8 1 2015 BRG PREMANT district heating pipe PRE Subject to technical changes System description 1 General PREMANT is the protected name for a pre insulated steel pipe system used to transport district heat It is a pipe system for direct installation in the ground without channels The system has proven its excellence over several decades and is now recognized as the industry standard for normal cases Depending on the purpose of use PREMANT district heating pipe has a medium pipe made of steel either welded seamless or galvanized or made of stainless steel This makes PREMANT district heating pipe suitable to transport heating water domestic hot water water glycol mix ture condensates and other fluids but not for steam with observation of the temperature Heat insulation for PREMANT district heating pipe is performed by a rigid polyurethane foam which can withstand temperatures of up to 144 C PE HD casing pipe provides external protec tion All three components form one fixed unit so this pipe system is a member of the compos ite pipe family PREMANT district heating pipe is available in three categories of insulation thickness Depending on the dimensions the pipe construction units can be supplied in lengths of 6 12 m or 16 m The construction units and all associated preformed parts such as bends T pieces and fixed points etc are prefabricated in the factory The result is a modular system which is correspondingly easy to plan and install All the components are connected together on site with circumferential seams Supplemen tary insulation of the the weld seam and the weld on ends is provided by means of joints The supplementary insulation work is usually carried out by system suppliers or qualified specialist companies on our behalf During the planning phase we offer support based on our system experience to system users who request this PREMANT district heating pipe and the preformed parts and fittings are manufactured according to the latest standards EN 253 448 488 and 489 All the illustrations are schematic representations that do not correspond to the original components in every detail 2 Range of applications Max temperature for continuous operation TBmax 144 C 160 C Max permitted operating pressure p 25 bar 6 100

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