Nocchi A2L-A4L

Summary

Product Identification

The NOCCHI A2L - A4L are "IN LINE" MONOBLOC PUMPS, featuring a single impeller centrifugal pump coupled via housing to an asynchronous motor in closed construction with external ventilation. They include a mechanical type gasket on the shaft and are of single design.

• Version A2L: 2-pole motor
• Version A4L: 4-pole motor

Applications

These pumps are suitable for:

• Central heating and air conditioning systems
• Collection of water from lakes, rivers, wells
• Gravity and sprinkler irrigation systems
• Water supply systems for communities, homes, etc.
• Autoclaves
• Industrial facilities
• Hygiene facility water distribution

Operating Limits

• Maximum operating pressure: 10 bar
• Maximum conveyed liquid temperature: + 130 °C
• Minimum conveyed liquid temperature: - 10 °C
• Maximum ambient temperature: + 40 °C (request checks for higher values)
• Maximum viscosity of conveyed liquid: 5 °E
• Maximum manometric suction height: 2 m.c.a. (applies to continuous duty and clean water with specific weight = 1000 Kg / m³)

Feed Water

• Clean water (specific weight = 1000 Kg / m³)

Electrical

• Protection rating: IP 55
• Standard voltage: 50Hz; V 220 / 400 (± 10%)
• Insulation class: F
• Motor: To standards C.E.I.

Mechanical / Hydraulic

• Pump: ISO 2548 class C ann. B

Materials

• Mechanical gasket: Silicon carbide/Silicon carbide O-Ring EPDM
• Pump body: Cast iron EN-GJL 200 (ex G20)
• Impeller: Cast iron EN-GJL 200 (ex G20)
• Shaft: Stainless steel AISI 420
• Shield, housing, cover: Cast iron EN-GJL 200 (ex G20)

On Request

• Version with brass impeller
• Version with condensate drain holes to ensure reliable pump operation in systems with cold water

Performance Data

Performance tables are provided for various models within the A2L and A4L series, categorized by nominal diameter (DN) 40, 50, 65, 80, 100, 125, and 150. These tables detail:

• Model code
• Motor output (kW, HP)
• Amperage (for 3x400 V, 3x230 V, or 380/415 V)
• Rotational speed (n min⁻¹)
• Flow rate (Q L/min, m³/h)
• Manometric height (m.c.a. / m.w.c.)

See the official PDF for exact tabulated values.

Overall Dimensions and Weights

Detailed tables provide dimensions (A, B, C, D, E, F, G, H, I, L in mm) and weight (kg) for each model, along with DNa, DNm, and flange specifications (e.g., 40 PN10, 50 PN10, 65 PN10, 80 PN10, 100 PN10, 125 PN16, 150 PN16).

See the official PDF for exact tabulated values.

Component List

The following components are identified:

1. Pump body
2. Gland cover
3. Housing - Cover
4. Impeller
5. Deflector
6. Rotary nut
7. Mechanical gasket
8. Flat seal
9. Drain plug
10. Bleed plug
11. Rubber washer
12. Hex nut
13. Tab
14. Washer
15. Motor
16. Screw

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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)

Lenntech datasheet mirror