Expansion Element FXV-BY

EGELHOF has developed the expansion element FXV-BY as a universal solution for the R744 refrigeration circuit and this element has thus become suitable for all types of vehicles from compacts to vehicles of the luxury class. EGELHOF has designed it as a two-stage expansion element with fixed orifice for small and medium capacity requirements. An additional bypass is switched on depending on pressure and has also been foreseen together with the orifice for big capacities and extremely dynamic requirements.

The FXV-BY fulfills the following core functions:

• Robust proportional transmission behavior during all load conditions
  
• An optimum or even higher high pressure is created within supercritical range
  
• A COP optimum operating mode is guaranteed within subcritical operation
  
• Considerable refrigeration capacity at high ambient temperatures, good dynamics during start conditions (“Cool-down“)
  
• Compensation of pressure peaks guaranteed by bypass
  
• The operating parameters “opening point for bypass“ and ”orifice diameter“ are construed to customer specifications
  
• Integrated dirt filter
  
• Connection method as per customer requirements

In addition to its function as an expansion element, the FXV-BY can be used as a relief pressure valve for the low pressure side within the refrigeration device, since a burst disk has been installed.
As for its shape and weight it is comparable with the conventional standard block valve for R134a.

Characteristics of the Expansion Element FXV-BY:

• 2-stage expansion element incl. a fixed orifice with a bypass
  
• Burst disk can be built in
  
• Filter integrated
  
• Bypass opening pressure: as per customer specification
  
• Bypass characteristic: as per customer specification
  
• Orifice diameter: as per customer specification
  
• Connection method: as per customer specification
  
• Al housing