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COBREX Double-wall Instantaneous Steam Water Heater

COBREX is a factory packaged, skid-mounted instantaneous water heater. The heat exchanger is a double-wall, copper-tube, counter-flow design. Temperature control is provided entirely on the domestic water side through dual thermostatic mixing valves. These mixing valves modulate infinitely in response to hot water demand.

No steam valve is required with pressures at or below 15 psi!

Designed for buildings with hot water re-circulation and provides incredibly accurate temperature control.

Electronic communication with BAS optional.


  • With 15 psi inlet steam, units are available to produce 20, 30, 40, 50 and 60, 75 and 90 gpm of water from 40 to 140 degrees F.


  • Heat exchanger contains less than 2 gallons of water.

Corrosion Protection

  • Heat exchanger is all copper and bronze construction on the boiler water and domestic water sides.
  • Piping and fittings are either brass, bronze or copper.


  • ASME, section VIII and National Board Registered.


  • Three-year heat exchanger warranty covering defects in material or workmanship
  • One-year parts warranty
  • First-year service policy (freight and labor coverage)

Information provided above is summary only. Refer to written warranties and service policies for full details.