EXHEAT FP-MLH Ex d Flameproof Mini Line Heaters – ATEX Certified Zone 1 & Zone 2 Hazardous Area

EXHEAT FP-MLH Ex d Flameproof Mini Line Heaters – ATEX Certified Zone 1 & Zone 2 Hazardous Area

EXHEAT Hazardous Area Line Heaters ATEX & IECEx

ATEX Line Heater | | Zone 1 & Zone 2 Hazardous Areas

EXHEAT Ex d flameproof hazardous area line heater is suitable for Zone 1 or Zone 2 (IIA, IIB, IIC) gas group – suitable for Zone 1 or 2 (IIA, IIB, IIC) gas group, or a Zone 21 or 22 (IIIA, IIIB, IIIC) dust group.

EXHEAT FP-MLH flameproof mini line heaters consist of a screw plug or flanged type immersion heater mounted in a thermally insulated heating vessel – specified to efficiently transfer heat to a flowing medium (liquid, air or gas).

Features of EXHEAT FP-MLH Ex d Line Heaters

  • Hazardous Area Certification – certified to ATEX standards
  • Hazardous Area Line Heaters – weatherproof protected to IP66 or NEMA 4 (FP4-MLH only)
  • Choice of built in process temperature sensors and externally adjustable option
  • Mild steel or 316 stainless steel vessel
  • Temperature Range – suitable for ambient temperatures from -40°C to +40°C (FP-MLH) and -60°C to +60°C (FP4-MLH)
  • 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
  • Mounting Options – Designed for both horizontal and vertical installation (if mounted vertically, terminal box must be located at the bottom)
  • FP4-MLH range available with multi approvals

EXHEAT FP-MLH Ex d Flameproof Heaters

hazardous Area ATEX Certification & Installation

Certification: ATEX    II 2 G

Flameproof Line Heaters

ATEX Certified Hazardous Area Line Heaters

Ex d IIC T4 to T6 Gb Zone 1 and Zone 2
EN 60079-0, EN 60079-1, EN 60079-7, EN 60079-31
CU TR (formerly GOST)
*EXHEAT FP4-MLH also certified to ATEX / IECEx, CSA, Inmetro, KGS, CNEx, CCOE


EXHEAT FP-MLH EX D Flameproof line Heater

Technical Specifications & features

Heating ElementsHigh 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
Vessel Mild steel or 316L stainless steel sheath
CladdingCoated mild steel or 304 stainless steel
Line Heater VoltageStandard line heaters are normally designed for 220V to 254V (1 phase) or 380 to 440V (3 phase)
Working Pressure Maximum allowable working pressure up to 10 barg / 145 psig subject to design parameters
Enclosure Cast aluminium alloy with a maximum of one M20 and one M25 cable entry, external and internal earths and screwed terminal cover (EXHEAT FP4-MLH – mild steel or 316 stainless steel)



EXHEAT Stockist – Worldwide Delivery, Competitive Quotations

  • Industrial washing and rinsing
  • Indirect heating of liquids
  • Engine jacket pre-heating
  • Storage tank temperature maintenance
  • Lube oil pre-heating
  • Heating fuel oil and transfer oils
EXHEAT FP-MLH Ex d Flameproof Mini Line Heaters - Dimensions

EXHEAT FP-MLH Ex d Flameproof Mini Line Heaters – Dimensions

Air Heaters | Immersion Heaters | Line Heaters | Thermostats | ATEX & IECEX Certified Electrical Heaters

T&D – Experts in Equipment for Explosive AtmospheresExplosive Atmospheres EX

Trust Thorne & Derrick to specify and supply from stock safe and reliable Heat, Light & Power Products for use in hazardous area locations and explosive atmospheres certified to international standards including ATEX and IECEx – this includes Zone 1 / Zone 2 (Flammable Gas) or Zone 21 / Zone 22 (Dusts) and Class I, Division 1 and Division 2 hazardous area requirements.

Since 1985 as Leaders in ATEX Innovation we can facilitate succession planning for the replacement of obsolete, non-conformant and legacy equipment – we are the provider of innovative solutions to ensure ATEX and IECEx Compliance for Electrical, HVAC & Process Instrumentation systems in the explosive atmosphere industries.

Lighting | Sockets | Glands | Control Stations | Isolators | Push Buttons | Hazardous Area Equipment UK & Export Sales