NG

Summary

Product identification

The Calpeda NG series consists of close-coupled self-priming shallow well jet pumps with a built-in ejector.

Available versions:

• NG: Pump casing and lantern bracket in cast iron.
• B-NG: Pump casing and lantern bracket in bronze (pumps supplied fully painted).
• NGM: Single-phase motor version.
• B-NGM: Bronze construction with single-phase motor.

Construction

These are close-coupled self-priming shallow well jet pumps featuring a built-in ejector.

• NG versions: Pump casing and lantern bracket are made of cast iron.
• B-NG versions: Pump casing and lantern bracket are made of bronze. All B-NG pumps are supplied fully painted.

Applications

• For drawing water out of a well.
• As pressure boosting pump for central water systems with low pressure (local specifications should be followed if increasing network pressure).
• For clean liquids or slightly dirty surface water.
• For garden use.
• For washing with a jet of water.

Operating limits

• Liquid temperature: up to 40 °C
• Ambient temperature: up to 40 °C
• Maximum permissible working pressure: up to 10 bar
• Duty: Continuous

Electrical

• Motor type: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm)
• NG (three-phase): 230/400 V ± 10%
• NGM (single-phase): 230 V ± 10%, with thermal protector
• Capacitor: Inside the terminal box (for single-phase models)
• Insulation class: F
• Protection: IP 54
• Efficiency: Classification scheme IE3 for three-phase motors from 0,75 kW
• Standards: Constructed in accordance with 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)
• Protection IP 55
• Special mechanical seal

Materials

Performance data

Performance characteristic curves and tabulated data are provided for a suction lift (Hs) of 1 m and a nominal speed (n) of approximately 2900 rpm. Detailed tables include flow rate (Q in m³/h and l/min), head (H in m), rated motor power output (P2 in kW and HP), maximum power input (P1 in kW), and current (A) for various NG and B-NG models.

See the official PDF for exact tabulated values and characteristic curves for specific models.

Mechanical / hydraulic

The pumps feature G 1 or G 1 1/2 connections depending on the model.

Weights:

• NG 3/A, B-NG 3/A: 18,4 kg
• NG 4/B, B-NG 4/B: 20,0 kg
• NG 5/A, B-NG 5E: 20,8 kg
• NG 6/A, B-NG 6E: 22,3 kg
• NG 7/B, B-NG 7/A: 29,2 kg to 33,4 kg (depending on specific variant)

See the official PDF for detailed dimensions (a1, a2, b, fM, g, h1, h2, H, m1, m2, m3, n1, n2, s, w) and connection sizes for each model.

Key features

• Robust: Mechanical structure of hydraulic parts is dimensioned to guarantee maximum resistance to mechanical stress.
• Self-priming: Hydraulic design allows the pump to self-prime even with high suction lifts or long suction pipe runs above the water level.
• Flexible: Option to choose between cast iron and bronze materials for hydraulic parts in contact with the pumped liquid, allowing selection for different types of liquids.

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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)

Lenntech datasheet mirror