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


 Basic specifications

  • Classified as “pressure accessories” under Equipment Directive 97/23/EC
  • For installation in commercial refrigeration systems/ industrial conditioning plantsusing CO2 (R744)
  • For up to 120 bar
  • Installed in any section of a refrigeration system where necessary to avoid inversion of flow

Parts and materials for check valves:

  • Body and cover: hot forged brass EN 12420 – CW 617N
  • Spring: austenitic stainless steel AISI 302
  • Piston: bar brass EN 12164–CW 614N
  • Seat piston gasket: P.T.F.E.
  • Copper tube EN 12735-1 – Cu-DHP for solder connections of series 3185EL and 3185E
  • Copper tube EN 12735-1 – CuFe2P (K65) for solder connections of series 3187E
  • Stainless steel tube AISI 304 for solder connections of series 3188E

Models

  • Series 3185EL with PS = 60 bar, copper connections equipped, for subcritical systems
  • Connections from 22mm to 35mm (7/8’’ to 1.3/8’’)

  • Series 3185E with PS = 80 bar, copper connections equipped, for transcritical systems low pressure side and medium pressure side
  • Connections from 22mm to 35mm (7/8’’ to 1.3/8’’)

  • Series 3187E with PS = 120 bar, reinforced copper connections (K65) equipped, for transcritical systems high pressure side
  • Connections from 22mm to 35mm (7/8’’ to 1.3/8’’)

  • Series 3188E with PS = 120 bar, stainless steel connections equipped, for transcritical systems high pressure side
  • Connections from 22mm to 33,4mm (7/8’’ to 1.5/1.6’’)

Applications

  • Commercial refrigeration
  • Industrial air conditioning

GALLERY


MORE INFORMATION

Check valves for CO2 systems



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