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HGZ Two-Stage Compressors

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HGZ Two-Stage Compressors

Based on the 6-cylinder compressor HG7, a selection of two-stage variants is available for extended use in intense cooling. The selection of the liquid intercooler unit is available for three different refrigerants: R404A (R507), R410A and R22. Basically, it concerns different expansion valve assemblies. Therefore in the further descriptions, only one option (e.g. HGZ7/2110-4 R22) is indicated.

The optional two-stage system is composed of:
  • Liquid super cooler
  • Expansion valve
  • Solenoid valve
  • Sight glass
  • Filter dryer
The two possible optional variants of the HGZ7:
  1. Design Intermediate pressure line mounted and insulated Liquid super cooler, expansion valve, solenoid valve, two sight glasses, filter dryer everything enclosed separately for an individual, external mounting.
  2. Design Liquid super cooler, expansion valve, solenoid valve, two sight glasses, filter dryer attached directly to the compressor, lined and insulated.
 
Features
  • Six-cylinder construction
  • Stages divided into LP / HP at the ratio of 2: 1
  • Two-stage operation with liquid super cooler
  • Expansion valve adjusted to refrigerant and application
  • Extremely economical and reliable concept
HGZ Two-Stage Compressor
Current Types Displacement at 50Hz (145. rpm) m3/h    
HG27 93.7 46.9 107.6 53.8 122.4 61.2
HGZX7 93.7 46.9 107.6 53.8 122.4 61.2