PE Pipe (Polyethylene)

Transcription

1 PE Pipe (Polyethylene) Revaho Revaho has been producing high-quality polyethylene (PE) pipes for horticulture, industry, drinking water and sewage systems, recreational and sports facilities, and applications with heating since PE pipes can be outstandingly used where flexibility and a high impact strength are required. PE has good resistance to acids, bases, non-aromatic hydrocarbons and salts. Strict demands on starting materials, production methods and control have ultimately led to the quality necessary for a reliable and durable product meeting the latest applicable KIWA (drinking water), GASTEC QA (gases) and/or KOMO (sewage) standards. Polyethylene in various strengths Polyethylene is available in various classes and is frequently specified with a number indicating the minimum tensile strength of the material in N/mm² at 20 C over 50 years: PE40, PE63, PE80 and PE100. Colloquially we often speak of CPE, LDPE, MDPE and HDPE. Those are more general terms, however, and say nothing about the strength of a PE pipe. Advantages of polyethylene PE is a very strong and durable material with a good resistance to chemicals. It is very good for welding to produce 100% pull-resistant and watertight joints. PE is UV-resistant and has a temperature range of -30 C to 60 C. For LDPE we recommend max. 40 C and for HDPE max. 60 C, with decreasing maximum pressure. Exposure to high temperatures will shorten the service life. PE can be used underground and above ground and is frost-resistant. Larger diameters are preferably installed underground in view of the expansion and shrinkage of PE under the influence of temperature fluctuations. The material is easily recyclable and therefore better for the environment. PE generally has larger wall thicknesses than e.g. PVC. This offers greater safety in combination with the toughness of PE. PE is permeable to many gases (oxygen) and liquids (oils, solvents). This means that molecules of gases and liquids can migrate through the wall into the medium. The water in the pipe can thus absorb oxygen over the course of time (and therefore cause corrosion to metal parts of the pipework). Any contaminants in the ground can make drinking water unsuitable for consumption (such as bromine, aromatics). Diameter : mm Pressure class : 1-16 bar Temperature range : -30 C to 60 C Bulk density : g/cm³ (HDPE) : g/cm³ (LDPE) Coefficient of expansion : LDPE (PE40) 2.3 cm/100 m per C : HDPE (PE63/80/100) 1.0 cm/100 m per C Maximum wall tension : 4.0 N/mm² (PE40)* : 6.3 N/mm² (PE63)* : 8.0 N/mm² (PE80)* : 10.0 N/mm² (PE100)* * MRS value: Applicable standard at 20 C, over 50 years 4.1

2 Maximum admissible pressure for HDPE The maximum admissible pressure for HDPE pipes depends on the pressure class (DIN standard) and temperature. The chart below shows the pressure/temperature relationship for HDPE over a service life of 50 years. The chart is based on DIN 8074, Table 5. For example: PN2.5 means that the maximum admissible pressure is 2.5 bar at 20 C for 50 years Pressure (bar) Temperatur e ( C) PN6 PN8 PN10 PN12,5 PN16 Maximum admissible pressure for LDPE The maximum admissible pressure for LDPE pipes depends on the SDR class (KIWA standard) and temperature. The chart below shows the pressure/temperature relationship for LDPE. The chart is based on KIWA BRL-K17105, page 10, points and Pressure (bar) Temperature ( C) SDR21 SDR19.4 SDR17 SDR13.6 SDR11 SDR9 Quality comes first Quality has a high priority at Revaho. The goods produced have to satisfy exacting demands. Several inspections and tests are performed in order to be able to guarantee the quality. Revaho has a well-equipped laboratory for this with the right apparatus to be able to carry out all the necessary inspections and tests in accordance with the requirements of the various standards. The most important standard inspections and tests are: Incoming inspection of the raw materials: On delivery, the raw materials are tested to determine whether they satisfy the specified requirements and can thus be used for production; Production control by the operators: During production, the operators monitor the production parameters; Inspection in laboratory: Random samples taken during production give additional assurance of the quality of the produced pipe; 4.2

3 Release inspections performed by the laboratory: After production, all polyethylene orders produced are tested for: - Bursting pressure [EN 921] - Tensile strength [ISO 6259] - Leak-tightness [ISO 1183] - Stress cracking [ISO 8796 and ASAE S435] - Dimensions and appearance [NEN-EN and BRL K17105 KIWA] With these tests it is possible to supply the consistent and reliable high quality that forms the basis of Revaho s success. Certifications and standards, KIWA, GASTEC QA, KOMO certificate Revaho has held the KIWA product certificate for PE40, PE80 and PE100 since The standards that we have to satisfy are: KIWA NEN-EN : European drinking water standard BRL K17105 KIWA (formerly BRL K533-03) Revaho has held the GASTEC QA inspection criteria No. 8 certificate since The standards that we have to satisfy are: GASTEC QA NEN-EN-1555 PE80 certificate Revaho has held the KOMO product certificate since The standards that we have to satisfy are: KOMO NEN-EN : European standard for plastic piping systems for general purposes, drainage and sewerage BRL As far as the classification and mechanical requirements are concerned, the requirements for BRL are the same as those in NEN-EN 13244: "Plastic piping systems for buried and above-ground pressure systems for water for general purposes, drainage and sewerage - Polyethylene (PE)". The authority monitors Revaho to determine when the above standards are observed. This involves an inspector from KIWA / GASTEC QA coming to inspect the documentation and measurement results several times a year. The inspectors carry out random sample checks, examining pipes taken from stock and comparing the results with the values documented by Revaho. The KIWA / GASTEC QA laboratory also carries out various inspections, such as pressure tests on pipes produced by Revaho. Over the course of the years, a quality system has been established that guarantees the reproducibility of the quality and that meets the KIWA and GASTEC QA requirements. An important fact is that all non-certified products manufactured by Revaho are also tested and handled according to the same strict standardisation. Standards for PE pipes (including KIWA, GASTEC QA and KOMO) These pipes include: - HDPE - LDPE - Dripper hose - Fogger hose - SportsPro100 - Eco-irrigation - EcoNaff (heating) - Heating hoses (greenhouse and underfloor heating hoses, Naff3 pipes and geothermal heat loops) These pipes are inspected for the same points as the certified pipes. 4.3

4 Because the pipe has a specific application, Revaho has established critical works standards for this that guarantee the quality. A classification (PE40, PE63, PE80 and PE100) can be assigned to non-certified pipes so that their working pressure can be determined. Traceability All production runs are assigned a unique number. This unique number is printed on the pipe and also used in all production and inspection documents. All the data are stored according to this number and kept for 10 years. In the event of complaints, the production history can be traced back using this order number. Availability The possibilities offered by our production department are very broad. PE pipes can be produced for a very large number of applications and in a very wide variety of dimensions, pressure classes and wall thicknesses. The availability is indicated in the price list by a code. Article code A : Standard article, available from stock. Article code O : Related articles, delivery time is dependent on the production of the standard article. Article code P : Product on demand: Production only above a minimum quantity. Ask Revaho for the possibilities. Joints for polyethylene Well-known joining techniques for connection polyethylene pipes to one another are (see also chapter "PE fittings"): Electrofusion welding Butt welding or butt fusion welded Compression joints Saddles Connecting flanges Wall thickness table of classified PE pipe in mm Diameter (mm) PE100 PE100 PE100 PE100 PE40 PN8 PN10 PN12.5 PN16 PN6.3 SDR21 SDR17 SDR13.6 SDR11 SDR Installation & maintenance Use the right fittings for the installation of the PE pipes, and/or install the pipes by means of electrofusion welding and/or butt fusion welding. Always observe the correct procedures. Specific equipment has to be used for joining PE pipes. See also chapter "PE fittings". Note: Never use soap-based products during assembly and use with PE material. 4.4

5 PE100 pipe Revaho PE100 pipe is the standardised pipe for general purposes with the physical characteristics according to NEN-EN The pipe is produced as standard in various PN classes. The pipe can be widely used for irrigation installations and other applications where no certification is required. PE100 pipe is tested according to the same standards as certified KIWA pipe, but is not suitable for drinking water. PE100 is used for larger diameters and is generally a harder hose or pipe. Characteristics Standard PE100 SDR21 to SDR11 Not for drinking water applications : General PE100 pipe is used for the transport of water through main and distribution lines in irrigation systems in (greenhouse) horticulture, agriculture and fruit growing. PE100 pipe is also used for frost mitigation, water supplies for animals and for directional drilling. Many other applications, such as transport lines for mat heating, protective conduits for cables or PVC lines or as floaters are possible. General PE grade : PE100 Pressure class / max. pressure : PN8 / PN10 / PN12.5 / PN16 Standards : Dimensions and testing according to NEN-EN and NEN , not suitable for drinking water applications Diameter : 20 to 250 mm Appearance : black pipe with imprint SDR and PN class 4.5

6 and pipe lengths for PE100 pipe PE100 PN8 SDR21 PE100 PN10 SDR17 PE100 PN12.5 SDR13.6 PE100 PN16 SDR11 diameter (mm) 20 x x x 25 x x x x x x 32 x x x x x x x x x 40 x x x x x x x x x x x x 50 x x x x x x x x x x x x 63 x x x x x x x x x x x x x x x x 75 x x x x x x x x x x x x x x x x 90 x x x x x x x x x x x x x x x x 110 x x x x x x x x x x x x x x x x 125 x x x x x x x x x x x x x x 160 x x x x x x x 200 x x x x 250 x x x x L = Supplied in straight lengths x = Producible See price section for availability R = Supplied in coil Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. Fogger hose Specially for fogger installations, a PE80 hose has been developed with deviating wall thickness and PE composition so that the hose can be punched for the installation of foggers. A higher working pressure is required for installations with foggers. The fogger hose meets this requirement. Characteristics Fogger hose PE80 is made from raw materials specially selected for applications with foggers In fogger installations or for other applications where a punchable hose is required that can also withstand higher pressures. PE grade : PE80 Pressure class : 8 bar Diameter : 20 mm, wall thickness 1.2 mm Appearance : Black pipe with imprint PE80 4.6

7 LDPE pipe Revaho In addition to HDPE pipe, there are also a wide range of possibilities with LDPE pipe. LDPE has a slightly lower density and is therefore more flexible in use. LDPE is used for smaller diameters with different maximum working pressures. General characteristics LDPE pipe: diameters 5 to 63 mm Resistant to solid and liquid fertilisers and chemicals used in horticulture Sufficiently flexible and corrosion-resistant General applications LDPE has a wide array of fields of application in irrigation systems, mat and underfloor heating or other transport pipelines. The pipe is also used as protective conduit for cables or PVC pipes or as a driver to support moving covers. Dripper hose A specific LDPE hose is available for the installation of drippers, sprinklers and PE hoses. This dripper hose is made from a special composition of raw materials giving it the ideal properties for use as a dripper hose. The hose can be punched for the installation of drippers or sprinklers. Before delivery, dripper hoses undergo a stress cracking test according to standard ASAE S435, a tensile test according to NEN-EN and a pressure test according to NEN-EN 921. Dripper hoses are available in both black and black/white. Black/white hose reflects the majority of the incident light, thus reducing heating of the hose due to sunlight, and hence the heating of the irrigation water. Black/white PE hose is produced to the same standard as black PE pipe. Dripper hoses can be supplied cut to length. Where possible, several lengths are installed on a reel with a length of blind hose in between the lengths for simple installation on the distribution lines. Dripper hoses can also be supplied as whole coils. Dripper hose characteristics Diameters 16 to 32 mm, black/white and black Made from a special composition of raw materials for application as dripper hose with good sealing effect Possibility of automatic punching and/or installation of drippers Dripper hose application In dripper, sprinkler or other irrigation installations where a punchable hose is required. For use with i.a. Kameleon, Cobra, CNL, Bubbler, Capillary, Capinet and Woodpecker drippers. In irrigation systems, this hose is used where sprinklers are fitted using barb/superstart connectors (e.g. DAN Bridgeless and Mamkad sprinklers). 4.7

8 General Dripper hose PE grade : various grades : LDPE Max. working pressure : up to 8 bar : 4 bar Standards : tested according to works standard : tested according to works standard Diameter : 5 to 63 mm : 16 to 32 mm Appearance : black pipe : white or black pipe (imprinted with diameter and wall thickness) (imprinted with Irrigation 4 bar ) Formula for SDR value The SDR value can be calculated from the outside diameter and the wall thickness using the formula below. Outside diameter / wall thickness = SDR The pressure class can then be found in the table. SDR and pressure classes* SDR NP (bar) * According to KIWA BRL-K17105, page 10, points and 4.5 Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. 4.8

9 PE100 with KIWA Certification Revaho Revaho is a certified producer of PE100 pipe and hose with KIWA certification, recognisable from the blue stripe, that are used for drinking water distribution in public and private networks. Available in sizes from 20 to 250 mm. Drinking water applications must be KIWA-certified. Characteristics KIWA-certified PE100 pipes Various pressure classes Only pipe with KIWA marking (blue stripe) may be used in drinking water pipes. Use also fittings with KIWA certification for assembly. PE grade : PE100 Pressure class : PN8 / PN10 / PN12.5 / PN16 Certification : KIWA-certified Standard : NEN-EN Appearance : black pipe with blue stripe and imprint KIWA with SDR and PN class and pipe lengths with KIWA certification PE100 PN8 SDR21 PE100 PN10 SDR17 PE100 PN12.5 SDR13.6 PE100 PN16 SDR11 diameter (mm) 20 x x x 25 x x x x x x 32 x x x x x x x x x 40 x x x x x x x x x x x x 50 x x x x x x x x x x x x 63 x x x x x x x x x x x x x x x x 75 x x x x x x x x x x x x x x x x 90 x x x x x x x x x x x x x x x x 110 x x x x x x x x x x x x x x 125 x x x x x x x x x x x x x x 160 x x x x x x x 200 x x x x 250 x x x x L = Supplied in straight lengths x = Producible See price section for availability R = Supplied in coil Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. 4.9

10 CPE Pipe with KIWA Certification Revaho Revaho is a certified producer of CPE pipe with KIWA certification, recognisable from the blue stripe, that are used for drinking water distribution in public and private networks. The CPE pipe is frequently used for the smaller sizes and is more flexible that PE100 pipe with KIWA certification and is therefore easier to install. Drinking water applications must be KIWA-certified. Characteristics KIWA-certified CPE pipe Available in smaller sizes: 16 to 63 mm Only pipe with KIWA marking (blue stripe) may be used in drinking water pipes. Use also fittings with KIWA certification for assembly. PE grade : CPE (PE40) Pressure class : PN6.3 Certification : KIWA-certified Standard : NEN-EN Appearance : black pipe with blue stripe and imprint KIWA with SDR and PN class and pipe lengths with KIWA certification CPE40 PN6.3 SDR9 diameter (mm) 16 x x x 18 x x x 20 x x x 25 x x x 32 x x x 40 x x x 50 x x x 63 x x x R = Supplied in coil x = Producible See price section for availability Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. 4.10

11 PE100 Pipe with KOMO Certification Revaho Revaho is a certified producer of PE100 pipe and hose with KOMO certification, recognisable from the brown stripe. These pipes and hoses are intended for applications in the infrastructure and building sector. Characteristics PE100 pipes and hoses KOMO-certified for the building sector KOMO pipe (brown stripe) is used for e.g. pressurised pipework in sewage systems PE grade : PE100 Pressure class : PN10 / PN12.5 / PN16 Certification : KOMO-certified Standard : NEN-EN Appearance : black pipe with brown stripe and imprint KOMO with SDR and PN class and pipe lengths with KOMO certification PE100 PN10 SDR17 PE100 PN12.5 SDR13.6 PE100 PN16 SDR11 diameter (mm) 32 x x x x x x x x x 40 x x x x x x x x x 50 x x x x x x x x x 63 x x x x x x x x x x x x 75 x x x x x x x x x x x x 90 x x x x x x x x x x x x 110 x x x x x x x x x x x x 125 x x x x x x x x x x x x 160 x x x x x x 200 x x x 250 x x x L = Supplied in straight lengths x = Producible See price section for availability R = Supplied in coil Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. 4.11

12 PE Pipe with GASTEC Certification HDPE pipes and hoses with yellow stripe are intended for transport of gas on both private and public property. Gas pipes have GASTEC QA certification. Characteristics HDPE pipe and hose Certified with GASTEC QA approval Pipe with GASTEC QA certification (yellow stripe) is used exclusively in gas pipelines. PE grade : PE80 / PE100 Pressure class : NP4 / NP8 SDR class : 17 / 13.6 / 11 Certification : GASTEC-QA certification Standard : NEN-EN Unit : in lengths of 10, 50 and 100 metres on coil Appearance : black pipe with yellow stripe or completely black pipe and imprint GASTEC-QA with SDR and PN class Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. 4.12

13 Eco-irrigation Revaho Revaho has developed the "Eco-irrigation" specially for outdoor irrigation. This is a black HDPE pipe with grey stripe. Eco-irrigation is tested according to the applicable standards for PE80 pipe. Characteristics Durably produced pipe Made from selected reclaim grades Special blends for optimum characteristics and long service life Lightweight hose, ideal for export Eco-irrigation is outstandingly suitable for outdoor irrigation for outdoor crops PE grade : HDPE Diameter : mm Max. working pressure : 6.3 bar Appearance : black pipe with grey strip and imprint Eco-Irrigation, diameter and pressure class Standards : PE80 standard (according to NEN-EN and NEN-EN ), not suitable for drinking water applications and pipe lengths for Eco-irrigation HDPE 6.3 bar SDR21 diameter (mm) 32 x x 40 x x 50 x x 63 x x x 75 x x x 90 x x x 110 x 125 x 160 x 200 x 250 x L = Supplied in straight lengths R = Supplied in coil x = Producible - other sizes on request See price section for availability Installation & maintenance Note: Never use soap-based products during assembly and use with PE material Eco-irrigation is not suitable for punching Standard PE couplings must be used with this pipe Eco-irrigation is intended for outdoor irrigation 4.13

14 PE heater pipe Revaho PE pipes can be used as heater pipes. Heater pipes are characterised by a higher heat resistance. Black/white heater pipe is a black HDPE pipe with white sheath. The hose is not diffusion-tight, the PE wall is permeable. Oxygen for example can thus pass through the wall. We recommend protecting the central heating installation against oxygen by using e.g. a stainless steel heat exchanger. Characteristics Heater pipe with high heat resistance for i.a. greenhouse horticulture, concrete floors and sports fields Not standardised or certified Not diffusion-tight All heater hoses are pressure-tested with compressed air as greenhouse heater hose The greenhouse heater hose is an HDPE hose that is used to selectively bring extra heat to the crop or root area. If the hose is suspended, it must be sufficiently supported to prevent sagging. The choice of wall thickness depends on the desired heat output and pressure class. This hose has a higher heat output due to the thinner wall. The white greenhouse heater hose has a white sheath. as underfloor heater hose Underfloor heater hoses are used e.g. in concrete floors for ebb and flood systems. The most common sizes are the 20 and 25 mm diameter hoses. These hoses are available with different wall thicknesses so that the right hose can be chosen for every application. Hoses with larger wall thicknesses are resistant to higher pressures and have a lower heat dissipation coefficient so that longer lengths are possible. Underfloor heater hoses with a wall thickness or 2.2 or 2.7 mm are therefore preferred. as Naff3 pipe Specially for heating and keeping sports fields free of snow, Revaho has developed a field heater hose that maintains its characteristics at a higher temperature over a longer period and at higher pressure (5 years, 50 C, 5 bar). Ask Revaho for the possibilities. for EcoNaff heating As field heater hose for soil-grown crops such as asparagus. This hose has a slower heat transfer due to the larger wall thickness. Greenhouse heating hose Underfloor heating hose Naff3 pipe EcoNaff heating PE grade PE100 / PE80 LDPE HDPE LDPE Max. working pressure bar Different pressure classes depending on diameter and wall thickness Diameter mm standard 25, 32, on request 20 and and Max. water temperature C Outside white or black pipe black pipe black pipe black pipe Heat diffusion W/(m.K) Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. 4.14

15 PP heater pipe (corrugated) Corrugated heater hose is made from polypropylene and is used as a heater hose on, for example, growing racks or in/on the ground as soil/root heater. By supplying the heat where it is needed, for example to the roots, the room heating temperature can often be reduced, allowing costs to be saved. The raw materials for this pipe are 100% virgin materials. This makes the pipe resistant to higher temperatures. We recommend using the pipe up to 50 C, as this prolongs the service life. Thanks to the blending with carbon, this pipe has a good resistance to UV radiation. This hose can also be suspended. These hoses are also increasingly being used to heat cold water using sunlight. In this case a spiral is laid on the roof in the sun. Characteristics Large wall surface area / heat transfer Thin wall, allowing a better heat exchange between water and air Easy to install Heater hose on, for example, growing racks or in/on the ground as soil/root heater. Material : PP (polypropylene) Outside diameter : 25 mm Inside diameter : 20.2 mm length : 500 metre Rec. working pressure : 1 bar Rec. working temp. : 50 C Max. pressure : up to 3.5 bar (see table) Max. temperature : 65 C (with decreasing max. pressure) Pressure loss indication : 0.3 bar / 100 metres Max. support spacing : 2 metres (to support the weight of the water) Special feature : This hose is not diffusion-tight, the PP wall is permeable. Oxygen i.a. can thus pass through the wall. We recommend protecting the central heating installation against oxygen by using e.g. a stainless steel heat exchanger. Maximum pressure Water temperature ( C) Working pressure (bar) Heat diffusion (Watt/m)* * based on a room temperature of 15 C Installation & maintenance We recommend the GF or Supreme compression joints with lip ring for connecting the hoses. 4.15

16 PE geothermal heat loops Revaho Geothermal heat is heat that is extracted from the heat of the earth. It can be used to heat and/or cool any building. A closed-centre well system is used to feed the heat extracted to the heat pump. A closed-centre well system functions on the basis of circulation. Closed lines (borehole heat exchangers) are installed in the ground through which a glycol solution (antifreeze) is continuously circulated. During the circulation process, the glycol solution absorbs the heat and transports it to the heat pump. A very efficient and sturdy system. The advantage of a vertical system is that the risk of damage to the pipes is minimised and only a limited working space is required. Furthermore, geothermal heat exchangers require little maintenance. Revaho supplies tailor-made single or double borehole heat exchangers. The loops can be supplied with any desired length. In order to distinguish clearly between the supply and return line, the heat exchanger has two colours; black PE100 pipe for the supply line and black PE100 pipe with red stripe for the return line. The Revaho borehole heat exchangers for a closed-centre well system are supplied with 180 U-coupling assembled on a reel, pressure tested to 8 bar, in accordance with standard NEN-EN Characteristics dia. 32 and 40 mm Pressure tested at 8 bar Delivered with fitted 180 U-coupling Spacers and sinker weights available separately Borehole heat exchangers with 180 U-coupling are used in closed-centre well systems PE grade : PE100 Pressure class : NP16 / SDR 11 Standards : according to NEN-EN and NEN-EN not suitable for drinking water applications Appearance : black pipe for supply line, black pipe with red strip for return line with imprint Geothermie, SDR and PN class Material : PE100 (180 U-coupling) : polypropylene (spacer) 4.16

17 Flatnet Netafim Flatnet is a fibre-reinforced, flexible and rollable PE hose. It is available with or without preassembled ½ fittings. Flatnet is used in both greenhouse horticulture, outdoor growing and agricultural crops. Depending on the wishes and requirements, this hose is used as main line, distribution line and transport line, as temporary/seasonal line or permanent line. Flatnet offers a cost reduction in the field of transport, storage and assembly. Flatnet is supported by a broad range of fittings. These are available with a pillar/hose clamp connection. The Flatnet is generally installed above ground or underground. The standard tools are sufficient for assembly. Installation can even be carried out in frosty or rainy weather. As no glue is used, the system can be immediately pressurised after assembly. Characteristics Diameters of 2, 3 and 4 Recognisable from the white outside with red stripe Very easy to assemble with simple tools Very compact and easy to transport Up to 80% lighter than comparable pipe systems The white outside reflects sunlight and has a high UV resistance The black PE on the inside provides sufficient protection against the chemicals commonly used in horticulture The reinforcement fibres minimise expansion, and elongation and twisting at changes in pressure are eliminated Thanks to the high working pressure in combination with the ½ connections, this hose is suitable for a large number of installations, such as: Inline dripper systems (also pressure-compensated and self-closing) Outline dripper systems (also pressure-compensated and self-closing) Outdoor sprinkler systems (also pressure-compensated and self-closing) Ebb and flood systems on roller containers Connection : ½ BSP, female Spacing : blind metres (other spacings on request) Diameter : / 53.7 mm (female / male) : / 80.5 mm (female / male) : / mm (female / male) Max. pressure : 3 bar (at 50 C) Material : PE, reinforced with glass fibres Colour : outside white, inside black length : 50 or 100 metres Certification : comparable with ISO Installation & maintenance Note: Never use soap-based products during assembly and use with PE material. 4.17

18 Drainage pipes In some cases, water can cause a great deal of nuisance: A garden is turned into a pool of mud, crops are ruined and fields become impassable. But this can be avoided: Drainage systems can improve the dewatering of your land. Revaho can supply you with flexible drainage pipes for such applications. They are made of PE (polyethylene) or PP (polypropylene) raw materials and can be supplied in various diameters and with a variety of sheaths. They can also be used to discharge gases that may form under plastic liner films. The various sheaths for drainage pipes are distinguished according to an O90 value. The basis for this system is the filter tightness per sheath, indicated as a degree of filtration. The O90 value is a measure of the pore size or the indication of the degree of sand-tightness of the sheath material. The tighter the structure of the sheath, the lower the O90 value. Due to its tight structure, a sheath with a low O90 value can, under certain circumstances, become more quickly clogged than a sheath with a higher O90 value. Plastic sheaths have in theory and in practice a longer service life than organic sheaths (coconut). These plastic fibres are suitable for clay and sandy soils. Coconut can be used in peaty soils and/or sandy soils (no lime). Characteristics of drainage pipes Durable Flexible High resistance to chemicals Resistant to high and low temperatures Recycled / recyclable material with less environmental impact than PVC Characteristics of fittings Available in the most common forms: Sockets, tapers, T-pieces and end caps. Click fittings (snap-in fittings) are also available Made of i.a. PP and PE PP450 Material Filtration PP (polypropylene as base material) 450 micron* Most widely used / particularly on clay soil * The sheath holds back 90% of all particles larger than 450 micron PP700 Material Filtration PP (polypropylene as base material) 700 micron* Open structure / sandy and clay soil * The sheath holds back 90% of all particles larger than 700 micron 4.18

19 Kokos 1000 Material Filtration Coconut (coconut fibres as base material) 1000 micron* Sandy and peaty soil * The sheath holds back 90% of all particles larger than 1000 micron Kokos 700 Material Filtration Coconut (coconut fibres as base material) 700 micron* Sandy and peaty soil * The sheath holds back 90% of all particles larger than 700 micron Water discharge (l/min) with a hydraulic gradient (cm) per 100 metres dia. (cm) Heat resistance Material PE PP PVC Minimum withstand temperature* - 18 C - 25 C + 3 C Maximum withstand temperature* C C + 80 C * These are theoretical values; if in doubt, the material should be tested under the application conditions 4.19

20 KIWA certification 4.20

21 KOMO certification 4.21

22 GASTEC QA certification 4.22