Industrial Steam Distributing Coils

Industrial Steam Distributing Coils

Overview

Non-Freeze Coils - Type DS (Same End Connectors)

steam distributing coils

Steam distributing coils, also known as 'non-freeze coils', are custom designed coils used to prevent freezing of steam condensate for coils that are used as preheaters for extreme temperatures. Most commonly, non-freeze coils are used in applications that may see freezing air temperatures and/or with modulating steam pressure. These coils are usually recommended for entering air temperatures below 40°F.

Steam Distribution Coil Design

These coils feature an inner tube inside the primary tube for two reasons. The inner tube distributes the steam to the far end of the primary tube where the steam returns and condensed in the annular area between the tubes, and the inner tube also acts as a heat-trace to keep the primary tube from freezing. Advanced Coil custom designs steam distributing coils with TIG welded tube side construction, and ASME ‘U’ stamp or CRN construction available upon request. Type DS coils are available as both one-row and two-row deep coils with the steam feed connection and the condensate return connection on the same end.
non freeze coils

Non-Freeze Coil Material Types

Advanced Coil manufactures steam distributing coils in the following materials: Other materials available upon request.
Case MaterialTube MaterialFin Material
16ga. to 1/4” 304L or 316L stainless steel7/8” x 0.049” wall 304L or 316L stainless steel0.025” or 0.016” thick half-hard temper aluminum
16ga. to 7ga. galvanized steel7/8” x 0.083” wall 304L or 316L stainless steel0.025” or 0.016” thick half-hard temper copper
7/8” x 0.109” wall steel 0.010” thick 304 or 316 stainless steel
0.012” thick carbon steel

Distributing Steam Coil Applications

Advanced Coil manufactures distributing steam coils for a variety of applications including:
  • Grain/seed processing facilities and equipment
  • Pulp/paper processing facilities and equipment
  • Dairy processing facilities and equipment
  • Food processing facilities and equipment
  • Power plants
  • Heat recovery systems
  • Petroleum/chemical plants
  • Textile factories
 

Distributing Steam Coil Configurations

Since both connection are on the same ends these coils can be installed in three possible configurations:
  • Horizontal Air Flow with Horizontal Tubes
  • Horizontal Air Flow with Vertical Tubes
  • Vertical Air Flow with Horizontal Tubes

Specifications

Specifications – Steam Coils

Advanced Coil offers a variety of tube and fin configurations which will accommodate virtually any application, regardless of the operating temperatures, pressures or environmental conditions. If the material that you need for a specific project is not listed below please contact us to discuss your needs.  We have experience using a variety of other materials.

Fins

Fin Spacing
  • 2.5 FPI (fins per Inch) to 11 FPI spacing
Aluminum
  • 0.025” thick half-hard tempered
  • 0.016” thick half-hard tempered
Stainless Steel
  • 0.010” thick 304LSS
  • 0.010” thick 316LSS
Steel
  • 0.010” thick
Copper
  • 0.016” thick half-hard tempered
  • 0.025” thick half-hard tempered
Spiral Fins
  • Embedded, spiral wound, brazed or welded finned tubes are available upon request

Tubes

Steel
  • 0.109” wall (12 gauge) ASTM A214 Welded Steel (S09)
  • 0.109” wall (12 gauge) ASTM A179 Seamless Steel (S09)
Stainless Steel
  • 0.049” wall (18 gauge) ASTM A249 Welded 304LSS (449)
  • 0.083” wall (14 gauge) ASTM A249 Welded 304LSS (483)
  • 0.049” wall (18 gauge) ASTM A249 Welded 316LSS (649)
  • 0.083” wall (14 gauge) ASTM A249 Welded 316LSS (683)
  • 0.049” wall (18 gauge) ASTM A213 Seamless 304LSS (449)
  • 0.083” wall (14 gauge) ASTM A213 Seamless 304LSS (483)
  • 0.049” wall (18 gauge) ASTM A213 Seamless 316LSS (649)
  • 0.083” wall (14 gauge) ASTM A213 Seamless 316LSS (683)

Casings

Types
  • Standard
  • Standard Pitched
  • Baffled
  • Baffled Pitched
  • Air Tight
  • Air Tight Pitched
  • Slide Out
  • Slide Out Pitched
 Materials
  • Galvanized Steel  16 ga. To 7 ga.
  • 304 Stainless Steel  16 ga. To ¼” thick
  • 316 Stainless Steel  16 ga. To ¼” thick
  • Aluminum  0.060” to ¼” thick

Typical Application Reference Chart

Typical Application
Tube Material
Tube Designation
Header Material
Typical Design Pressure @ Temperature*
High pressure, non-corrosive steam 0.109” wall (12 ga.) Steel S09 Welded
309 Seamless
Sch 40 Carbon Steel 250 PSIG @ 450°F
Corrosive steam or corrosive atmosphere 0.049” wall (18 ga.) 304LSS 449 Welded
549 Seamless
Sch 40 304LSS 250 PSIG @ 450°F
Corrosive steam or corrosive atmosphere 0.049” wall (18 ga.) 316LSS649 Welded
749 Seamless
Sch 40 316LSS 250 PSIG @ 450°F
High-pressure, corrosive steam or corrosive atmosphere 0.083” wall (14 ga.) 304LSS 483 Welded
583 Seamless
Sch 40 304LSS 250 PSIG @ 450°F
High-pressure, corrosive steam or corrosive atmosphere 0.083” wall (14 ga.) 316LSS 683 Welded
783 Seamless
Sch 40 316LSS 250 PSIG @ 450°F
*Higher pressures and/or temperatures are available to meet the specific project requirements  

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