New Filter Driers for CO2 systems by Castel

By Clémence Girard-Reydet, Oct 05, 2012, 17:33 1 minute reading

Based on its experience with fluorocarbon fluids Castel, Italian manufacturer of air-conditioning and refrigeration components, has developed a new range of filter driers with replaceable solid core specifically designed and tested to operate on systems that use carbon dioxide. These new filters types are suitable for application in sub-critical cycles or at a maximum working pressures of 62 bars.

Castel’s filter driers aim at improving filtering of the refrigerant on the low-pressure side of the system to ensure the best protection possible to the compressor. System cleanliness is ensured by micro filtering cores, which filter out impurities derived from the manufacture and assembly of the refrigerating system.

44 type filters’ basic technical specifications

  • Maximum working pressure (PS) 62 bars
  • Steel body and steel solder connections (steel bar EN 10025 S355JR)
  • CE approved and stamped
  • Filters type 4420 include zinc plated wire cloths and a filtering baffle form the block, which features a large surface, with controlled porosity. The block can stop solid particles up to 20 microns. At the two ends, soft felt gaskets ensure perfect sealing with the plastic cups.
  • Filters 4411 and 4421, with “C” suffix, are equipped with a 1/4” taper threaded cover connection (NPT) and access fitting with valve core G9150/R05.

Castel at Chillventa

The manufacturer will be exhibiting at Chillventa 2012, the International Trade Fair for Refrigeration, Air Conditioning, 
Ventilation and Heat Pumps to be held next week in Nuremberg, Germany.

Visit Castel’s booth in Hall 6, booth 229. Other products suitable with CO2 systems in subcritical cycles from Castel will be in display such as:
  • Ball valves
  • Liquid indicators
  • Filter driers with replaceable solid core
  • Check valves
  • Safety valves

About Castel

Castel is active in the refrigeration and air conditioning fields in more than 75 countries. Castel’s commitment towards the environment has led it to offer innovative CO2 products that satisfy its customers while respecting the environment. Castel offers innovative products for CO2 refrigeration and air conditioning such as ball valves, liquid indicators, filer driers, check valves and safety valves.

Contact information

If you would like to contact Castel for any enquiries, you may send a request to Antonio Sepe directly.


By Clémence Girard-Reydet

Oct 05, 2012, 17:33

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