The Caloritech™ FPH Flanged Pipe Insert Heater (also known as an insert tank heater) is uniquely designed to heat storage tanks containing viscous, corrosive or heat sensitive materials including asphalt, tar, fuel, oils, paint and glue. The FPH provides a safe, cost-effective low maintenance solution for tank heating. By enclosing the heating elements within a sealed pipe insert, elements do not come in direct contact with the heated product and elements can be removed for servicing while the tank and its contents remain in service.