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Circulation and Process Heaters
 Watlow's circulation heaters are compact heating solutions for fluids such as purified and inert gases, supercritical fluids and liquids like de-ionized water for use in semiconductor and electronics industries as well as for general liquid and gas heating applications.
Watlow's industrial process heater lines of immersion, circulation and duct heaters are used to heat a myriad of high and low viscosity fluids ranging form de-ionized and process water, oils, solvents, rinse agents, caustic solutions, etc. to process gases like air, nitrogen, purified and inert gases as well.
| RAPID RESPONSE™ Heat Exchanger |
Incoloy®, Copper, 304SS and 316LSS |
Incoloy®, Copper, 304SS and 316LSS |
Gases, vapors, liquids, supercritical fluids; Up to 15kW in compact configurations, process temperatures up to 600°C (1112°F) |
| CAST-X 500 Circulation Heater |
316SS with cartridge heater |
Cast aluminum body with 316SS tubing and a cartidge heater |
Indirectly heats gases, liquids and liquid / vapor mixtures up to 3kW. Process temperatures up to 177°C (350°F) operating pressures to 3000 psi |
| CAST-X 1000 Circulation Heater |
Copper coated steel cast in aluminum |
Cast aluminum body with 304SS cast in process tube |
Indirectly heats gases, liquids and liquid / vapor mixtures up to 3kW. Process temperatures up to 121°C (250°F) operating pressures to 1500 psi |
| CAST-X 2000 Circulation Heater |
316SS cast in aluminum |
Cast aluminum body with 316SS cast in process tube |
Indirectly heats gases, liquids and liquid / vapor mixtures up to 6kW. Process temperatures up to 260°C (500°F) operating pressures to 5000 psi |
| Universal Solvent Circulation Heater |
304SS cast in aluminum |
Teflon coated Cast aluminum body. 316SS passivated and electropolished cast in process tube |
Indirectly heats gases, liquids and liquid / vapor mixtures up to 8kW. Process temperatures up to 121°C (250°F) operating pressures to 1500 psi. |
| Universal Solvent Circulation Heater |
304SS |
Cast aluminum, Teflon® coated |
Low flash point liquids, gases up to 1500 psi |
| STARFLOW Circulation Heater |
316LSS |
316L |
Inert gases, liquids
3.9 - 5.4 W/cm²
(25 -35 W/in²)
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| Immersion Heaters |
Inconel®, Incoloy®, 304SS, 316SS, Steel, Copper |
Plugs - 1 to 2½ in. NPT; Brass, Steel, 304SS, 316SS
Square Flange - 2½, 318, 4½ in.: Brass, Steel, 304SS, 316SS, Inconel® materials
ANSI flange - Class 150 to 1200 lb., 2 - 36 in. size; Steel, 304SS, 316SS, Inconel® materials |
Oils to 4.6 W/cm² (30 W/in²)
Water to 15.5 W/cm² (100 W/in²)
Gases to 4.6 W/cm² (30 W/in²)
Other liquids 1.2 -4.7 W/cm² (8 - 30 W/in²)
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| ASME Immersion Heaters |
Inconel®, Incoloy®, 304SS, 316SS, Steel, Copper |
ANSI flange - Class 150 to 2500 lb., 2 in - 48 in. size; Steel, 304SS, 316SS, 321SS, titanium, Incoloy®, Inconel® materials |
Oils to 4.6 W/cm² (30 W/in²)
Water to 15.5 W/cm² (100 W/in²)
Gases to 4.6 W/cm² (30 W/in²)
Other liquids 1.2 -4.7 W/cm² (8 - 30 W/in²) |
| Circulation Heaters |
Inconel®, Incoloy®, 304SS, 316SS, Steel, Copper |
Vessel - Steel, 304SS, 316SS, Inconel® 1 to 2½ in. NPT Screw Plugs;
ANSI flange - Class 150 to 1200 lb., 2 - 36 in. size; Steel, 304SS, 316SS, Inconel® materials |
Oils to 4.6 W/cm² (30 W/in²)
Water to 15.5 W/cm² (100 W/in²)
Gases to 4.6 W/cm² (30 W/in²)
Other liquids 1.2 -4.7 W/cm² (8 - 30 W/in²)
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| Engine Preheaters |
Copper, Steel, Incoloy® |
Vessel - Steel |
Up to 100°C (210°F)
Up to 13.9 W/cm² (90 W/in²) |
| Over the Side Heaters |
Incoloy®, Steel |
L-shaped, O-shaped, Drum, Vertical loop |
Viscous fluids, freeze protection
1.2 - 9.3 W/cm²
(8 - 60 W/in²)
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| Duct Heaters |
Incoloy® |
Steel mounting flange/terminal box (insulated): Modular duct 6kW to 2.2 MW (uninsulated) |
Air to 650°C (1200°F)
Up to 6.2 W/cm² (40 W/in²)
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| Applications |
- Oil and gas field equipment
- Refineries and petrochemical plants
- Chemical and industrial gas plants
- HVAC duct heating
- Open tanks and heat treat baths
- Textile drying
- Heat transfer and lube oil systems
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- Semiconductor processing equipment
- Precision cleaning equipment
- Power generation systems
- Emissions control systems
- Supercritical fluid heating
- In-line water boilers
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RAPID RESPONSE™ Heat Exchanger
The RAPID RESPONSE™ heat exchanger quickly and effectively heats gases and fluids as they circulate through the unit's tubular design. It offers users a quick response rate and peak performance in high-pressure conditions, making it ideal for precision applications. In addition, the exchanger's design enhances circulation and provides excellent convective film coefficients, even under low flow conditions.
The unit can be custom-configured – allowing it to fit into small areas without sacrificing wattage. It also boasts integral temperature sensing to help users optimize their systems and refine processes.
The heat exchanger is also extremely energy efficient. Since the entire heater is immersed in the circulated chemistry, it virtually eliminates heat loss to the surrounding environment. In some applications, heat loss can be reduced further through the use of molded insulation surrounding the heating element.
U.S. Patent Number 6,944,394
Specifications
- Up to 15 kW in compact configurations
- Process temperatures up to 260°C (500°F)
- Operating pressure up to 411 bar (6000 psi)
- Standard 208 Volt (120-480 Volt capability)
- Electro polished to SEMI standards optional
- Integral inlet/outlet RTD or thermocouple sensor
- Fluid connections - high pressure VCR-type fittings
- Material - 316L standard, consult factory for other material types
Applications
- Photoresist material
- Solvent replacement
- Purification
- Parts cleaning
- Biomass extraction
- Bio reclamation
Watlow manufactures a variety of tubular heaters and process assemblies including screw plug heaters, flange heaters, circulation heaters, duct heaters, drum heaters, immersion heaters, screw plug immersion heaters and tubular heaters. For more information about tubular heaters and process assemblies consult your local Watlow sales representative.
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Inconel® and Incoloy®are registered trademarks of Special Metals Corporation.
Teflone® is a registered trademark of E.I. du Pont Nemours & Company.
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