• Motor type: V3 (IE3 Three-phase), V4 (IE4 Three-phase)
• Nominal power in kW: 0055, 0075, 0110, ...
• Number of poles: 2
• Supply voltage code: 2
• Motor generational code: 1
• Constructional features of motor: +V3, +V4
• Frequency: 50

Execution on Demand:

• HV ... L / ...: Delivery port pointing towards right (viewed from suction side).
• HV ... M / ...: Delivery port pointing towards left (viewed from suction side).
• HV ... N / ...: Delivery port overlying suction port.
• Other configurations are available on request.

Operating Limits

Specifications are based on cold water (15 °C) at 1 bar atmospheric pressure, guaranteed according to UNI/ISO 9906 Grade 2B. Grade 1B performance can be guaranteed on demand. The pumps are designed for liquids with a volume mass of 1 kg/dm³ and kinematic viscosity not exceeding 1 mm²/s.

• Maximum content of solid substances (slime grain size hardness): 20 g/m³
• Maximum working pressure (max. suction pressure of 16 bar + max. pump manometric head) at 40 °C liquid temperature:
  • HVU18÷50: 30 bar
  • HV65: 24 bar (or 24/28 bar with high pressure mechanical seal)
  • HV80: 22 bar (or 20/25 bar with high pressure mechanical seal)
• Maximum working pressure (max. suction pressure of 12 bar + max. pump manometric head) at max. liquid temperature:
  • HVU18÷50: 24 bar
  • HV65: 24 bar (or 16/19 bar with high pressure mechanical seal)
  • HV80: 22 bar (or 14/17 bar with high pressure mechanical seal)
• Maximum temperature of pumped liquid:
  • HVU18÷50: 70/90 °C (90 °C with special gland packing for high temperature)
  • HV65-80: 90 °C (with special gland packing for high temperature)
• Maximum operating time with closed discharge and liquid at 40 °C:
  • HVU18÷50: 6 min
  • HV65: 5 min
  • HV80: 4 min
• Maximum operating time with closed discharge and maximum raised liquid temperature:
  • HVU18÷50: 4 min
  • HV65: 4 min
  • HV80: 3 min
• Wet moment of inertia J: See the official PDF for exact tabulated values (e.g., 0.00911 kg m² for HVU18 models).

Electrical

• Frequency: 50 Hz, Multi-frequency compatible
• Poles: 2
• Motor power: Ranges from 5.5 kW to 90 kW
• Maximum number of starts/hour: 3 (equally distributed)
• Voltage variation: ± 10% (at 400V)
• Dynamic momentum J: See the official PDF for exact tabulated values (e.g., 0.014 kg m² for 5.5 kW motor).
• Voltage: Eurovoltage
• Efficiency class: IE3 or IE4 (IE4 motors comply with EU REGULATION 2019/1781)
• IP rating: 55
• VSD (inverter): Compatible
• Bearings: Electric motors with C3 clearance bearings.

Mechanical / Hydraulic

Construction and Materials:

Screws and nuts are made of stainless steel.

Flange (UNI EN 1092):

• DN (mm): 40, 50, 65, 80, 100
• PN (bar): 16, 25
• Holes No: 4 or 8
• Holes ø: 18 mm or M16
• Dimensions (mm): Various ø u, ø v, p, q values are tabulated. See the official PDF for exact tabulated values.

Performance Data

Detailed operating data, including Capacity (l/m, m³/h, l/s), Total manometric head (m), NPSH (m), and Motor power (kW, HP) for various models (HVU18, HVU25, HVU35, HVU50, HV65, HV80), are provided in extensive tables and performance curves within the official PDF.

Overall Dimensions and Weights

Overall dimensions (A-S in mm) and weights (kg) for all models are provided in detailed tables in the official PDF. Values are indicative and depend on the motor type installed.

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

Official datasheet (PDF)

Lenntech datasheet mirror