Products

Graham Hart Process Technology specialises in the mechanical and thermal design of bespoke reactor vessels. We provide high-specification solutions—including limpet coils, jackets, and internal coils—engineered to manage precise temperature control and high-pressure reactions. Our reactors are designed to accommodate complex agitation requirements and are fabricated from carbon steel through high-nickel alloys and stainless steels ensuring longevity in corrosive environments.

Graham Hart Process Technology provides bespoke air-cooled heat exchangers (ACHEs) and condensers designed for high-pressure oil and gas, hydrogen service and low-pressure industrial applications. We manage the entire lifecycle—from full thermal and mechanical design to on-site fan balancing—ensuring your equipment meets stringent noise, site and process requirements.

Graham Hart Process Technology specialises in the design and manufacture of high-performance Coil Heat Exchangers. From helical coils for vessel-mounted reactions to "pancake" coils for tank heating and sub-sea cooling, these units are engineered to handle extreme thermal expansion and high volumetric heat ratings. By utilizing curved tube geometry, our coil exchangers induce secondary flow patterns that significantly enhance heat transfer coefficients compared to straight-tube alternatives.

Graham Hart Process Technology specializes in the design and manufacture of high-performance double pipe heat exchangers (also known as hairpin or concentric pipe exchangers). These units are the ideal choice when conventional shell and tube designs are uneconomical or space is at a premium. By utilizing a single tube mounted within another, they achieve true counter-current flow, enabling superior temperature crosses and reliable performance in high-pressure or low-flow applications.

Graham Hart Process Technology designs and manufactures bespoke TEMA-standard shell and tube heat exchangers for high-pressure, cryogenic, and high-fouling environments. With 50+ years of expertise, we provide thermal and mechanical engineering for global process industries.

Graham Hart Process Technology specialises in the bespoke design of Direct Contact Heat Exchangers and Condensers. By eliminating the physical barrier between fluids, these units achieve superior heat transfer coefficients and closer temperature approaches than traditional surface exchangers. They are the ideal solution for recovering latent heat from gas streams and handling processes where fouling or dust contamination would compromise shell and tube designs.

Graham Hart Process Technology specialises in the thermal and mechanical design of Cross Flow Heat Exchangers. By directing fluid streams perpendicular to one another, these units achieve high heat transfer coefficients with a lower pressure drop than standard shell and tube designs. They are the industry-leading choice for recovering energy from industrial flue gases, preheating combustion air, and managing temperature-sensitive process gases.

Graham Hart Process Technology specializes in Multi-Tube Hairpin Heat Exchangers, often referred to as "multis." These units utilize a U-tube bundle within separate shells for each leg, achieving true counter-current flow. This design is specifically engineered to handle significant "temperature crosses" and thermal expansion without the need for expansion bellows, making them the premier choice for high-pressure, high-temperature, and cyclic industrial services.