Heat Transfer – S.A. • Manufactured in accordance with ASME VIII Code of Practice, from mild steel, or stainless steel on request. Certification of vessels by an Independent Test Authority is also available on request. • All mild steel vessels are offered standard with a Sigmarite internal protective lining or with Phenoline 1205 as a protective lining for aggressive water areas. Galvanized vessels are also manufactured on request. • Water heaters are insulated with 50mm thick IW12 fibre wool, and are clad with 0.6mm galvanized sheet metal. Both Stainless steel or Aluminum cladding are also available on request. • The water heaters are supplied standard with Incolloy immersion elements. • Dual thermostats with Control and Over temperature features are fitted where required. • Control Panels with IP54 protection enclosures as standard, are fitted and wired to the elements, or are available as a wall mounted option. • All units fitted with an over temperature/over pressure (TP) valve. • All vessels are manufactured as standard for 400kPa pressure, with higher or lower pressures available on request.

GMS manufacture calorifiers using the following standard materials: • Solid Copper • Copper-Lined Steel • Galvanized Steel • Stainless Steel • Glass /Polymer Lined Steel GMS calorifiers have an internal U-tube battery manufactured from materials to suit the shell & application. The battery consists of heat exchange tubes, expanded into the tube plate. The standard type of tube used is 'low-fin integrand copper'. This is a copper tube with fins on the outer wall which increases the surface area of the tube. U-tube batteries are specified more on larger clarifiers as they can be removed for inspection and cleaning and they can also work at higher temperatures and pressures than coils found on indirect cylinders.

Use of Pacific • High quartz density glass lined steel tank • Coppersheathed heating element • Magnesium anode for optium protection of the tank against corrosion • Optimised inlet diffuser for the best use of the quantity of hot water • Compact size water heaters • Additional passive anti-corrosion protection.