Heater Catalog - Watlow

Immersion HeatersExtendedCapabilityOver-the-Side HeatersExtended Capabilities ForL and O Shaped Immersion HeatersOptionsWattages and VoltagesWatlow routinely supplies over-the-side heaters with240 to 480VAC as well as wattages from 3 to 18kilowatts. If required, Watlow can configure heaters withvoltages and wattages outside these parameters.For more information about this option, contact yourWatlow representative.Sheath MaterialStock O and L shaped over-the-side heaters come withalloy 800 sheaths. 304 or 316 stainless steel and titaniumsheaths are available upon request.For more information about this option, contact yourWatlow representative.Multiple ElementsOver-the-side immersion heaters are configured withthree WATROD heating elements.To achieve a specific kilowatt rating, Watlow canconfigure units with up to 36 heating elements.To order, specify multiple elements, the number ofelements, volts, watts, phase and maximum bundleheight and width.PassivationDuring the manufacturing process, particles of iron or toolsteel may become embedded in the stainless steel oralloy sheath. If not removed, these particles may corrode,produce rust spots and/or contaminate the process.For critical applications, passivation will remove free ironfrom the sheath and other wetted surfaces.To order, specify passivation.Man Hole CoverA man hole cover seals the tank and provides heatermounting. Man hole covers are pre-assembled to theriser. Standard man hole covers are made from steel withother materials available upon request.To order, specify man hole construction, diameterand material.320 WATLOW ®