Circulation Heaters also known as "in line heaters" use steel, stainless steel, titanium flanged immersion heaters in many applications. Lube oil and waste oil applications often use steel for circulation heaters as it is fairly inexpensive compared to stainless steel counterpart. In line heaters flowing water use stainless steel, admired for its anti corrosive qualities. Both applications involve using a pump that flows the liquid through a closed pipe circuit (IE. water or glycol solution) that is reheated. A major consideration for this application is viscosity. Heat that is generated by the oil heater allows the liquid to be viscous enough to pass through the circuit of pipes. Circulation heaters come in a range of watt densities that are specifically designed for the medium that is heated. Other useful features found with circulation heaters are drain valves. They can be installed in any location on the vessel and allow for easy maintenance of the heater. The water or oil can be purged through the drain valve allowing for maintenance on the elements. Calcium deposits and other residue can be found on elements and should be cleaned several times a month. Inline heaters also come with the choice of horizontal or vertical mounting depending on your application. Call 1-800-780-3776 for Pricing FEATURES & BENEFITS Features Standard sizes: 1.25" NPT Screw Plug size to 14" daimeter Steel or stainless vessels fitted with 150 lb. / 300 lb. / 600 lb. / 2000 lb. psi flanges Thermal insulated vessels Custom unit sizes Custom-designed to meet your specifications Special sizes, wattages, and materials are available upon request Units are available with larger vessels and heavier flanges Can be supplied with stainless steel parts and special design terminal boxes for heat protection and use in high temperature conditions. Insulated upon request Benefits Easy to install Clean, Compact, Durable Highly energy efficient Provide fast response and even heat distribution Provide greater wattage in a smaller heater bundle Provide maximum dielectric strength Reduce heat loss from the vessel Protect and prevent from thermal insulation Easy mounting support Suitable to general purpose terminal enclosures, NEMA 7, NEMA 4X NEMA 7, and unsafe or explosion proof locations Compatible with standard industry piping and safety standards Designed and built for safety Works in conjunction with Control Panels