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Spray Drying Chambers

Spray drying chambers

SFI is an experienced fabricator of custom spray drying chambers and associated equipment, building our first spray drying chamber in 1987. Since then, we have completed more than 50 spray dryer installations. 

We partner with spray drying system professionals, serving as the fabrication arm while they work with the end user to design the chambers and custom stainless steel vessels to meet their specifications and application requirements.  

As a stainless equipment fabricator, our specialties in this area include:

  • Spray dryer chambers
  • Bag houses
  • Cyclones
  • Penthouses
  • Bustles
  • Special ducting
  • Fluid bed assemblies
  • Stacks
  • Platforms

How They’re Made

SFI shop and field personnel are experienced craftsmen, building stainless steel vessels and equipment with a variety of options, such as:

  • Materials and finishes
  • Insulation and outer jackets
  • Ports and inlets
  • Supports (lugs, skirts)

And more…

In addition to fabricating new equipment, SFI also performs field inspections and can make field modifications & repairs to existing equipment. 

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Shop or field fabrication

Pressure vessels and reactors are typically shop-built in our facility, however, if circumstances require that they be built in the field, we can do that too.  All SFI welders are ASME certified.

Modifications and Repairs

SFI is ASME certified to not only build new equipment, but also make modifications and repairs. These services include:

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Materials of Construction

  • 300 Series Stainless Steel
  • Other nickel based alloys including:
    • Hastelloy
    • Monel
    • Inconel
    • Duplex 2205

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Material Finishes

  • 2B (cold rolled sheet)
  • Mill (HRAP)
  • Mechanical polish (from 50 to 10 Ra)
  • Mechanical polish plus Electropolish (from 30 to 10 Ra)

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Weld Finishes

  • As-Is
  • Scotch-Brite buffed
  • Mechanical grind (50 grit)
  • Mechanical polish (32 to 10 Ra)

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Heating & Cooling

  • Dimple jacket
  • Half pipe coil
  • Internal pipe coil
  • Open jacket

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SFI can create a custom-designed mixing solution to meet your needs. 

We offer mixers or combinations of mixers for processing a wide variety of viscosities and applications for our stainless steel tanks. Mixer styles include turbine, sweep, scrape, and dual motion.

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  • Legs
  • Lugs
  • Skirts
  • Saddles


Field fabricated spray dryer chambers

Spray drying chambers are typically field fabricated.  They are built on the ground in two sections (chamber and cone) and then set in structural steel by crane(s).  The materials, and many components, are formed in our shop for assembly in the field.  

Most spray drying chambers are used for drying various food or chemical products.  It is common to see 2B or mill finish material with interior welds ground flush.  Whatever the need, SFI remains flexible to deliver results and exceed expectations.  We are experienced in areas such as 

  • Stainless steel and other nickel based alloys available
  • Coordination and installation of explosion panels
  • Skirts and support lugs for installation in structural steel framework
  • Chambers for dairy service typically built per USDA standards
  • Design calculations based on pressure, temperature and seismic by in-house Engineers
  • Fabrication of equipment used with spray drying chambers
  • Other certifications and standards (ASME, API, UL-142, etc.)

In addition to fabricating new equipment, SFI also inspects and makes field modifications and repairs to existing equipment.


SFI utilizes various standards to ensure your product is built to the highest quality possible. 

We hold the following certificates:

  • ASME “U” certification
  • National Board “R” certification 

Other standards are utilized as required, such as:

  • API 620 & 650
  • ASME BPE Guidelines
  • Canadian Registration Number (CRN) documentation
  • Ministry of Manpower-Singapore (MOM) documentation
  • PED (European Pressure Equipment Directive) “CE” Mark
  • UL-142
  • USDA

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