Watlow Circulation Heaters Watlow – Circulation Heaters Circulation heaters are ideal for flowing air, gas, or liquids through a heated vessel. This method of heating is ideal to save space inside a tank or holding storage of those liquids by flowing that media through a pump and passing it through the circulation heater. 1-1/4 or 2-1/2″ NPT Screw Plug or 3, 4, 5, 6, 8, 10, 12, or 14″ Flange immersion heaters utilized Steel or Stainless Steel Vessels Up to 600VAC in Single or Three Phase Up to Three Megawatt of Power ANSI Flange UL & CSA Certified Nema 1, 4x, & 7/9 Terminal Housings
