PHOENIX VH Direct Fired Burner

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5MM BTU/hr Medium & High Velocity



  • Stainless Steel Nozzles (150,000-2MM BTU/hr)
  • Refractory Block Combustors (150,000-5MM BTU/hr)
  • Flanged Air Piping Connections (ANSI & DIN)
  • 3MM BTU/hr Ceramic Combustor

Direct Fired Burners

PHOENIX Velocity Heat Burner

When you need rugged dependability, PHOENIX Velocity Heat (VH) has you covered from 150,000 up to 5,000,000 BTU/hr.

Typical applications for the VH burners include batch and continuous furnaces for heat treating, thermal oxidizers, nonferrous melting furnaces, and many more. VH direct fired burners are made to last, built with rugged dependability and reliability in mind.

Integrated gas and air orifices simplify burner piping, set-up and adjustment. The orientation of the integral air and gas inlets are adjustable in 90-degree increments to suit a variety of piping alternatives making installation, operation and maintenance simple and cost effective.

The VH burners can be operated on-ratio and with fixed air control schemes. The built-in ignitor ensures reliable ignition of the VH burners across the entire operating range.

High-temperature powder coated components and the stainless steel nozzle option assure that the burner will stand up to the demanding environments of industrial heat treat applications. All burner components are easily accessible making annual maintenance of the burner fast and easy.

The VH burners are designed to be compatible with the Honeywell® (1) and Eclipse® (2) ThermJet burners and are a direct replacement for the TJ burners without any material impact on performance and other operational aspects of the process.

VH Burner Capabilities

Turndown10:1 (on-ratio); 50:1 (fixed air)
Fuels*Natural gas, Propane
Max. Operating Temperature1750°F (Alloy); 2,500°F (Ceramic); 2,800°F (Refractory)
Max. Combustion Air Temperature300°F

*Contact factory for additional fuels


Quick Delivery

Complete burners and replacement parts available now.

Features & Benefits


Highest velocity flame

The VH produces an intense stream of hot gases to thoroughly penetrate the load and deliver precise temperature uniformity for consistent product quality and system efficiency.


Large turndown combined with high excess air

A wide turndown range with high excess air means VH delivers high velocity benefits and efficiencies across its operating range.


Customization with packaged convenience

All VH components have been pre-engineered to come together to meet your specific requirements. You choose the capacity, nozzle material, combustor material and outlet velocity, fuel type, and flame sensing components you need to do the job.


Unparalleled fuel and control convenience

The VH offers the convenience of multi-fuel capability with no nozzle change. Plus, you can use any control methodology; pulse firing, excess air or on-ratio.

(1) Honeywell is a registered trademark of Honeywell International, Inc.

(2) Eclipse is a registered trademark of Eclipse, Inc.

Algas-SDI has no affiliation or connection with Honeywell International, Inc. or Eclipse, Inc. and Algas-SDI’s products are not sponsored or endorsed by Honeywell International, Inc. or Eclipse, Inc.

Frequently Asked Questions (FAQs)

Are your burners direct ThermJet replacements?

Yes, our Velocity Heat burners have an identical footprint and operational envelope as the Eclipse® ThermJet burners. This is to maintain familiarity for our customers in operation and installation of the burners.

Are spare parts interchangeable between Velocity Heat and ThermJet burners?

Yes, our Velocity Heat and the ThermJet share the most common spare parts. This includes alloy and ceramic combustors, nozzles, igniters, flame rods, o-rings, and mounting gaskets.

What is the lead time for the Velocity Heat burners?

Our goal is to ship burners in as little as four weeks. We keep stock of all the necessary burner components to allow the building and shipping of burners as quickly as possible.

Will you release more burner models than you currently show on your website?

Yes. Later this year we are planning to add to our Velocity Heat furnace burner line with capacities up to 10,000,000 BTU/hr.

How quickly can you ship spares to me?

We ship parts that are in stock, in five days or less.

What fuel inlet connections come with the flanged air inlets?

We provide an NPT threaded fuel inlet with an ANSI air flange and a BSP threaded inlet with a DIN air flange.

How will the refractory combustor and burner ship?

The refractory block will be shipped separately from the burner and directly from our closest manufacturing location. This ensures lower shipping costs and a better product delivery.

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