Introduction. Mechanical Characteristics of PEX.

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2 Introduction C o n c e p t P i p i n g S y s t e m s Industries (formally Gulf Dura Industries) is committed to continuously develop & maintain the manufacture & supply of world class construction materials, offering technology, innovation, quality, price competitiveness, appreciated clients worldwide. Please take a moment to look at our other high quality product lines: -, PPr water supply systems. -, PVC Drainage Systems. -, PP Silent Drainage Systems. -, Electrical Installation Systems. Cross - Linked Polyethylene (PE-X) which stands for cross-linked(x) Polyethylene (PE), results from chemically adjoining polyethylene molecules in order to improve their properties, especially at high temperatures. This, results in a structure that stays rigid when high temperature is applied, thus raising the thermal stability of the material under load. Cross-linking makes PEX a thermoset polymer, which gives it long-term stability, which greatly increases the environmental stress crack resistance and the resistance to slow crack growth due to deterioration of the material under continuous temperature use. Mechanical Characteristics of PEX. The technical suitability of PEX for water delivery systems has been proven for decades. The conceptpex pipe system is designed for continuous temperatures of 0 C to 70 C, short-term peak temperatures of up to 100 C and a service life of min. 50 years. The cross-linking raises the thermal stability of the material under load. Thus, the resistance to environmental stress cracking, creep, and slow crack growth are greatly improved over polyethylene. PEX pipe is approved for potable hot and cold water plumbing systems and hot water (hydronic) heating systems in all model plumbing 2

3 and mechanical codes across Europe, the U.S. Canada, and virtually the rest of the world. PEX piping systems are durable, provide security for safe drinking water, and use reliable connections Table(1-1), Permissible Working Temperature & Pressure. Working Temperature PN 12.5 Working Pressure PN 16 PN 20 Service life Up to 60 C years From 60 C up to 80 C From 80 C up to 95 C Safety factor of 1.3 is taken into account years years Moreover, conceptpex Pipe shows unique temperature resistance at elevated temperatures and for long service periods and offers a reliable piping system even in the wide application ranges. Resistance to Pressure At room temperature, cross linking greatly improves the resistance of conceptpex pipes to pressure, reducing tendency to creep. At higher temperatures, this is achieved by reducing intermolecular space, and therefore density, required for DIN standards. To meet the heating pipes, a minimum density of to is required. The following diagram shows the service life expectancy which depends on the installed system pressure and pressure changes. Under nominal circumstances, however, the service life expectancy of the pipes is more than 50 years. Diagram 1.1 Temperature and pressure chart for conceptpex pipes. Resistance to Temperature The maximum continuous application temperature of conceptpex The permanent operating pressure is 10 bars application. Although high temperature resistance of conceptpex piping system makes it particularly suitable for hot and cold interior plumbing applications, it also makes an excellent underground water service piping.be sustained for a maximum of 100 hours per 50 years. Physical & Mechanical Properties Parameter Density at 23 C MFI, 190 C/2.16 Kg /5 Kg Mechanical Properties: Tensile Strength Elongation at Break Vicat Softening Temperature Typical Value Unit Test Method g/cm3 ASTM D > 25 > 400 g/10 ISO 1133 MPa % 127 C ASTM D 638 ASTM D 1525 Gel Content > 65 % EN 579 at 23 C of Linear Expansion at 20 C Thermal Conductivity at 23 C 1.8 J/(g K) ISO x ± / C ASTM D 696 W.m- 1.K-1 Above values are typical averages obtained from 18 x 2 mm mono layer pipe specimens which are extruded. These pipe specimens are 3

4 application and included in all of the major model plumbing codes. Corrosion Resistant Brass Fittings Brass components have been widely used in the water industry. When supply of potable water is required, however, and in certain combinations of chloride concentrations in an acidic medium, corrosion of the alloy will occur and is due to the loss of a basic alloying element. To counter this approved by German Water authority DVGW have proven to be effective in resisting this corrosion. These alloys are unique through combining a range of alloying elements including high copper content and small traces of other alloys, and subsequently post processing their microstructure of the alloy to chemically resist the attack of the medium and prevent the brass from corrosion. All conceptpex UV Resistance conceptpex piping system is designed for indoor and buried applications only and is not recommended for outdoor above ground use. Short indirect exposure to sunlight not to exceed days are however, permissible when storing conceptpex the pipes, if stored outside, be shielded from direct sunlight. Like most plastics, the long-term performance of PEX will be affected by UV radiation from sunlight. Although most PEX pipes have some UV resistance, PEX pipes should not be stored outdoors where they are exposed to the sun. Precautions must be taken once the pipe is removed from the original container. In most applications, conceptpex piping system is not normally installed where subjected to UV-radiation. If exposure to UV rays is unavoidable, then the PEX pipes should be buried in the soil or protective UV rays insulation shielding should be installed. Indirect (diffused) and preferred) or approved pipe insulation. conceptpex with the external packaging upon delivery to allow time for storage, transport and installation for a period of up to 6 months in exposed areas. The protective package should not be removed until installation is commenced. Durability Based on extensive testing and material performance over the span of more than 30 years, PEX piping has proven to be a durable material that does not suffer from some of the historical problems associated with metallic piping, such as mineral build-up, and water velocity wear. PEX piping will typically expand if the system is allowed to freeze, and return to its original size when the water thaws. 4

5 cured by immersion in 95 C hot water for 6 hours. Hygienic Properties For the healthy and safe delivery of potable water, the network system used must be free from any in processes used that will be in contact with the water, and there Fire Resistance: conceptpex pipes do not omit toxic gases in dioxin or other lethal or harmful gases such as hydrogen chloride. Fire protection guidelines are set in accordance to national regulations. conceptpex materials Chemical Resistance: Due to the nature of polyethylene, conceptpex pipes are highly chemical resistant at a wide range of temperatures and pressures. The basic cross linked structure physically is resistant to the attack of aggressive chemicals. The material is thus rendered more resistant to permeation and softening by these chemicals. Installation: The installation of PEX pipe is generally easier than rigid pipe. The pipe is lightweight compared to steel or copper pipes, making it easy to transport and safe to handle before and during installation, and as conceptpex pipes are produced in various length coil installation requires fewer chemical, or solder joining is required, saving times and effort. *Warranty: As a statement to conceptpex quality standards, the conceptpex pipes carry a 10 year warranty for any manufacturing faults in all pipes. Quality Assurance Our Mandate conceptpex was established with the mission of providing the highest levels of quality products to its clients. conceptpex pipes are produced according to numerous standards and regulations. Standards and Regulations conceptpex pipes are produced according to DIN and DIN 16893, and with Factory Quality Control Department and independent third party testing agencies conduct routine quality control and quality assurance evaluations to insure the product meets International Standards and hygienic requirements. Compliance with the standards ensures safety and quality for the end user. conceptpex products are made under strict control using the following standards & regulations: DIN General requirements & testing (PE-X) DIN BS EN 1055/ ISO13479 / DIN 1988 DIN DIN 4140 BS 6920 KTW recom Dimensions (PE-X) propagation. DVGW of Practice. (Drinking water supply systems; materials, components, appliances, design & installation) connection. Insulation of service installations. safety management system. Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water. German Department of Public are used in the sense of the for drinking water applications. * This warranty covers material or manufacturing defects for products supplied by Concept Piping Systems Industries. This warranty does not cover improper installations in contradiction to instructions or recommendations outlined in this catalogue or circulated by Concept Piping Systems Industries. Concept Piping Systems reserves the right to inspect the site installation through its authorized personnel, within one week from the date of reported written complaint. Failure to comply with these conditions, will automatically void this warranty. 5

6 conceptpex Monolayer piping system conceptpex Monolayer PEX Pipe PN 12.5/SDR 11 Size D (mm) Coil Length (m) N/A Product Range conceptpex Monolayer PEX Pipe PN 16/SDR 9 Size D (mm) Coil Length (m) conceptpex Monolayer PEX Pipe PN 20/SDR 7.4 Size D (mm) Coil Length (m) N/A N/A N/A conceptpex PEX Corrugated Protective Sleeve Recommended for Pex Pipe Size (mm) Internal Diameter (mm) Outer Diameter (mm) Coil Length (m) Note: All SDR11 9 Pex pipe. 6

7 Male Adapter Size (mm) X16-MAD1/2-S x 1/2 X16-MAD1/2-S11 16 x 1/2 Female Elbow (Long neck) with Plastic Box (Blue-Red) Size (mm) X16-FEBN1/2-S7.4/BL 16 x 1/2 X16-FEBN1/2-S11/BL 16 x 1/2 16 x 1/2 16 x 1/2 Note: All SDR11 9 Pex pipe. 7

8 Dimensions of ConceptPEX pipes Outter diameter (mm) SDR PN c SDR 9 - PN c SDR 11-PN c Min Max Min Max Min Max conceptpex pipe allows easy and quick installation of sanitary and heating systems. When installing it is necessary to follow the simple instructions referring to the connections of the pipes with the proper adaptors, bending of the pipes, protection from sun rays, and possible damages of the pipe or the protective sleeve by cracking. connections for the taps must be done using adaptors in the correct size. it is necessary to cut the pipe precisely and perpendicularly to its axis by the proper cutter. the bends have a minimum radius eight times more than the outside diameter of the pipe. other heating sources with high temperatures, as this will cause the pipes to melt. it is recommended that the system be pressure tested to ensure there are no leakages. protected by covering them with concrete, to avoid cracking the pipes and movement of the installation. protected against ultra violet rays, capable of altering the chemical-physical features. protective sleeve, it must be covered by a to expansion of the pipe. article must be used. cut is made. Box. according to the pipe size. Put the nut on the pipe. Make sure the female side of the nut and the pipe end are on the same side. Slide the compression crimp ring over the pipe. tubing. To prevent ring from moving, squeeze the ring slightly with spanner. that each crimped ring be checked with the appropriate gauge. PEX Piping Supports Supports that damage the pipes should not be used. Support should allow free pipe movement. for use with plastic pipes can be used, but should be avoided. In any case, all supports should be inspected for sharp edges before use to ensure that they do not damage the pipe. It is widely recommended that in order to established a consistent and leak free joint, it is necessary to follow conceptpex jointing prepare the pipe. Make sure that a straight 8

9 Types of Manifold Connection Networks Standard Direct Connection Advantage: appliances. Disadvantages: 1. More piping quantity and space is required. Distribution In-Series by the following chart. The chart represents indicate life of the piping system, depending on created in the pipe. Due to smooth pipe surface, conceptpex pipes to the metallic pipes. Moreover, no chemical reaction takes place between the pipe and calcium and magnesium carbonates in the water and no reduction in cross section occurs, thus giving constant pressure losses in long term use. Pressure Loss Diagram for conceptpex Advantages: 1. Less piping required. 2. Fast Installation. Disadvantages: 1. Effect on one appliance on the next. 2. Maintenance requires complete shut-off of circuit. Handling and Storing ConceptPEX Piping System PEX pipes should be stored well covered in order to keep the pipes clean and avoid exposure to sunlight. Consult conceptpex for recommended limits for outside storage. PEX pipes should be stored in a way to protect the system from mechanical damage (slitting, puncturing, etc.) PEX pipes over rough terrain, rocks, or any surface that can cut, puncture, or damage the pipes wall. PEX pipes. Inspect all pipes before and after installation. Cut out and replace all damaged sections. Pressure Loss Diagram for conceptpex Pressure Loss Diagram for conceptpex 80 Pressure Loss The pressure losses in PEX pipes can be assessed 9

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11 NOTES CAT-PEX/TEC/ENG-R4 11