MLH Mini Line Heaters

Product Applications
  • Amine Storage Tank
  • Chemical Tanks
  • Compressor - Lube Oil
  • Compressor - Water/Glycol
  • Coolant
  • Crude Oil
  • Factory
  • Gear Oil
  • Heat Transfer Oil Tank/System
  • High Pressure Wash System
  • Hydraulic Oil Drums
  • LNG Oil Separator
  • Lube Oil
  • Lube Oil Reservoir
  • Motor Cases/Enclosures
  • Oil / Water Mixture
  • Oil Gearbox heater
  • Oil Purifier System
  • Oil Separator
  • Potable Water
  • Pre-heating Hydraulic Oil
  • Refinery - Lube Oil
  • Salty Atmosphere
  • Slurry Heater
  • Vacuum Pump Lube Oil
  • Water in Distillery
  • Water Tank - Pump Package
  • Water/Cleaning Solution Tank
  • Water/Glycol Reservoir
  • Wax Inhibitor

The range of mini line heaters consist of a screw plug or flanged type immersion heater mounted in a thermally insulated heating vessel, and is designed to efficiently transfer heat to a flowing medium (liquid or air).


  • Weatherproof protected to IP66
  • Choice of built in process temperature sensors and externally adjustable option
  • Mild steel or 316 stainless steel vessel
  • Standard range of high quality Incoloy or stainless steel rod-type elements, designed for water or withdrawable ceramic core elements, designed for oil
  • Maximum allowable working pressure up to 10 barg / 145 psig, subject to design parameters
  • Designed for both horizontal and vertical installation (if mounted vertically, terminal box must be located at the bottom)


Cladding Coated mild steel or 304 stainless steel
Controls A control thermostat is fitted as standard
Design Code Sound Engineering Practice (SEP)
Elements High quality nickel chrome resistance wire compacted in magnesium oxide insulating powder and sheathed in corrosion resistant Incoloy 825/800, 316L stainless steel, withdrawable ceramic core elements housed in mild steel or 316L stainless steel tube
Insulation Mineral wool
Pressure Maximum allowable working pressure up to 10 barg / 145 psig subject to design parameters
Thermostat Pockets One stainless steel pocket brazed to boss
Vessel Mild steel or stainless steel
Voltage Standard units are normally designed for 220V to 254V (1 phase) or 380 to 440V (3 phase)