They are made of heating elements welded on male screw type Gas, NPT, Metric in any type of material. On request, they came with an automatic safety thermostat or with manual reset. Terminal box with IP65 degree of protection. These heaters can have a terminal box fixed directly on the screw connection (hot head) generally used for normal applications or with the detached terminal box (cold head) from the connection for high temperature applications. The electric heating elements are constructed with high quality 80/20 nickel chrome resistance wire, centered in a metal tube and insulated with compacted magnesium oxide. The element tube material generally used includes:- carbon steel, stainless steels 304, 316, 321 Incoloy 800 & 825, Inconel 600, 625, Titanium, Copper, Monel, and other available materials. Flameproof (Explosion proof) industrial flanged and screwed immersion heaters for zones 1&2.
Hazardous areas, gas groups IIA, IIB&IIC temperature class T1 to T6.
The elements are either welded or brazed to the flange, which is available in a variety of materials to suit the element sheath and the application. Connection flange type UNI or ANSI or a Customer’s drawing. For Applications where the operating temperature is not high the terminal box is attached directly to the flange. For high temperature the terminal box is stood off varying distances depending on the operating temperature. The heaters are complete with thermostat and manual reset safety cut out.