Overview

This document is a technical catalogue for the RNL series of centrifugal pumps manufactured by BOMBAS IDEAL, S.A. It provides detailed specifications, design features, applications, materials, dimensional data, and part lists for the pumps operating at different speeds (1450 and 2900 RPM).

1. Technical Specifications

• Suction and Discharge Diameter: 40 - 200 mm
• Impeller Diameter: 125 - 450 mm
• Capacity (Flow Rate): 2.5 - 500 m³/h
• Total Head: 2.5 - 95 m
• Speed: 1450 - 2900 RPM
• Motor Power: 0.12 - 90 kW
• Operating Temperature Range: -20 to +110 °C
• Maximum Working Pressure: 16 Bar (Groups A and B), 10 Bar (Group C)

2. Applications

• Water supply and recirculation systems
• Booster (pressure) units
• Heating and cooling systems
• Industrial liquid transfer
• Air conditioning systems

3. Design and Construction Features

• Suction and discharge flanges are identical and aligned on the same axis (in-line design).
• Single-stage centrifugal pumps conforming to DIN 24255 flow rate standards.
• Direct coupling to standard electric motors compliant with VDI and IEC frame sizes.
• Pump shaft supported by motor bearings, simplifying design and maintenance.
• Unbalanced mechanical seals made of ceramic-graphite, cooled by the pumped liquid.

4. Materials

The catalogue lists standard and optional materials for key pump components:

• Casing and Wear Rings: Cast iron (G), Bronze (RG5), Stainless steels (AISI 304, 316, 420)
• Impeller and Shaft: Various grades including stainless steel options
• Seal Cover and Mechanical Seal: Standard and optional materials per DIN 24960

5. Performance Data

The document includes detailed performance tables for multiple pump models within the RNL series, categorized by impeller diameter and rotational speed (2900 RPM and 1450 RPM). These tables provide key parameters such as:

• Head (Hm)
• Net Positive Suction Head (NPSH)
• Power (kW)
• Flow rate (Q) in m³/h

Performance data is grouped according to shaft form and pump design numbers (Design No. 1, 2, 3), allowing selection based on application requirements.

6. Dimensional Data

Overall dimensions are provided for pumps with suction and discharge flanges conforming to PN-16 DIN 2533 standards. Dimensions vary depending on the motor manufacturer. The document notes correct mounting positions identified as groups A, B, and C, corresponding to performance areas.

7. Parts List and Exploded View

A comprehensive parts list identifies all major components with reference numbers, including:

• Volute casing
• Base plate and motor adapter
• Wear rings
• Mechanical seal covers and mechanical seal
• Impeller, shaft, and impeller nut
• Coupling and fasteners
• O-rings and spacers
• Electric motor

Optional parts are clearly marked.

8. Manufacturer's Notes and Contact Information

BOMBAS IDEAL, S.A. reserves the right to modify specifications and dimensions without prior notice. The document includes contact details for the head office and regional offices in Spain, along with website and email information.

Critical Information Summary

• Ensure pump selection matches required flow rate, head, and operating conditions within specified ranges.
• Verify compatibility with motor standards (VDI, IEC) and flange dimensions (PN-16 DIN 2533).
• Consider material options based on fluid characteristics and temperature.
• Mechanical seals are unbalanced and rely on pumped liquid for cooling; ensure proper installation and maintenance.
• Performance data tables must be consulted for precise pump sizing and power requirements.