Henry Technologies, a leading manufacturer of components for the refrigeration and air conditioning industry, is adding a new pressure relief valves (PRVs) to the R744 database. The valves can help minimise system refrigerant loss by re-seating within 15% of the set opening pressure.
The new PRV range is suitable for use in high pressure systems, such as those using CO2 as a refrigerant. The relief valves are designed to rapidly and safely reduce the system pressure if a dangerous level of overpressure occurs, for example due to an unexpected shut-down or fire scenario.
A key feature of the valve is that it is EN ISO 4126 compliant, which stipulates that, following a discharge situation, the valve will close within 15% of the set pressure; ensuring that a minimal amount of refrigerant is lost.
The PRV range was developed in close collaboration with the University of Strathclyde, using the latest engineering analysis and simulation tools alongside in-house testing. The relief valves are tested and certified in accordance with the requirements of EN ISO 4126 pop, blowdown and reseat performance specifications.
To aid in the correct selection of a PRV, Henry Technologies has produced a technical guidance note.
Basic specifications
Since 2004, Henry Technologies, UK has been a provider of thousands of products for CO2 sub-critical installations across Europe, the USA and most recently South Africa. Henry Technologies’ catalogue includes flow control products, compressor protective devices and heat transfer products. The company also has a number of transcritical products including oil separators, which have been successfully installed during recent years.
A key feature of the valve is that it is EN ISO 4126 compliant, which stipulates that, following a discharge situation, the valve will close within 15% of the set pressure; ensuring that a minimal amount of refrigerant is lost.
The PRV range was developed in close collaboration with the University of Strathclyde, using the latest engineering analysis and simulation tools alongside in-house testing. The relief valves are tested and certified in accordance with the requirements of EN ISO 4126 pop, blowdown and reseat performance specifications.
To aid in the correct selection of a PRV, Henry Technologies has produced a technical guidance note.
Basic specifications
- Range of pressure settings from 10.3 bar to 46.0 bar
- Suitable for use with CO2 refrigerants as well as others
- Allowable operating temperature: -40ºC to +120ºC
- High flow capacity
- Excellent sealing characteristics
Since 2004, Henry Technologies, UK has been a provider of thousands of products for CO2 sub-critical installations across Europe, the USA and most recently South Africa. Henry Technologies’ catalogue includes flow control products, compressor protective devices and heat transfer products. The company also has a number of transcritical products including oil separators, which have been successfully installed during recent years.
MORE INFORMATION
By R744.com team (@r744)
Jun 27, 2011, 10:43
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