Secondary surface (fins) shall be of the plate-fin design using aluminum or copper, with die-formed collars. Fin design to be flat, waffle, or sine-wave in a staggered tube pattern to meet performance requirements. Collars will hold fin spacing at specified density, and cover the entire tube surface. Fins are to be free of oils and oxidation.
Coil casing material shall be galvanized steel at a 16 gauge minimum. Heavier material, stainless steel, copper or aluminum casings are available as required.
Intermediate supports are required every 50” of finned length and shall be bolted to top and bottom casing channels. Coil casings on top and bottom of coils are to have double-flange construction, allowing for vertical stacking of coils.
Seamless copper tubes shall be mechanically expanded into plate aluminum or copper fins to form an everlasting bond between primary and secondary surfaces. Tubes are to be mechanically expanded into fins (secondary surface) for maximum heat transfer.
Coils shall be tested at 550 psig using dry nitrogen, submerged under water. Dual-operator verification shall determine that all coils are leak-free.
Fluid coils are guaranteed up to a maximum 250° F operating temp, and 300 psig maximum operating pressure.
Connection is to be sweat type (SWT), MPT or FPT grooved or flanged as required.
Materials and Specifications
|Fin Material||Aluminum||Copper; Stainless Steel|
|Casing Material||Galv. Steel 16 gauge||Galv. Steel 14 gauge
Stainless Steel 16 gauge
|Tube Material||Copper||Steel • Red Brass|
|Connection Material||Copper||Stainless Steel • Cupro Nickel • Carbon Steel|
|Header Material||Copper||SS Tube will have SS HDR(s) • Cupro Nickel Tubes will have Cupro Nickel HDR(s) • Carbon Steel Tubes will have Carbon Steel HDR(s)|
The equipment we build is specially made to meet your exact engineering requirements, but we also understand time critical projects require quick turn around. Our expedited production program allows us to offer coil shipments in as little as 10, 5, 3 and 1 working days guaranteed.
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