• Classified as “pressure accessories” under Pressure Equipment Directive 97/23/EC
  • For installation in commercial refrigeration systems/ industrial conditioning plants using CO2 (R744)
  • For up to 120 bar


Basic Specifications

  • Classified as “pressure accessories” under Pressure Equipment Directive 97/23/EC
  • For installation in commercial refrigeration systems/ industrial conditioning plants using CO2 (R744)
  • For up to 120 bar
  • Ring changes color turns from green to yellow according to the percentage of moisture in the system
  • Yellow indicates it's time to substitute dehydrator filter of system
  • Total hermetic construction for series 3940EL and replaceable glass for series 3740E, 3747E and 3748E
  • Glass “lens” with gasket housed into the brass body 

Parts and materials for indicators:

  • Body: hot forged brass EN 12420 – CW 617N
  • Solder connections: copper tube EN 12735-1 – Cu-DHP
  • Lens: glass for series 3940EL – fused onto a steel metallic ring for series 3740E, 3747E and 3748E
  • Outlets and seal gaskets: PTFE for series 3940EL and EPDM for series 3740E, 3747E and 3748E

Models

  • Series 3940EL with PS = 60 bar, copper connections equipped, for subcritical systems
  • Connections from 6mm to 28mm

  • Series 3740E with PS = 80 bar, copper connections equipped, for transcritical systems, low pressure side and medium pressure side
  • Connections from 6mm to 28mm

  • Series 3747E with PS = 120 bar, reinforced copper connections (K65) equipped, for transcritical systems, high pressure side
  • Connections from 3/8’’to 1.1/8’’

  • Series 3748E with PS = 120 bar, stainless steel connections equipped, for transcritical systems, high pressure side
  • Connections from 6mm to 28mm

Applications

  • Commercial refrigeration
  • Industrial air conditioning

GALLERY


MORE INFORMATION

Liquid/ Moisture Indicators for CO2 systems



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