NGX

Summary

Product identification

The NGX series are close-coupled self-priming shallow-well pumps with a built-in ejector, designed for domestic water supply. They feature a stainless steel casing and brass alloy impeller, with minimal use of plastic materials.

Applications

• For drawing water out of a well.
• For lifting water containing air or other gases.
• For increasing water pressure from flooded suction applications.
• As pressure boosting pump for central water systems with low pressure (follow local specifications if increasing network pressure).
• For garden use.
• For washing with a jet of water.

Operating limits

• Liquid temperature: 0 °C to +35 °C
• Ambient temperature: up to +40 °C
• Suction lift: up to 9 m
• Maximum permissible pressure in the pump casing: 8 bar
• Continuous duty

Electrical

• Motor type: 2-pole induction motor, 50 Hz (n ≈ 2800 rpm)
• Voltage:
  • NGX (three-phase): 230/400 V ± 10%
  • NGXM (single-phase): 230 V ± 10%, with thermal protector
• Capacitor: Inside the terminal box (for single-phase models)
• Insulation class: F
• Protection: IP 54
• Classification scheme: IE3 for three-phase motors from 0,75 kW
• Construction standards: EN 60034-1; EN 60034-30-1; EN 60335-1, EN 60335-2-41

Special features on request

• Other voltages
• Frequency 60 Hz (as per 60 Hz data sheet)

Mechanical / hydraulic

Construction materials

• Pump casing: Cr-Ni steel 1.4301 EN 10088 (AISI 304)
• Casing cover: Cr-Ni steel 1.4301 EN 10088 (AISI 304)
• Impeller: Brass P-Cu Zn 40 Pb 2 UNI 5705 (PPO-GF20 (Noryl) for NGX 2/80, 3/100, 4/110)
• Wear ring impeller-diffuser: Cr-Ni steel 1.4301 EN 10088 (AISI 304)
• Diffuser: PPO-GF20 (Noryl)
• Ejector: PPO-GF20 (Noryl)
• Shaft: Chrome steel 1.4104 EN 10088 (AISI 430) (Cr-Ni steel 1.4305 EN 10088 (AISI 303) for NGX 5,6)
• Mechanical seal: Carbon - Ceramic - NBR

Connections

• G 1 DN 25 (Øi 28 mm): NGX 4/16, NGX 4/18, NGX 4/22, NGX 6.
• G 1 1/4 DN 32 (Øi 36 mm): NGX 2/80, NGX 3/100, NGX 4/110.

Features

• Exclusive diffuser design with flow control device for compact construction, fast self-priming, and low noise.
• Robust design for temporary abnormal operating conditions.
• Compact size for installation in restricted spaces and easier retrofit.
• Fast air evacuation reduces risk of air-pockets at the mechanical seal.
• Capable of lifting water from depths of 9 m in less than 4 minutes.
• Low noise due to reduced turbulence and velocity.

Performance

Detailed characteristic curves (H-Q) for various models and suction lifts, as well as self-priming capability curves (self-priming time vs. suction lift), are available in the official PDF. Performance tables listing P1 (Max. power input), P2 (Rated motor power output), current (A) at 230V and 400V, and head (H) at various flow rates (Q) are also provided for specific models.

Dimensions and weights

Detailed dimensions (L, H, w, h1, h2, etc.) and net weights (kg) for various NGX and NGXM models are provided in tabulated format with corresponding diagrams in the official PDF.

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

Official datasheet (PDF)

Lenntech datasheet mirror