HeatX supplies this tube-in-tube line and stands behind every unit we quote. Our part of the job starts before any alloy is chosen: we read the duty, question the data and decide which geometry the product actually needs. A buyer who sends a flow rate, two temperatures and the word 'sauce' gets questions back about solids, sugar content, how the viscosity moves with temperature and what utility is on hand.
That questioning is the work. A tube-in-tube exchanger is sized by length, and the length depends on a film coefficient that falls apart when the viscosity is wrong. Getting the inputs right costs far less than adding sections after start-up, so we would rather spend a day on the data sheet than ship a unit that comes up short.
We also stay in our lane. This site covers tube-in-tube, double pipe, multi-tube, triple-tube and coiled designs for duties that a plate pack or a shell-and-tube struggles with. Other HeatX sites cover the other geometries, so the advice here stays on one product class and the streams it handles best.
A tube-in-tube exchanger is only as good as the viscosity it was sized on, so we measure it whenever the data is in doubt.
Viscosity, rheology, reverse-sweep and custom testing
For food, beverage, dairy, pharmaceutical and personal-care lines, product surfaces are 316L as standard with 304L as an option, polished or electropolished, joined with tri-clamp connections and built to 3-A. Units drain fully and take CIP and SIP without opening anything.
For chemical, oil and gas, pulp, mining, wastewater and power plants, materials run from carbon steel through 316L, 2205 duplex, AL-6XN, titanium and high-nickel alloys, with flanged or threaded ends. Double pipe designs carry pressures to 1500+ psi and temperatures above 600 F.
Units are offered with ASME Section VIII design and U stamp, National Board registration and 3-A sanitary construction where the duty calls for them, backed by ISO 9001 quality management and ISO 45001 occupational health and safety management. Tell us at the start which codes your plant or your customer requires, because it changes the paperwork and sometimes the design.
The fastest route to a firm proposal is a complete duty: the product and what is in it, flow, inlet and outlet temperatures, viscosity at temperature, particle size, the utility available, pressures and any material or code requirement. Send it to Sales@HeatX.com or call 1-805-484-2992 from 8am to 5pm, and use the Request a Quote page once the numbers are ready.