Sentry DTC Dual Tube Coil Heat Exchanger

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Sentry DTC (dual tube coil) tube-in-tube heat exchangers are spirally wound, full counter flow heat exchangers well suited for a variety of applications where low flow rates of high temperature and/or high pressure fluids need cooling or heating. The sturdy tube-within-a-tube concept uses heavy duty terminal fittings to provide for a plain tube end interface for the inner tube, and a compression connection for the outer tube.

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The plain end of the inner tube is easily adapted to a variety of connections including compression, threaded, socket weld, sanitary clamp and many more. The tube-within-a-tube design also provides for high pressure/temperature capabilities on both sides of the heat exchanger, providing greater application flexibility. The single continuous inner tube increases reliability and cleanliness and allows the unit to be completely drainable.

Advantage

Fully drainable inner and outer coil
Spiral wound for maximum counterflow efficiency
Constant fluid velocity
No dead spots or crevices
Excellent for multi-phase/multicomponent fluids and slurries

models	inner tube design	outer tube design	inner tube material	outer tube material	heat transfer area	weight
DTC-CUA/CUA-4-1-1	2000 psi at 300°F (137 bar at 148°C)	700 psi at 300°F 48 bar at 148°C	1/4 in OD copper	1/2 in OD copper	1.26 ft2 (0.12 m2)	12 lb (5.5 kg)
DTC-SSA/CUA-4-1-1	4900 psi at 1000°F (337 bar at 537°C)	700 psi at 300°F 48 bar at 148°C	1/4 in OD 316SS	1/2 in OD copper	1.26 ft2 (0.12 m2)	12 lb (5.5 kg)
DTC-IN1/CUA-4-1-1	1 5450 psi at 1100°F (375 bar at 593°C)	700 psi at 300°F 48 bar at 148°C	1/4 in OD Inconel®	1/2 in OD copper	1.26 ft2 (0.12 m2)	12 lb (5.5 kg)
DTC-SSA/SSB-4-1-1	4900 psi at 1000°F (337 bar at 537°C)	2300 psi at 1000°F 158 bar at 537°C	1/4 in OD 316SS	1/2 in OD 316SS	1.26 ft2 (0.12 m2)	12 lb (5.5 kg)
DTC-IN1/SSB-4-1-1	5450 psi at 1100°F (375 bar at 593°C)	2300 psi @1000°F 158 bar @537°C	1/4 in OD Inconel®	1/2 in OD 316SS	1.26 ft2 (0.12 m2)	12 lb (5.5 kg)