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

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 Coil Material Types

Advanced Coil manufactures steam distributing coils in the following materials:
Other materials available upon request.

Typical Application Reference Chart

*Higher pressures and/or temperatures are available to meet the specific project requirements

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 – 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

Brochures

Advanced Coil Warranty 148.1 KiBDOWNLOAD
Model DS 291.7 KiBDOWNLOAD