Inline DI Water and Chemical Heaters

Hot DI water shortens rinse times, and many clean, etch and plating baths have to be held at temperature. An inline heater sits in the supply or recirculation line and brings the liquid to temperature as it flows. The question that decides which heater you need is what the liquid touches on the way through.

Choosing by chemistry

• DI and RO water. The Tytan has titanium elements and wetted parts, from 12 kW to 144 kW. For ultra-pure water the Lufran DI has PTFE and PVDF wetted surfaces, from 24 kW to 312 kW.
• Acids and aggressive chemistries. All-fluoropolymer flow paths in the TIH (1 kW to 18 kW), ChemHeat (2 kW to 6 kW) and Nexus, and PTFE and PFA in the SHC.
• SC1, SC2 and other quartz-compatible baths. The HCQ has 100% high-purity quartz wetted parts inside a PTFE housing that acts as secondary containment.
• Water, bases and solvents at high flow. Electropolished 316 stainless steel in the Frontier (3 kW to 36 kW, ATEX II 3G) and the turn-key Lufran chemical heater (36 kW to 108 kW).
• IPA and flammable solvents. The SHX heats indirectly through a PTFE flow path, assembled in a Class 100 cleanroom, from 3 kW to 12 kW.
• Nitrogen and other non-flammable gases. The Soltan for drying, from 2 kW to 9 kW.
• Hot filtration. The LTFH reusable filter housing is heavy-wall PTFE throughout.

Sizing

For water, the power you need is roughly flow in litres a minute, times the temperature rise in °C, times 0.07. Heating 10 litres a minute from 20°C to 70°C needs about 35 kW. Chemistries differ, so send us the flow, inlet and set-point temperatures, the chemistry and your supply voltage, and we’ll size it with Process Technology.

On wet benches

Inline heaters are fitted to new wet benches and retrofitted to existing ones. If you’re specifying a bench, see our wet benches page.

SiSTEM supplies and installs Process Technology heaters across the UK and Ireland. Contact us with your application.