Herz Valves UK Ltd. Pre-insulated Pipe Catalogue

Herz Valves UK Ltd Pre-insulated Pipe Catalogue June 2008

This catalogue introduces a range of pre-insulated pipe products for district heating schemes. Herz Valves UK Ltd are the sole UK distributor for Austroflex products. Prices are available on request for this product range. For a full range of Herz products, please consult our other catalogues or the website. Herz Valves UK Ltd are based in Guildford Surrey and have been in the UK for around 40 years formerly trading under the name of Ellis Miller Ltd. The parent company HERZ-Armaturen is based in Vienna Austria and was founded in 1896. HERZ is a privately owned company employing nearly 1,400 people worldwide. Herz valves UK has seen rapid growth over recent years and in 2005 had to move premises to a larger warehouse. We believe we will continue to grow as long as we maintain close contacts with our customers. Therefore we have our own dedicated sales team of 9 sales engineers covering the UK. Herz Valves UK pride ourselves on a commitment to customer services and have a direct sell policy enabling us to offer competitive prices to our customers. With two deliveries a week from Vienna our stock levels are maintained so that we can deliver most products within 3 working days. HERZ operate a Pro-European manufacturing policy and have 7 factories located within the European Union. Quality is important at Herz and is controlled easily since all our manufacturing units can be reached within 2 hours, this has obvious advantages for supply chain management and finished products can reach the UK within a week. HERZ manufacture an extensive range of quality engineered valves and controls for heating and cooling systems. By listening to our customers Herz valves UK have also established specific strategic partnerships to enable us to expand our product portfolio. Coupled with help from the team in Vienna, this has enabled us to produce a range of products dedicated to the UK market. HERZ is proud to offer and guarantee high production standards and reliable products. All work at HERZ is done in accordance with an up-to-date quality management system certified according ISO 9001 and numerous national and international certificates for the entire product range. Herz Valves UK Ltd Progress House Moorfield Point, Moorfield Road Slyfield Industrial Estate Guildford Surrey, GU1 1RU. Web: www.herzvalves.com 1

Table of Contents Single PE-X Pre-insulated Pipe Page 3 Double PE-X Pre-insulated Pipe Page 3 Sliding Sleeve connections Page 4/5 Screwed Compression Connections Page 5 House Entries/Connections Page 6 Fixed Point Brackets Page 6 Dry Protective End Caps Page 7 Rubber Protective End Caps Page 7 Shrink End Caps Page 8 Installing House Entries/Connections Page 8 Installing Rubber/Shrink End Caps Page 8 Insulation Sets Page 9 Pipe Connection Chamber Page 9 Installing Insulation Sets Page 10 Installing Pipe Connection Chambers Installing Cross over Couplings Page11 Page11 Accessories Page 12 Fittings Accessories Page 13 Pipe Laying Page 14 Technical / materials Data Page 15 Technical Data Page 16 Testing Data Page 17 Technical Support Page 18 Installation & Project Management Page 18 2

Flexible Systems with PE-X Medium Pipe Use and Construction: Use: District and local heat, thermal piping, connection piping from house to house, cooling piping Medium pipe: Flexible PE-X Pipe with EVOH oxygen diffusion-barrier, SDR11 Insulation: Closed PE foam Shell pipe: Flexible, corrugated PE-HD-Shell pipe Temperature: Max. +95 C Pressure load: 6 Bar Pipe Lengths: Standard in 100m rolls, fixed lengths rounded to whole metres HT single special dimension straight length 5m HT-Pipes HT-single PE-X PN6 Medium Pipe OD/ID/wall DN OD Insulation Thickness Bend Radius (m) Weight (kg) 115APE090125 25/20.4/2.3 20 90 26.5 0.20 0.70 115APE090132 32/26.2/2.9 25 90 23.0 0.25 0.79 115APE125125 25/20.4/2.3 20 125 43.5 0.30 1.20 115APE125132 32/26.2/2.9 25 125 40.0 0.30 1.29 115APE160140 40/32.6/3.7 32 160 54.5 0.40 2.15 115APE160150 50/40.8/4.6 40 160 49.5 0.50 2.37 115APE160163 63/51.4/5.8 50 160 43.0 0.50 2.70 115APE200175 75/61.4/6.8 65 200 56.0 0.75 3.68 115APE200190 90/73.6/8.2 80 200 48.5 1.00 4.27 115APE200110 110/90/10 90 200 38.5 1.20 5.07 HT-single PE-X PN6 - small Medium Pipe OD/ID/wall DN OD Insulation Thickness Bend Radius (m) Weight (kg) 115APE063125 25/20.4/2.3 20 63 13.5 0.20 0.50 115APE063132 32/26.2/2.9 25 63 10.0 0.25 0.59 115APE090140 40/32.6/3.7 32 90 19.0 0.35 0.93 115APE125140 40/32.6/3.7 32 125 36.0 0.40 1.43 115APE125150 50/40.8/4.6 40 125 31.0 0.50 1.64 115APE125163 63/51.4/5.8 50 125 24.5 0.50 1.98 115APE160175 75/61.4/6.8 65 160 37.0 0.75 3.08 115APE160190 90/73.6/8.2 80 160 29.5 1.00 3.68 115APE160110 110/90/10 90 160 19.5 1.20 4.48 HT-single PE-X PN6 special dimensions / lengths Medium Pipe OD/ID/wall DN OD Insulation Thickness Length (m) Weight (kg) 115APE290125 125/102.2/11.4 100 290 62.5 5.0 10.37 115APE290160 160/130.8/14.6 130 290 45.0 5.0 12.71 HT-Double PE-X PN6 Medium Pipe OD/ID/wall x 2 DN OD Insulation Thickness Bend Radius (m) Weight (kg) 115APE160225 25/20.4/2.3 20 160 50.4 0.50 2.07 115APE160232 32/26.2/2.9 25 160 44.2 0.60 2.25 115APE160240 40/32.6/3.7 32 160 37.1 0.75 2.54 115APE200250 50/40.8/4.6 40 200 45.7 1.00 3.56 115APE160232 63/51.4/5.8 50 200 33.8 1.20 4.23 HT-Double PE-X PN6 - small Medium Pipe OD/ID/wall x 2 DN OD Insulation Thickness Bend Radius (m) Weight (kg) 115APE125225 25/20.4/2.3 20 125 30.9 0.50 1.35 115APE090232 32/26.2/2.9 25 125 24.6 0.60 1.53 115APE160250 50/40.8/4.6 40 160 28.0 1.00 2.97 3

HT-Pipe Sliding Sleeve Connections PN6 A permanent sealed connection using a sliding sleeve which is compressed onto the pipe using a hydraulic press tool. SH-Compression Crossover Coupling PN6 PE-X / BSP thread x s BSP Thread 116SHA025034 25 x 2.3 ¾ 116SHA032001 32 x 2.9 1 116SHA040054 40 x 3.7 1¼ 116SHA050064 50 x 4.6 1½ 116SHA063002 63 x 5.8 2 116SHA075052 75 x 6.8 2½ 116SHA090003 90 x 8.2 3 116SHA110004 110 x 10 4 116SHA125005 125 x 11.4 5 116SHA160006 160 x 14.6 6 SH-Compression Coupling PN6 PE-X / PE-X x s A x s B 116SHK025025 25 x 2.3 25 x 2.3 116SHK032032 32 x 2.9 32 x 2.9 116SHK040040 40 x 3.7 40 x 3.7 116SHK050050 50 x 4.6 50 x 4.6 116SHK063063 63 x 5.8 63 x 5.8 116SHK075075 75 x 6.8 75 x 6.8 116SHK090090 90 x 8.2 90 x 8.2 116SHK110110 110 x 10 110 x 10 116SHK125125 125 x 11.4 125 x 11.4 116SHK160160 160 x 14.6 160 x 14.6 A B SH-Compression Reduced Coupling PN6 PE-X / PE-X x s A x s B 116SHK032025 32 x 2.9 25 x 2.3 116SHK040032 40 x 3.7 32 x 2.9 116SHK050040 50 x 4.6 40 x 3.7 116SHK063050 63 x 5.8 50 x 4.6 116SHK075063 75 x 6.8 63 x 5.8 116SHK090075 90 x 8.2 75 x 6.8 116SHK110090 110 x 10 90 x 8.2 A B SH-Compression T Piece PN6 PE-X Medium X y z 116SHT025yz 25 25 25 116SHT032yz 32 y z 116SHT040yz 40 y z 116SHT050yz 50 y z 116SHT063yz 63 y z 116SHT075yz 75 y z 116SHT090yz 90 y z 116SHT110yz 110 y z x y X = inlet Y = branch Z = outlet z 4

SH-Compression Elbow 90 PN6 PE-X / PE-X x s A x s B 116SHW025025 25 x 2.3 25 x 2.3 116SHW032032 32 x 2.9 32 x 2.9 116SHW040040 40 x 3.7 40 x 3.7 116SHW050050 50 x 4.6 50 x 4.6 116SHW063063 63 x 5.8 63 x 5.8 116SHW075075 75 x 6.8 75 x 6.8 116SHW090090 90 x 8.2 90 x 8.2 116SHW110110 110 x 10 110 x 10 A B SH-Compression Elbow 45 PN6 PE-X / PE-X x s A x s B 116SHW025025 25 x 2.3 25 x 2.3 116SHW032032 32 x 2.9 32 x 2.9 116SHW040040 40 x 3.7 40 x 3.7 116SHW050050 50 x 4.6 50 x 4.6 116SHW063063 63 x 5.8 63 x 5.8 116SHW075075 75 x 6.8 75 x 6.8 116SHW090090 90 x 8.2 90 x 8.2 116SHW110110 110 x 10 110 x 10 A B HT-Pipe Screwed Compression Connections PN6 A non-permanent sealed connection using a split olive which is compressed onto the pipe by tightening a nut. HT-Screwed Crossover Coupling PN6 PE-X / BSP thread Pipe Dimensions OD/ID/s BSP Thread 116SUG025034 25/20.4/2.3 ¾ 116SUG032001 32/26.2/2.9 1 116SUG040054 40/32.6/3.7 1¼ 116SUG050064 50/40.8/4.6 1½ 116SUG063002 63/51.4/5.8 2 116SUG075212 75/61.4/6.8 2½ 116SUG090003 90/73.6/8.2 3 116SUG110004 110/90/10 4 Pipe wall thickness = s HT-Screwed Coupling PN6 PE-X / PE-X Pipe Dimensions OD/ID/s A x B 116SKG025025 25/20.4/2.3 25 x 25 116SKG032032 32/26.2/2.9 32 x 32 116SKG040040 40/32.6/3.7 40 x 40 116SKG050050 50/40.8/4.6 50 x 50 116SKG063063 63/51.4/5.8 63 x 63 116SKG075075 75/61.4/6.8 75 x 75 116SKG090090 90/73.6/8.2 90 x 90 116SKG110110 110/90/10 110 x 110 A B 5

House Entries/Connections The connection of the pipe inside buildings requires the whole pipe, including insulation and shell pipe, to be inserted through the building wall. The pipe system is pushed into the wall and sealed using a shrinking sleeve. The sealing of the wall sleeve as well as the use of bitumen paint should be undertaken by a competent person. House Connections Shell House Entry OD Length 116HEN063 63 90 500 116HEN090 90 125 500 116HEN125 125 160 500 116HEN160 160 200 500 116HEN200 200 290 500 For installation see page 8 Fixed point Brackets In the installation of district heating pipelines with PE-X pipes, fixed point brackets must be attached to both ends of the medium pipe, in order to protect the crossover fittings from shear and traction forces caused by the expansion and contraction of the pipe. Fixed Point Brackets SINGLE 116AFS120 116AFS125 116AFS132 116AFS140 116AFS150 116AFS163 116AFS175 116AFS190 116AFS110 Bracket type Medium FIX PE 1x20 FIX PE 1x25 FIX PE 1x32 FIX PE 1x40 FIX PE 1x50 FIX PE 1x63 FIX PE 1x75 FIX PE 1x90 FIX PE 1x110 Fixed Point Brackets DOUBLE 116AFS225 116AFS232 116AFS240 116AFS250 116AFS263 Bracket type Medium FIX PE 2x25 FIX PE 2x32 FIX PE 2x40 FIX PE 2x50 FIX PE 2x63 House Connection with double pipe. The medium pipes are secured by means of fixed brackets 6

PE-Protective End Caps (Dry Area) Polyethylene protective end caps for internal dry areas as a final connection PE-Protective cap SINGLE Medium Shell 117ENP063032 32 63 117ENP090063 63 90 117ENP125063 63 125 117ENP160110 110 160 117ENP200110 110 200 PE-Protective cap COMBI Medium Pipe OD Shell 117ENP160424 2x25/2x20 160 117ENP160425 4 x 25 160 117ENP160433 2x32/2x25 160 117ENP160437 2x32/1x25/1x20 160 117ENP160434 3x32/1x25 160 117ENP160438 2x40/1x25/1x20 160 117ENP160439 2x50/2x25 160 117ENP160440 2x40/2x25 160 PE-Protective cap DOUBLE Medium Shell 117ENP125232 2 x 32 125 117ENP160250 2 x 50 160 117ENP200263 2 x 63 200 PE-Protective cap DOUBLE COMBI Medium OD 117ENP125223 20 + 16 125 117ENP125224 25 +20 125 117ENP125227 32 +25 125 117ENP125228 40 +25 125 117ENP160426 20 +16 160 117ENP160427 25 +20 160 117ENP160428 32 +25 160 117ENP160429 40 + 25 160 117ENP160430 50 +25 160 117ENP160431 63 +25 160 117ENP200251 50 +25 200 117ENP200264 63 + 25 200 117ENP200265 63 + 32 200 Rubber Protective End Caps EPDM rubber protective end caps for final connections with self protecting lip for the shell pipe Rubber end cap SINGLE Medium Shell 117ENS090063 63 90 117ENS125063 63 125 117ENS160110 110 160 117ENS200110 110 200 Rubber end cap COMBI Medium Pipe OD Shell 117ENS160437 2x25/2x20 160 117ENS160425 4 x 25 160 117ENS160433 2x32/2x25 160 117ENS160437 2x32/1x25/1x20 160 117ENS160434 3x32/1x25 160 117ENS160438 2x40/1x25/1x20 160 117ENS160439 2x50/2x25 160 117ENS160440 2x40/2x25 160 Rubber end cap DOUBLE Medium OD 117ENS160225 2 x 25 160 117ENS200263 2 x 63 200 Rubber end cap DOUBLE COMBI Medium OD 117ENS160230 20 +16 160 117ENS160231 25 +20 160 117ENS160233 32 +25 160 117ENS160241 40 + 25 160 117ENS160251 50 +25 160 117ENS160252 63 +25 160 117ENS200251 50 +25 200 117ENS200264 63 + 25 200 117ENS200265 63 + 32 200 7

Shrink End Caps Shrink end caps for final connections on the shell pipe, the caps are shrunk onto the pipe by the application of heat. Shrink end cap SINGLE Medium Shell 117ENO063016 1 x 16 63 117ENO063020 1 x 20 63 117ENO063025 1 x 25 63 117ENO090016 1 x 16 90 117ENO090020 1 x 20 90 117ENO090025 1 x 25 90 117ENO090032 1 x 32 90 117ENO090040 1 x 40 90 117ENO125025 1 x 25 125 117ENO125032 1 x 32 125 117ENO125040 1 x 40 125 117ENO125050 1 x 50 125 117ENO125063 1 x 63 125 117ENO160040 1 x 40 160 117ENO160050 1 x 50 160 117ENO160063 1 x 63 160 117ENO160075 1 x 75 160 117ENO160090 1 x 90 160 117ENO200075 1 x 75 200 117ENO200090 1 x 90 200 117ENO200110 1 x 110 200 Shrink end cap DOUBLE Medium OD 117ENO125225 2 x 25 125 117ENO125232 2 x 32 125 117ENO160225 2 x 25 160 117ENO160232 2 x 32 160 117ENO160240 2 x 40 160 117ENO160250 2 x 50 160 117ENO200240 2 x 40 200 117ENO200250 2 x 50 200 117ENO200263 2 x 63 200 Shrink end cap DOUBLE COMBI Medium OD 117ENS160230 20 +16 160 117ENS160231 25 +20 160 117ENS160233 32 +25 160 117ENS160241 40 + 25 160 117ENS160251 50 +25 160 117ENS160252 63 +25 160 117ENS200251 50 +25 200 117ENS200264 63 + 25 200 117ENS200265 63 + 32 200 Installing House Connections Push the supplied shrinking sleeve over the outer shell pipe. Put the wall sleeve into the opening of the wall. Push the pipe through the wall sleeve. Push the shrinking sleeve over the wall sleeve. Shrink the shrinking sleeve onto the outer shell and the wall sleeve using a light flame. Installing End caps Rubber end caps Fit the rubber end cap on the end of the pipe using a lubricant. Shrinking end caps Put the shrinking end cap onto the end of the pipe. Shrink the end cap evenly around the entire radius of the shell pipe using a light flame. 8

Insulation Sets Insulation pieces each consisting of: Two half shells PE-HD Mineral Wool -Insulation Sealing material High-grade stainless steel screws and washers Insulation piece for longitudinal connections Length Breadth Height 116ISL001 125/160/200 1170 345 270 Insulation piece for T connections Length Breadth Height 116IST001 125/160/200 1170 750 270 Insulation piece for corner joints 90 Length Breadth Height 116ISE001 125/160/200 750 750 270 Insulation piece for longitudinal connections Trouser joint Length Breadth Height 116ISH001 125/160/200 1170 1380 270 For converting two single pipes into one double pipe Insulation piece for longitudinal connections Double T Length Breadth Height 116ITE002 125/160/200 1170 1450 270 For single pipe house entries from large diameter flow and return pipes Pipe Connection Chamber External diameter Length Width Height Weight (kg) 117ESD200 6 x 125/160/200 980 1640 1330 685 50 9

Installation of Insulation sets Tee-insulation Longitudinal insulation Corner insulation After installing the coupling, site the bottom of the insulation set and the pipes. Put the sealing stripe around the shell pipe. Note: The insulated part of the pipes must be situated at least 10 cm over the half moon of the 200 mm diameter. Put the mineral fibre mat around the uninsulated medium pipes. Put the sealing mastic onto the flange edge (c. 6 mm thick). Put the upper part of the insulation set onto the lower part. Put the screws in and screw them in tightly. 10

Installation of Pipe Connection Chambers Preparing the trench Lay an even and dense layer of sand at the bottom of the trench. If necessary (e.g. because of ground water) install an anchor plate first in order to secure the chamber against buoyancy Traffic load Occasional temporary load without load distribution plate at 500 mm cover: 3000kg (~ 6000kg/m2), e.g. passage of agricultural vehicles. Permanent load on lid up to 500kg (~ 1000kg/ m2) allowed, e.g. parking car. Installation of chambers Push the shrinking hoses over the pipe ends. Saw off the connection in accordance with the dimensions of the shell pipe on the chamber. Install coupling. Push the shrinking hose over the connection and shrink the cross over with a light flame (first shrink the shrinking hose to the chamber connection and then to the shell pipe). Carry out pressure test of the pipe network and place the lid on the chamber. Screw in screws crosswise. Cover the chamber carefully with sand and seal sand in layers (of c. 20-30 cm). Do not use machinery for sealing directly on top of the chamber. Standard cover for chambers is 500 mm, a minimum cover of 300 mm is allowed if there are no direct loads over the chamber. Installation of cross over couplings Pipes Ø < = 75 mm Cut the pipe at right angles. Push the coupling nut and the clamp ring over the pipe. Push the pipe over the cylindrical connection until you reach the base of the thread. Screw the coupling nut onto the thread of the connection. After installing the fittings heat the pipe system to c. 60-80 C using a heat gun and retighten the coupling nut. Pipes Ø >= 90 mm Cut the pipe at right angles. Push the individual parts over the pipe in the order shown in the picture below. Hammer the supporting pipe entirely into the pipe. Push the pipe into the screwing body until you reach the base of the thread. Push the individual parts towards the screwing body. Screw in the flange. 11

Accessories Reducer for insulation sets From / to 116ISR125090 125 / 90 116ISR125063 125 / 63 For reducing shell pipe inside the insulation set 125mm to 90mm and 125mm to 63mm Reduction ring 125/90 one-piece Reduction ring 125/63 two-piece End Cap for insulation sets Diameter Thickness 116ISR125090 125 50 Stop end cap for sealing off the insulation set at one end where the pipe has an isolation valve fitted for further work to be carried out in the future. Repair kit for insulation sets Insulation set type M8 x 40 Bolt M8 Nut Qty Qty 116REP02 Long connection 42 42 84 116REP03 T connection 51 51 102 116REP04 Elbow connection 36 36 72 M8 Washers Qty Track warning Tape Length Width Weight (m) (kg) 116TWB100 250 40 2.0 12

Fittings Accessories T Piece with internal thread BSP 120TIG343434 ¾ 120TIG010101 1 120TIG545454 1¼ 120TIG646464 1½ 120TIG020202 2 120TIG030212 2½ 120TIG030303 3 120TIG040404 4 Elbow with internal thread BSP 120WIG903434 ¾ 120WIG900101 1 120WIG905454 1¼ 120WIG906464 1½ 120WIG900202 2 120WIG900212 2½ 120WIG900303 3 120WIG900404 4 Female Bush BSP 120MIG903434 ¾ 120MIG900101 1 120MIG905454 1¼ 120MIG906464 1½ 120MIG900202 2 120MIG900212 2½ 120MIG900303 3 120MIG900404 4 Female to Male reducer Female BSP Male BSP 211UIA001034 1 ¾ 211UIA114034 1¼ ¾ 211UIA114001 1¼ 1 211UIA112114 1½ 1¼ 211UIA112001 1½ 1 211UIA112034 1½ ¾ 211UIA200034 2 ¾ 211UIA200100 2 1 211UIA200114 2 1¼ 211UIA200112 2 1½ T Piece with external thread BSP 120TAG343434 ¾ 120TAG010101 1 120TAG545454 1¼ 120TAG646464 1½ 120TAG020202 2 120TAG030212 2½ 120TAG030303 3 120TAG040404 4 Elbow with external thread BSP 120TIG903434 ¾ 120TIG900101 1 120TIG905454 1¼ 120TIG906464 1½ 120TIG900202 2 120TIG900212 2½ 120TIG900303 3 120TIG900404 4 End cap BSP 120VIG903434 ¾ 120VIG900101 1 120VIG905454 1¼ 120VIG906464 1½ 120VIG900202 2 120VIG900212 2½ 120VIG900303 3 120VIG900404 4 Female to Male reducer Female BSP Male BSP 211UIA212200 2½ 2 211UIA212100 2½ 1 211UIA212114 2½ 1¼ 211UIA212112 2½ 1½ 211UIA300212 3 2½ 211UIA300200 3 2 211UIA400300 4 3 211UIA400212 4 2½ 13

Pipe Laying Transport Loading and unloading should be done using nylon or cloth belt. Forklifts should use protection hoses. Make sure that outer shells and pipes are not damaged by sharp edges. Trenches When digging a trench put the excavated soil to one side of the trench, so that the pipes can be unrolled on the other side and laid directly into the trench. Laying Pipes Unload pipe bundles at the location where you will start unrolling them. Fix the free pipe end to the ground (e.g. using a sand bag) and unroll alongside the trench. For pipe dimensions of 90/125 mm we recommend to couple pipes before laying them into the sand bed. Please note: Do not drag plastic pipes on the floor, Do not unroll them on top of edges or sharp objects (e.g. stones) Do not go below the minimum bending radius. Trench depth/cover without traffic load min. 400 mm with traffic load min 800 mm Laying in concrete Laying under a road 14

Technical/Materials Data Material: Networked Polyethylene PE-Xa, basic material acc DIN 16892/16893 Networking Type: Peroxide (angel's procedure), type PE-Xa Oxygen diffusion barrier: Organic (EVOH), oxygen porosity <0.10 gs / m3d, according to DIN 4726 Life expectancy: 50 years according to creep behaviour diagram acc. DIN 16892 Ranges of application: Piping systems in sanitation and heating technology, also air, gas, and water supply Properties: Insensitive to pressurized water, low pressure losses, easy to process PE-Xa Medium Pipe Temperature Value Test Standard ( C) Seal - 938 kg/m 2 DIN 53479 Heat Conductivity - 0.41 W/mK DIN52612 Tensile Strength 20 26-30 N/mm 2 DIN 53455 80 18-20 N/mm 2 Elasticity Module 20 ~600 N/mm 2 DIN 5345 80 300-600 N/mm 2 Linear Expansion Coefficient - 1.5 x 10E-4/K - Crystal Melting Area - ca. 135 C - Chemical Resistance 20/40/60 Better than PE-HD DIN 8075 B1 1 Insulation Material: Foam PE-X, closed cell and free of CFC Room weight: ~30 kg / m3 Temperature resistance: -80 C to +95 C Water admission: 1 Vol % after 28 days Heat conductivity: 0.04 W / mk acc DIN 52613, part ÖNORM B6015 1 Material: Highly sealed Polyethylene (PE-HD), corrugated shell system Properties: Highly flexible, resistant against mechanical damages, resistant to corrosion Pressure load: 30 N / mm2 Strain at failure: 600% Heat Losses λ Earth = 1,00 W/mK Temperature Earth = 0,80 m ΔT = (Tv + Tr)/2 - To (K) Tv... Preliminary heat temperature ( C) Tr... Return temperature ( C) To... Earth temperature ( C) Example: Medium pipe double 25/160 Tv = +80 C; Tr = +50 C; To = +10 C ΔT = (80 + 50)/2-10 ΔT = 55 K Heat Loss acc. diagram: 12 W/m The medium pipe double 25 has a heat loss of 12 Watt / double pipe metre. Note: Pipe losses are always in a pipe pair (flow and return) and are dependant on depth, pipe fittings etc. 15

Technical Data 16

Testing Overall System Compression pressure resistance acc. to EN 50086-2-4 Test Type Pipe Tested Req Value (N) Test Value (N) Compression pressure 160/1-40 200 425.5 Compression pressure 200/1-75 200 457.3 Pipes tested had greatest differential between shell OD and medium pipe OD ie. largest Shell and smallest media pipe. Tested to a deformation of 5% Impact resistance acc. to EN 50086-2-4 Test Type Pipe Tested Required Test Result Resistance to Impact 160/1-40 No break Pos/no break Resistance to Impact 200/1-75 No break Pos/no break 800mm falling height, 5 kg/ 5 C Impact object 300mm radius Compression pressure resistance acc. to EN 50086-2-4 Test Type Pipe Tested Test Value (N) Compression pressure 160 131 Compression pressure 200 128 Compression pressure resistance was determined with a deformation of 5% Impact resistance acc. to EN 50086-2-4 Test Type Pipe Tested Test Result Resistance to Impact 160 Pos/no break Resistance to Impact 200 Pos/no break 800mm falling height, 5 kg/ 5 C Impact object 300mm radius Ring Stiffness acc. to DIN 9969 Test Type Pipe Tested Test Value (N) Ring Stiffness 160 138 Ring Stiffness 200 137 Ring Stiffness: Feed speed of the test records 10±2mm ( as a comparison with Compression pressure resistance acc. EN 50086-2-4: 15±0.5 mms) Insulation Sets Ring Stiffness acc. to DIN 9969 Test Type Type Tested Insulation Set Required Deformation Req Value (N) Test Value (N) Ring Stiffness L Insulation set 100mm 200 2610 Ring Stiffness L Insulation set 5% 200 1630 Two kinds of tests were carried out to determine ring stiffness under consideration by two different distortion parameters: 1. Consideration of an absolute distortion of 100mm based on the external diameter. 2. Consideration of a distortion of 5% based on the inside diameter. The tests were carried out under the most unfavourable conditions, i.e. only the PE HD-half bowls in the screwed together state, without insulation or pre-insulated pipes. Therefore, higher set back forces will arise in practice. 17

Technical Support Herz can assist your project with technical support, providing a pipe sizing service taking pressure drops into account which will offer an optimum design for energy efficiency. We can also offer advice on the choice of fittings and joints to help minimize the costs. Installation & Project Management Herz can offer an installation service for the pre-insulated pipe, this could also include the following services: - excavation and re-instatement works, Pressure testing, project management and survey work. Prices available on request Herz Valves UK Ltd reserve the right to change design, specification and prices at any time and without prior notification 18

Herz Valves UK Ltd Progress House Moorfield Point, Moorfield Road Slyfield Industrial Estate Guildford, Surrey GU1 1RU Tel: 01483 502211 Fax: 01483 502025 E-Mail: Web: www.herzvalves.com 19