SANHA® now also offers copper tubes in inch dimensions. Depending on the piping system, these tubes are available both as flexible coils (soft) and as rigid versions (in 5 m lengths). They are suitable for use in numerous refrigeration and air conditioning applications – especially with CO₂.

Copper tubes for high-pressure solder fittings

The copper tubes can be used in combination with our RefHP® fittings made of high-strength copper-iron (CuFe2P). The system is designed for operating pressures up to 130 bar and temperatures from -196 °C to +150 °C, meeting all the requirements of transcritical refrigeration systems. In particular, CO₂ systems (R744) are increasingly being installed in the refrigeration sector as a natural alternative to conventional refrigerants. With RefHP® and the matching tubes, installers have a reliable and time-saving solution.

High-safety press fittings up to 48 bar

In addition to soldered joints, the ACR Copper Press system is gaining importance. Press connections stand out for their excellent tightness and long-lasting resistance to the high pressures occurring in refrigeration circuits. The ACR Copper Press system is available in many dimensions from 1/4" to 1 3/8", ensuring the right size for almost any application. ACR Copper Press has also proven its worth in renovation projects, as installation times – and therefore costs – are significantly reduced compared to soldering and flaring. Thus, the system offers a modern and future-proof alternative for installations such as heat pumps.

With the new copper tubes, operators and refrigeration companies now have a secure and future-proof solution that ensures maximum safety, efficiency, and flexibility.

Nice to know

CO₂ is a high-pressure refrigerant. During operation, pressures above 100 bar can be reached. The triple point and the critical point are very close to the operating range. In fact, the critical point, which lies at 31 °C and 73.8 bar, is exceeded at ambient temperatures as low as 26 °C. This is referred to as transcritical operation of the refrigeration system.
Since CO₂ has a GWP of only 1, it is significantly more environmentally friendly and is therefore increasingly used in commercial refrigeration, data centers, supermarkets, food storage, and many other fields. Moreover, CO₂ is obtained as a by-product from various industries, making it very cost-efficient.

Carbon dioxide (CO₂) is a chemical compound of oxygen and carbon. It is a non-flammable, odorless, and colorless gas, soluble in water. For this reason, it is often used in beverages, where it is commonly called “carbonic acid”. CO₂ is also a natural and important component of the air. It is produced during the combustion of carbon-containing substances as well as in the metabolism of living organisms through cellular respiration. In addition to its cost-effectiveness and sustainability, CO₂ is characterized by low viscosity, a reduced compression ratio (20–50% less than HFCs and ammonia), and low susceptibility to pressure losses.