Heatco supplies Industrial Flanged Immersion Heaters. Heatco is an ISO 9001:2000 accredited company. The Industrial Flanged Immersion Heaters are used for generating steam and heating gases and liquids in pressure vessels and tanks, flanged immersion heaters are hairpin-bent tubular elements welded or brazed into a flange and provided with electrical enclosures. The Industrial Flanged Immersion Heaters are available in a wide selection of flange sizes and with a variety of electrical enclosures.