24 7 10 8 6 2 5 3 17 18 19 4 14 1 13 15 16 9 11 12 X Nordic wires insul white 23 22 21 20 17 Cu wires insul green Sensor wires NiCr insul red 21 8 2014 FLEXWELL district heating cable FHK Subject to technical changes 5 320 Connector PN 16 Types 98 171 to 147 220 versions A and DE 1 Note For pressure tests in a partially filled trench or with unsupported connectors max permitted pressure 0 5 bar overpressure Nominal widths pipe connection dimensions FHK type 98 171 127 220 147 220 98 220 Comparable nominal width DN 80 100 125 Pipe connection dimensions mm 88 9 x 3 2 114 3 x 3 6 139 7 x 4 0 Ty pe A Heating Type DE Sanitary special design Flange connection dimensions after PN 16 Special version available for domestic water pipes Figure 2 Types of execution for the connector Figure 1 Connector type A Structure 1 Face ring 2 Support socket type A or DE according to choice 3 Lead sealing ring 4 Inner wire ring 5 Outer wire ring 6 Flange ring 7 Locking screw 8 Washer 9 Hexagon nut 10 Hexagon nut with transverse bore 11 Sealing wire 12 Lead seal 13 Folded collar 14 Strain washer 15 Permanently plastic synthetic strip 16 P E anti corrosion strip 17 Silicone pipe 18 Cable leadthrough R 1 4 19 Copper sealing ring 20 Monitoring wires 21 Insulation 22 Comp ression joint 23 Shrink hose 24 P rotective cap The FHK connector Figure 1 is a connecting component specifically designed for FLEXWELL district heating cables It is used to make all connections on pipe installations in buildings and shafts and also for through type and T joints FHK 5 305 and FHK 5 300 Two variants of the connector can be supplied Figure 2 When delivered the pipe ends are protected with plastic caps to prevent impurities from entering the inner pipe Type A connector is intended for hot water pipes The type DE connec tor is additionally available in a special version for domestic water pipes It is supplied with a PTFE sheathed IT seal This P TFE sheath must not be removed or damaged The monitoring wires pass through a watertight exit on the connector These connectors can withstand loads of up to nominal pressure stage PN 161 at a maximum temperature of 150 C Detail X

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