SENTRY 7-02673X Tube In Tube Heat Exchanger

The Sentry DTC Tube-in-Tube Heat Exchanger (model DTC-IN7/CUC-8-1-1), identified as 7-02673X, is a spiral-wound, counterflow heat exchanger designed to manage low flow rates with high-temperature or high-pressure fluids. It features fully drainable inner and outer coils to facilitate purge and cleaning, and its spiral configuration delivers efficient heat transfer while maintaining constant fluid velocity and no dead spots or crevices. Outer tubes are standard copper or 316 stainless steel, while the inner coil can be 316 stainless steel, copper, or nickel alloys (with additional material options available). The exchanger is well suited for multi‑phase fluids and slurries and is highly resistant to thermal and hydraulic shock, with compliance to Sanitary 3A and ASME B31.1/B31.3 standards. Pressure and temperature ratings depend on material choice and coil diameter; for reference, the DTC family lists inner coils up to 5450 psi at 1100°F and outer coils up to 2300 psi at 1000°F. Surface-area options span DTC-4 (~1.26 ft2), DTC-6 (~1.90 ft2), and DTC-8 (~2.52 ft2), reflecting scalable configurations to accommodate varying heat-load requirements. This design emphasizes reliability and serviceability, providing a compact solution for precise heat exchange in demanding process and sample-conditioning scenarios.