DHT Products > Heating & Cooling Coils > Water Coils

Hot Water Coils, Chilled Water Coils & Water Coil Heat Exchangers

OEM and Replacement Coils for Every Application
Cross Reference All Major Brands
Quick Response/Field Measurement Available
Competitive Prices
Fast Turnaround
48 Hour and 5 Day Ship Available
Standard Lead Time is 2-3 Weeks
Credit Cards Accepted

Water Coils, Chilled Water Coil, Hot Water Coils & Glycol Coils

Replacement and OEM coils for Chilled Water Coils, Hot Water Coils and Glycol 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. Tubes are staggered in the direction of airflow.

Headers

Seamless copper with die-formed holes that provide a parallel surface to the coil tube for strong brazing joints. Standard 1/8" brass female pipe thread (FPT) vent and drain with optional (1/4) and (3/8). All circuiting is designed to gravity-drain with the coil mounted vertically and tubes running horizontally.

Connections

Red Brass Schedule 40 (MPT) is standard with optional Carbon Steel, Copper, Copper Nickel and Stainless Steel available. Options for FPT also available.

Casing

Using 16-gauge minimum thickness material, 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:

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 250 PSIG and up to 300 degrees F.

PERFORMANCE IS CERTIFIED under ARI Standard 410.

Tube Size Options:

5/8" O.D. x .020" wall thickness standard with optional wall thickness of (.025) (.035) and (.049). Centerlines are 1.5" in the tube face and 1.299" between rows.
1/2" O.D. x .017" wall thickness standard with optional wall thickness of (.025). Centerlines are 1.25" in the tube face and 1.083" between rows.
3/8" O.D. x .016" wall thickness standard with optional wall thickness up to (.035). Centerlines are 1" in the tube face and .866" between rows.
Rows available are 1, 2, 3, 4, 5, 6, 8, 10 and 12.

Secondary 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:

5/8" tubes comes standard with aluminum fin .008" thick with optional (.010). Optional copper fin thicknesses available are (.006) (.008) and (.010). Fins per inch available 4 through 14.
1/2" tubes comes standard with aluminum fin .006" thick with optional thicknesses available. Copper fin thicknesses available to .008".
3/8" tubes comes standard with aluminum fin .006" thick with optional thicknesses available. Copper fin thicknesses available start at .0045".
Fins per inch available 6 through 20. Other fin types available: Lance, Sine, Flat.

Also Available:

Intermediate headers for full "drainability".

Contact us for availability of other patterns, fin materials and/or thicknesses.