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The Caleffi SEP4 combination air, hydraulic, dirt and magnetic separator is a device that, incorporates high performance air and magnetic and non-magnetic dirt removal functionality into the hydraulic separation function which makes the primary and secondary circuits connected to it hydraulically independent, and can be used on hot or chilled water systems. The SEP4 features an HDPE internal element that combines to continuously and automatically eliminate air micro-bubbles with the simultaneous removal of dirt particles as tiny as 5 microns. The air discharge capacity is very high, with the capability of automatically removing all the air present in the system down to the micro-bubble level. The 4 in 1 high performance functionality of the SEP4 saves system installation and maintenance costs as there is no need to include separate air and dirt separators. In addition to removing sand and rust impurities, the added magnetic ring provides effective capture of ferrous particles.

  • Combination air, dirt, hydraulic and magnetic separator.
  • Epoxy resin coated steel body.
  • HDPE internal coalescing element, removable for cleaning.
  • Pre-formed insulation.
  • Max working pressure: 150 psi
  • Working temp range: 32 - 210F
  • Working temp range without insulation: 32 - 230F
  • Particle separation capacity: to 5 (0.2 mil)
  • Magnetite removal efficiency: 95%
  • Air separation efficiency: 100% to microbubble level.
  • Complete with union connections.
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Hydraulic Separator
Connection Size:
Connection Method:
Connection Type:
Press x Press
Max Pressure:
150 psi
Max Temp (F):
Water or Glycol up to 50%
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