Multi-tube heat exchanger XLG® M

liquid/liquidgas/liquidstainless steel

Multi-tube heat exchangers developed for hygienic/sanitary applications in the food, dairy and beverage industry. The fluids may be viscous and may also contain limited quantities of pulp and/or fibres. Description XLG®M Multitube heat exchangers are manufactured entirely from stainless steel and consist of a bundle of corrugated tubes mounted within a corrugated outer tube (which forms the outer shell). The fluid to be treated (the product) flows through the interior of the tubes forming the tube bundle and the service fluid outsider the inner tubes, through the shell. All product wetted surfaces, including the welds, have a surface roughness Ra < 0.8 µm and are therefore able to process food products under the normal hygiene regulations. Such processes include pasteurisation, high temperature sterilisation, thermal treatment for aseptic packaging etc. Materials of construction All product wetted components (interior tube and bends etc.) are manufactured from AISI 316L stainless steel but for more aggressive fluids a range of Duplex stainless steels are also available. The service side components are normally made from AISI 304 stainless steel but AISI 316L and Duplex steels may be used when required. Areas not in contact with the working fluids are normally constructed from AISI 304 stainless steel. Silicone rubber is used for the O ring seals and connection gaskets or seals but a wide range of alternative elastomers are available when specific applications require them.