Graham Hart (Process Technology) Ltd


With nearly 40 years of experience in the design and manufacture of heat transfer equipment, Graham Hart (Process Technology) Limited is well known for the production of TEMA and non TEMA type heat exchangers including shell and tube,  cross flow and direct contact heat exchangers.

The Company manufacture in a wide a range of materials, from low temperature Carbon Steel to Hastelloy, Nickel and other specialist materials associated with off shore applications and are accredited to ASME U  ISO 9001 and hold a China Manufacturing Licence or 'M' Stamp Certification.

Air Cooled Heat Exchangers

At Graham Hart (Process Technology) Ltd. Custom built air cooled heat exchangers or air blast heat exchangers to meet their customer's  process requirements including full thermal design. Whether it be high pressure oil and gas applications  with plug headers, fully welded headers for hydrogen service or removable cover plate / headers for low pressure, high fouling water applications.

Direct contact condensers can be used for environmental improvement by reducing steam and odour plumes from processes and cross flowor tube bank units can be used for heat recovery.

Air Cooled Heat Exchangers

High Purity Heat Exchangers

Graham Hart (Process Technology) Limited produce high purity heat exchangers in a wide range of materials, including; Hastelloy, Incoloy, Nickel, Cupronickel and Duplex Sainless Steels for the Pharmaceutical industry.


High Purity Heat Exchangers

High Purity Heat Exchangers

Fully drainable, these high purity heat exchangers have a number of design features to make them more hygienic. These features include tube end welding, polishing, electropolishing, hygienic connections and special gaskets.

High Purity Heat Exchangers


As part of our other services, heat exchangers, vessels and other items of process plant can be built to customer’s specification.  Graham Hart (Process Technology) Ltd offer the following other services:

  • Insulation
  • Fluorocarbon Lining                             
  • Phenolic Resin Lining
  • Stress Relieving
  • Shot Blasting

Other Services

Other services include:

  • Special Paint Finishes
  • Stainless Steel Polishing
  • Sealing
  • Nitrogen Purge
  • Crating
Other Services

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