SX Series

Looking for an alternative to electrically generated humidification? Concerned about using chemically treated boiler steam for direct humidification? If so, PURE’s “SX” Series Steam Heat Exchanger Humidifiers are exactly what you’re looking for.

Clean Steam

The steam produced by the “SX” Series humidifier is free from chemical or mineral carry-over, providing humidification to meet today’s stringent indoor air quality requirements.

Ease of Maintenance

The unique side entry heat exchanger assembly provides a large clean out access section without disturbing the cover or injection tube system’s steam supply piping.


Capacity range up to 2,035 lbs/hr with single units. The humidifier controller allows multiple humidifiers to share a common control signal and operate in a lead/lag configuration to meet larger capacity requirements.

Dispersion Methods

Choose from straight injection tubes, Fast-Pac, or the Insty-Pac multiple injection tube assembly for short dissipation applications. Blower Packs for area dispersion are also available.


The “SX” model works with standard water and uses a Tri-Probe assembly to maintain the water level.

  • 304L stainless steel construction
  • Tri-Probe water level controller
  • Adjustable surface water flusher
  • Motorized drain valve with brass body
  • Rectangular tube heat exchanger


The “SXDDR” model is for use with Deionized, Demineralized or Reverse Osmosis water. It utilizes a stainless steel float-operated fill valve to maintain the water level and a stainless steel float-operated low water cut-off switch.

  • 304L stainless steel construction
  • Stainless steel float operated fill valve
  • Stainless steel overflow stand pipe
  • Stainless steel manual ball valve drain

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