Circulation heaters provide a ready-made means to install electric heating with a minimal amount of time and labor. This is accomplished by combining heating elements, vessel, insulation, terminal enclosure, mounting brackets and inlet and outlet connections into a complete assembly.
Made from NPT screw plug or ANSI flange heater assemblies mated with a pressure vessel (tank), circulation heaters are designed to heat forced-circulation air, gases or liquids. Ideal for either in-line or side-arm operations, these assemblies direct fluids past FIREBAR® or WATROD™ heating elements, to deliver fast response and even heat distribution.
Watlow® meets virtually all your circulation heater assembly needs with made-to-order units. These units can be made from a wide range of heating element sheath materials, wattages, vessel sizes and materials, pressure ratings, terminal enclosures and controls.
|Material||Maximum Operating Temperatures||Maximum Watt Densities|
|316 Stainless steel||1200||650||120||18.6|
|Catalog screw plug and flange part numbers||
|ANSI B16.5 Class 150 on 4 or 6 inch FIREBAR element flanges and 3 to 14 inch WATROD element flanges||
|FIREBAR assemblies pack more wattage in a smaller heater bundle||
|Compacted MgO insulation filled elements||
|1 inch (25 mm) thermal insulation rated to 750°F (400°C)||
|Heavy-guage steel jacket (shroud)||
|All catalog units rated to ANSI pressure Class 150||
|Standard offering includes units rated for up to and including ANSI pressure class 600 (application review required)||