Nocchi-VLRI

Summary

Product Identification

The Nocchi VLRI/X series comprises vertical multi-stage centrifugal pumps with in-line suction and delivery ports, directly coupled with an electric motor. These pumps are non self-priming.

• VLRI models: Constructed entirely in AISI 304 Stainless Steel.
• VLRX models: Constructed entirely in AISI 316 Stainless Steel, suitable for seawater and special applications.

The identification symbol follows the format: VLR [Material] [Rated flow rate in m³/h] [Number of stages X 10] [Flange type] [Phase].

• Material: I = AISI 304, X = AISI 316
• Flange type: F = round “in line“ flange, A = oval “in line“ flange, V = with connectors for VICTAULIC joints
• Phase: T = Three phase, M = Single phase

Applications

• Water supply
• Pressure increase system
• Irrigation
• High pressure washing
• Fire fighting systems
• Boiler supply
• Liquid transfer

Operating Limits

• Liquid Temperature:
  • VLRI/X 2B, 4, 8, 16: from -15 to +120°C
  • VLRX 33: from -20 to +120°C
  • VLRX 46, 66, 92: from -30 to +120°C
• Max. Operating Pressure (including suction head):
  • VLRI/X 2B, 4: 25 bar (max temp 40°C), 21 bar (max temp 120°C)
  • VLRI/X 8: 25 bar (max temp 40°C), 23 bar (max temp 120°C)
  • VLRI/X 16/30-2 - VLRI/X 16/160: 25 bar (max temp 85°C), 23 bar (max temp 120°C)
  • VLRX 33: 16 bar up to VLRX 33-60/2, 25 bar up to VLRX 33-130/1
  • VLRX 46: 16 bar up to VLRX 46-50, 25 bar up to VLRX 46-90, 40 bar up to VLRX 46-130/2
  • VLRX 66: 16 bar up to VLRX 66-50, 25 bar up to VLRX 66-80
  • VLRX 92: 16 bar up to VLRX 92-40, 25 bar up to VLRX 92-70/2
• Minimum Suction Head: NPSH plus safety margin of 0.5 m
• Maximum Ambient Temperature (Motor): 40°C

Electrical

• Motor Type: Electric asynchronous motor with closed casing and external ventilation.
• Dimensions: Main dimensions are in line with DIN and IEC standards.
• Construction Design:
  • Up to 4.0 kW: V18
  • From 5.5 kW: V1
• Insulation Class: F
• Protection Rating: IP 55
• Rotation Speed: 2900 rpm
• Bearings: Oversized for optimal load support.
• Performance Tables: Detailed electrical parameters (Volt, In (A), μF) are available in the performance tables for each model. See the official PDF for exact tabulated values.

Mechanical / Hydraulic

• Materials of Construction:
  • Support base: Cast iron EN GJL 200
  • Pump body:
    • VLRI 2B - 16: Stainless steel X5CrNi18-10 (AISI 304)
    • VLRX 2B - 16: Stainless steel X2CrNiMo17-12-3 (AISI 316)
    • VLRX 33 - 92: Stainless steel GX5CrNiMo19-11-2 (AISI 316 cast)
  • Gasket case:
    • VLRI 2B - 16: Stainless steel X5CrNi18-10 (AISI 304)
    • VLRX 2B - 16: Stainless steel X2CrNiMo17-12-3 (AISI 316)
    • VLRX 33 - 92: Stainless steel GX5CrNiMo19-11-2 (AISI 316 cast)
  • Motor housing: Cast iron EN GJL 200
  • Motor coupling: Cast iron EN GJS 400 (VLRI/X 2B - 16), Cast iron EN GJL 200 (VLRX 33 - 92)
  • Casing:
    • VLRI 2B - 16: Stainless steel X5CrNi18-10 (AISI 304)
    • VLRX 2B - 16: Stainless steel X2CrNiMo17-12-3 (AISI 316)
    • VLRX 33 - 92: Stainless steel X2CrNiMo17-12-2 (AISI 316L)
  • Impeller:
    • VLRI 2B - 16: Stainless steel X5CrNi18-10 (AISI 304)
    • VLRX 2B - 16, 33 - 92: Stainless steel X2CrNiMo17-12-3 (AISI 316)
    • VLRX 33 - 92: Stainless steel X2CrNiMo17-12-2 (AISI 316L)
  • Diffuser:
    • VLRI 2B - 16: Stainless steel X5CrNi18-10 (AISI 304)
    • VLRX 2B - 16, 33 - 92: Stainless steel X2CrNiMo17-12-3 (AISI 316)
    • VLRX 33 - 92: Stainless steel X2CrNiMo17-12-2 (AISI 316L)
  • Rotary gasket: Silicon carbide
  • Fixed gasket: Carbon
  • Shaft: Stainless steel X2CrNiMo17-12-3 (AISI 316) (VLRI/X 2B - 16), Stainless steel X2CrNiMoN22-5-3 (UNS S 31803) (VLRX 33 - 92)
  • Seals: EPDM
• Port Configurations:
  • F (Round Flanges): In-line ports with round flanges. Counterflanges optional.
    • VLRI/X 2B, 4: 1” 1/4 (DN32). Optional counterflanges 1” 1/4 GAS.
    • VLRI/X 8: 1” 1/4 (DN40). Optional counterflanges 1” 1/2 GAS.
    • VLRI/X 16: 2” (DN50). Optional counterflanges 2” GAS.
    • VLRX 33: DN65. PN 16 up to VLRX 33-60/2; PN25 from VLRX 33-60 to 33-10; PN40 from VLRX 33-110/2 to 33-130/1.
    • VLRX 46: DN80. PN16 (VLR46-10/1, VLR 46-50); PN25 from VLR 46-60/2 to 46-90; PN 40 from VLR 46-100 to 46-130/2.
    • VLRX 66: DN 100. PN 16 from VLR 66-10/1 to 66-80. PN 25 from VLR 66-60 to 66-80.
    • VLRX 92: DN100. PN16 from VLRX 92-10/2 to 92-40; PN25 from VLRX 92-50/2 to 92-70/2.
  • A (Oval Flanges): In-line ports with oval flanges, complete with threaded counterflange. Optional from VLRI/X 2B-150 and VLRI/X 4-160.
  • V (Victaulic Joints): In-line ports with connectors for VICTAULIC joints. Optional only for VLRX models.
• Hydraulic Performance: Performance tables and curves detailing head (m.c.a./m.w.c.) at various flow rates (L/min, m³/h) are provided for VLRI/X 2B, 4, 8, 16 and VLRX 33, 46, 66, 92 models. Head and NPSH values are valid with water density ρ = 1.0 kg/dm³ at 20°C. See the official PDF for exact tabulated values.
• Overall Dimensions and Weights: Detailed tables for dimensions (mm) and net weight (kg) are provided for each model series. 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 complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

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