Flange Heating Systems

Tel: +44 (0) 7837 337570

The Limpet Heating Company Ltd

Innovative Process Heating Solutions for Industry

Flange Heating Systems

Using Limpet Heaters to Keep Flanges from Viscous Blockages

Flanges on pipes, pumps, valves, meters and other industrial process equipment are notorious for freezing up in cold weather and are challenging to heat using traditional heating systems, such as electrical trace heating or hot water. 

Flanges act as big radiators of heat, giving off as much heat as about 1metre of pipework.

Using Limpet Heating's unique 'OmegaLimpet' approach, the problem of viscous products blocking in flanges has been proven to be eliminated.

Flanges can be heated using several different types of Limpet:

  • For accurate temperature control the microprocessor controlled AlphaLimpet
  • For fixed pre-set temperature control up to 250°C the

    OmegaLimpet or BetaLimpet.

  • For variable, accurate temperature control (using a temperature dial), the MaxiLimpet.
  • For larger pumps requiring multiple heaters, an AlphaLimpet or MegaLimpet in combination with 'slave' MicroLimpets or BetaLimpets. 

This is the simplest form of OmegaLimpet. It uses a MicroLimpet as the heat source and the aluminium 'omega' adaptorblock is custome made to fit snugly onto the flange, where it is secured using a long blot that nips the 'lege' together

Flange heating application examples 

We have used the 'Omega' concept in numerous different ways:

  • On a variety of pumps that have one of more flanges and where heating the flanges also heats the pump body by conduction, keeping the product flowing. The types of pumps where this method of heating can be used include centrifugal, diaphragm and screw pumps.
  • On a variety of valves, using a similar concept, and including ball, gate, plug, diaphragm, pinch, butterfly, globe, needle, check (non-return), safety and relief valves.
  • On flow meters, including Coriolis meters, electromagnetic flow meters and turbine meters.
  • On large flanges. In this case, more than one heater and multipe adaptor blocks are used, as showin this this video. 

Example of using twin 'Omegas' on a mass flow meter

Diagrams showing how the AlphaLimpet was fitted to the meter. A photograph of the installation was not possible, as it was installed in a mesh cage. 


  • Compact, economic, cost saving, clean heating.

  • A robust IP67 AlphaLimpet mounted on a Endress + Hauser H200 Promag electromagnetic mass flow meter with two custom-made aluminium adaptor blocks. 

  • The Limpet was set to operate at 70°C.

The Limpet Heating Story

  • This was a new installation for a Dutch company. 

  • The meter was installed in a cage with difficult access.  Because of its relatively small size an unusual shape, it required a bespoke design consisting of two 'omega' adaptor blocks attached to an aluminium plate onto which the AlphaLimpet was attached.  

                                                             Tel: +44(0)7837 337570 or +44 (0)7710 009500    e-mail:  info@limpetheating.com

The Limpet Heating Company Limited

Registered Office: 9 Thorne Road, Doncaster, South Yorkshire, DN1 2HJ, United Kingdom

Company No: 08721292;  VAT No: 173 6814 88