Steam Coils

Steam Distributing / Non-Freeze Steam Coils and Standard Steam Coils 

Replacement and OEM Coils for Steam Distributing/Non-Freeze Steam Coils and Standard Steam Coils.  Vertical and horizontal positioning. 

Primary Surface

Round seamless copper tubes are mechanically expanded into the fin collars of the secondary surface. The mechanical expansion provides a permanent metal-to-metal bond for efficient heat transfer. Tubes are staggered in the direction of airflow and only return bends are used - NO reduced tube wall in the bend radius by using hairpin bends.

Tube Size Options:

  • 5/8" O.D. x .025" wall thickness standard with optional wall thickness of (.035) and (.049). Centerlines are 1.5" in the tube face and 1.299" between rows.
  • Copper, Cupro-Nickel, Stainless Steel and Carbon Steel available
  • Rows available are 1,2,3 or 4.

Fin Surface

Corrugated plate type fin that is die-formed. Fin collars are full-drawn to provide accurate control of fin spacing and maximum contact with tubes.

Fin Material Options:

Aluminum fin thickness of .008 inch standard with optional (.010). Optional copper fin thicknesses available are (.006) (.008) and (.010). Fins per inch available 6 through 14.

Stainless Steel is also available up to .020 thick with helically wound fin.

Headers

Seamless copper with die-formed holes that provide a parallel surface to the coil tube for strong brazing joints. Other options are available: Stainless, Cupro-Nickel and Carbon Steel.

Connections

Red Brass Schedule 40 (MPT) is standard with optional Carbon Steel, Copper, Copper Nickel and Stainless Steel available. Options for FPT also available. Maximum fin length of 120 inches with same end connections. Fin length over 120 inches is recommended to have steam supplied at both ends. (Any fin height over 48 inches will have two supplies and two returns).

Casing

Using 16-gauge minimum thickness material, 1 1/2" flanges are die-formed to permit easy stacking and mounting. Intermediate tube supports are supplied on coils over 44" fin length with an additional support every 42" multiple thereafter.

Casing Material Options:

Full 16 gauge galvanized steel standard with optional stainless, aluminum and copper.

Testing & Performance

All coil assemblies are leak tested under water at 315 PSIG air. Standard construction is suitable for 30 PSIG steam pressure. Heavier wall, high pressure construction available up to 100 PSIG and beyond.

PERFORMANCE IS CERTIFIED under ARI Standard 410.

Steam Distributing Coils

Primary Surface

Round seamless copper tubes are mechanically expanded into the fin collars of the secondary surface. The mechanical expansion provides a permanent metal-to-metal bond for efficient heat transfer. The 5/8" O.D. inner steam distributing tubes are centered in the outer condensing tube (1-1/8" O.D.). The inner tube has proportionally spaced directional steam jet orifices that direct the condensate flow to the outlet.

Tube Size Options:

  • 1-1/8" O.D. x .035" wall thickness standard with optional wall thickness of (.049). Centerlines are 3.0" in the tube face and one row is the only option.
  • 5/8" O.D. (.035”-.049”) outer with 3/8" O.D. inner steam distributing tube

Secondary Surface

Corrugated plate type fin that is die-formed. Fin collars are full-drawn to provide maximum contact with tubes.

Fin Material Options:

Aluminum fin thickness of .010 inch standard with optional (.008). Optional copper fin thicknesses available are (.006) (.008) and (.010). Fins per inch available 4 through 14.

Headers

Seamless copper with die-formed holes that provide a parallel surface to the coil tube for strong brazing joints.

Connections

Red Brass Schedule 40 (MPT) is standard with optional Carbon Steel, Copper, Copper Nickel and Stainless Steel available. Options for FPT also available. Maximum fin length of 120 inches with same end connections. Fin length over 120 inches is recommended to have steam supplied at both ends. (Any fin height over 48 inches will have two supplies and two returns).

Casing

Using 16-gauge minimum thickness material, 1 1/2" flanges are die-formed to permit easy stacking and mounting. Intermediate tube supports are supplied on coils over 44" fin length with an additional support every 42" multiple thereafter.

Casing Material Options:

Full 16 gauge galvanized steel standard with optional stainless, aluminum and copper.

Testing & Performance

All coil assemblies are leak tested under water at 315 PSIG air. Standard construction is suitable for 50 PSIG steam pressure. Heavier wall, high pressure construction available up to 100 PSIG and beyond.

PERFORMANCE IS CERTIFIED under ARI Standard 410.

Blejwas Associates, Inc.
221-A Evans Way • Branchburg, NJ 08876
Tel: (908) 253-8822 • Fax: (908) 253-8833
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