Lombarda Raccordi copper fittings for CO₂: high performance and certified safety

The growing demand for sustainable solutions in the refrigeration industry has led to a profound transformation in the materials and technologies employed. In particular, the use of CO₂ (R744) as a natural refrigerant has forced manufacturers to develop components capable of withstanding significantly higher operating pressures than traditional gases.

In this context , Lombarda Raccordi's copper fittings for CO₂ fit in, a product designed to guarantee maximum mechanical resistance , operational safety and durability, even in the most severe conditions.

Copper-iron alloy fittings: stability and resistance for the refrigeration of the future.

The copper-iron alloy (CuFe2P) used for these fittings ensures high mechanical strength, dimensional stability, and excellent corrosion resistance. These characteristics make it particularly suitable for use in CO₂ refrigeration circuits, including transcritical systems, where pressures can reach up to 130 bar and temperature variations are frequent.

The fittings are designed to maintain constant performance over a wide temperature range (from -196°C to +150°C), ensuring reliability and operational continuity over time.

Thanks to these characteristics, the fittings are particularly suitable for transcritical CO₂ systems, where joint reliability and resistance to thermomechanical fatigue become essential requirements.

Compliance, testing, and performance: the certified excellence of Lombarda Raccordi

The CO₂ fittings are made in compliance with the dimensions and tolerances for the joints required by the current regulation EN 14276-1 Annex B, for use with pipes compliant with the EN 378-2 and EN 14276-2 standards.

The range covers sizes from 3/8” to 2.1/8” , with transitional fittings available from inches to millimetres, for greater design flexibility.

The mechanical characteristics of the material and the laboratory tests carried out demonstrate the ability of the fittings to withstand high stresses without deformations or micro-cracks , guaranteeing a perfect seal over time.

Quick installation and clean connections: practical advantages of the CuFe2P alloy

In addition to the material's strength, CuFe2P alloy fittings are distinguished by their ease of brazing . Lombarda Raccordi recommends the use of soldering alloys with a silver content ≥ 5% and the use of an FH10 type pickling agent to ensure a clean, uniform, and vibration-resistant joint.

The absence of toxic elements and low installation costs make this solution ideal not only from a technical point of view, but also from an economic and environmental one.

Lombarda Raccordi: innovation and quality for sustainable refrigeration

Copper-iron alloy fittings for CO₂ are among the solutions selected by Lombarda Raccordi , a Bergamo-based company active since 1979 and a point of reference in the supply of components for HVAC/R systems.

Thanks to a rigorous UNI EN ISO 9001 certified quality system and a continuous commitment to research into innovative materials, the company today offers a complete range of high pressure fittings capable of responding to the new challenges of sustainable refrigeration.