New Product: Selas Superflame™ Low NOx Medium & High Velocity Burners

Seven models available in capacities ranging from 150,000 BTU/hr (KW) to 2,000,000 BTU/hr (KW)

  • High Excess Air Capability
  • Alloy Inner Tube
  • Flame Rod or Ultra Violet Flame Detection
  • High and Medium Velocity Flame

The burner’s outer tube is made of advanced silicon carbide and the inner firing tube is made of stainless steel alloy. The high velocity burner incorporates two-stage combustion for low NOx. Specifically designed nozzles provide cool NOx-inhibiting first stage combustion. Final combustion occurs in the second stage area where combustion products exit at velocities of over 275fps (83mps) for medium velocity and 400fps (122mps) for high velocity.

Superflame combustion produces heat in dense loads and circulates the furnace for thorough heat uniformity enabling faster heat uniformity.  Superflame medium and High Velocity burners function well with ambient or preheated combustion air up to 700°F (371°C). Durable, lightweight SiC firing tubes are self-supporting.

The burners are ideal for installation in either brick or fiber wall furnaces, and are easily mounted to the furnace. The Superflame low NOx burner will work with ultraviolet detectors and most sizes also accept flame rod. Direct spark allows flexibility in designing the control system.

Features and Benefits

  • High excess air capability
  • Improved temperature uniformity
  • Alloy inner tube
  • Flame rod or ultra violet flame detection
  • Low NOx formation
  • High and medium velocity flame
  • Uniform temperature distribution

Operating Principles

Product Specifications

  • Seven models in capacities ranging from 150,000 BTU/hr (KW) to 2,000,000 BTU/hr (KW).
  • Works with on-ratio or excess air operation, as well as high-low firing, on-off firing or pulse-firing options.
  • Runs on gaseous fuels including natural gas, LP gases, and clean manufactured gases.
  • Operates at its nominal rating at less than 20” W.C. whether the combustion air temperature is 60°F (15.5°C) or 700°F (371°C) by adjusting the size of the inlet air orifice.
  • An inlet air orifice can be sized to compensate for preheated combustion air.
  • Process temperatures up to 2500°F (1371°C).
  • Preheated air temperature to 700°F (371°C).
  • Burner incorporates two-stage combustion for low NOx.

We offer seven models in capacities ranging from
150,000 BTU/hr (KW) to 2,000,000 BTU/hr (KW)

Low NOx Medium & High Velocity BurnersSuperflame Low NOx Velocity Burner

Please refer to specific data sheet for operating parameters of Superflame burner models.


  • Annealing furnaces
  • Sintering furnaces
  • Rotary forge furnaces
  • Tundish preheaters
  • Nonferrous melting furnaces
  • Ceramic kilns