for potable water supply

Transcription

1 UPONOR INFRASTRUCTURE Uponor System PVC Uponor System PVC for potable water supply Uponor System PVC 209

2 6.3 Uponor System PVC Characteristics The Uponor System PVC is designed for potable water distribution, pressure sewer and process piping system applications. Equipped with pull-resistant joints, this is a safe solution for internal building installations. The system comprises a wide selection of pipes and fittings. The pressure system is made from un-plasticised polyvinyl chloride (PVC), meaning no plasticisers (phthalates) have been added. In addition, the pipes are equipped with integral sockets with seals. The pressure pipes are delivered in 6-metre lengths. Each pipe is equipped with an integral socket with a readyinstalled pressure resistant seal and is delivered with plugs at both ends. The pressure system is manufactured and designed according to nominal pressure (PN) at +20 C. PVC is a long-life, odourless and tasteless thermoplastic. The system s chemical resistance is presented in Table 2.2 of the chapter Materials and Service Life. The Uponor System PVC is ideal for underground pipe network construction. In municipal and industrial applications, the system is highly suitable, for example, for raw water and supply piping, and mains and house connections. Due its smooth inner surface, the PVC pipe is low friction. It is also highly resistant to abrasion by solids within the pipe flow. The head loss chart presented in Figure is used for the hydraulic design of the PVC pressure system. PVC pressure pipes are lightweight compared to many other pipe materials, making them easy to transport, handle and install. 210 Uponor System PVC

3 Key advantages of the Uponor PVC System: Easy to handle Minimal jointing force required Joint tightness High resistance to most chemicals Excellent abrasion resistance Long service life. The long service life reputation of PVC pipes is not based on theoretical calculations alone. PVC pipes have been used successfully for water supply and sewer since the 1930s. PVC pipe technologies have since been continuously developed and improved, based on rigorous material and condition tests and long-term handson operating experience. Today, PVC pipes are used for the distribution of potable water and for wastewater sewer in all climate conditions. Uponor PVC pipes have a size range of mm and pressure grade of PN 10. Size table Size Outside diameter Table grade mm PN X 160 X 225 X 280 X 315 X 400 X 500 X 630 X System and material specifications Properties PVC Unit Standard/test method Density 1410 kg/m 3 ISO 1183 Long-term elastic modulus E MPa ISO 6259 Short-term elastic modulus E MPa ISO 6259 Thermal expansion factor 0,08 mm/m C Thermal conductivity 0,16 W/m C DIN (20 ) Elongation at break % Maximum tensile stress, short-term 25 MPa MRS value 25 MPa Safety factor C (ø 110) 2 EN ISO 1452 / EN ISO 1456 Table Bending radius of Uponor PVC pipe Bending radius of Uponor PVC pipe in the temperature range 5-20 C is 300 x Du, where Du = pipe outside diameter. Uponor System PVC 211

4 Approvals Uponor's grey PVC pipes are quality certified with the Nordic Poly Mark and are manufactured in accordance with the EN standard and Uponor factory standards. Seals Uponor pressure pipe seals are made of SBR rubber. The latest product approvals are presented on the Uponor website. Socket structure Seal cross-section 212 Uponor System PVC

5 Markings Uponor System PVC markings PRESSURE PVC-U 160 x 6.2 PN 10 EN PRESSURE PVC-U 160 x 6.2 PN 10 Manufacturer Application Material: polyvinyl Diameter and chloride (un-plasticised) min. wall thickness grade Nordic Poly Mark EN 1452 ➀ Product standard Potable water approval Production unit Production time: ➀ = Nastola, Finland day/month/year/hour Table Uponor System PVC 213

6 Uponor PVC Pipe Installation The Uponor PVC pipe system installation instructions must be followed, in order to ensure the long-term hygiene, troublefree operation and durability of the pressure system. Jointing Uponor System PVC pipes and fittings are delivered with readyinstalled seals. Both ends of each pipe are plugged, to ensure that the pipe interior remains clean from the factory to the pipe trench. 1. Remove the end plugs. Remove any dirt (soil etc.) by carefully wiping the socket end, spigot end and seal. 2. Brush a thin coat of lubricant onto the spigot end to facilitate coupling. Never lubricate the socket or seal. 214 Uponor System PVC

7 3. Replacing the seal after cleaning: Squeeze the sealing ring into a heartshape and fit it into the socket groove so that the ring's thicker edge faces the inside of the pipe. The ridges on the ring should now be facing backwards, towards the inside of the pipe. Check that the ring is tightly installed in the groove. 4. The ends are now ready to be coupled. Push the spigot end into the socket up to the joint mark. Uponor System PVC 215

8 Cutting and bevelling PVC pressure pipes Bevel to approx. 15 degrees Saw at 90 degrees to the pipe, using a fine-tooth saw. Use of a saw guide is recommended. PVC pipe must be handled carefully in low temperatures (below +5 C). approx. 15 degree angle with a file. The bevelling depth should be around half the pipe wall thickness. Bevel the pipe ends carefully to facilitate coupling. Bevelling can also be done using a pipe beveller. After cutting the pipe and cleaning off the cut edges, the cut ends are ready to be bevelled. Bevel the pipe end to an 216 Uponor System PVC

9 Auxiliary tools and equipment used for Uponor PVC System coupling Push the spigot end of the pipe into the socket up to the joint mark. This must be done manually. If needed, use an iron bar or equivalent to prise the pipes together, levering against a wood block to protect the pipe end. If the trench bottom does not give enough leverage for the bar, use slings and a ratchet winch or the excavator bucket. N.B.! To avoid damaging the pipe, always place a block of wood between the excavator bucket and the pipe end. Uponor System PVC 217

10 Direction changes Direction changes should always be carried out using fittings. Gradual direction changes can, however, be made with long pipes by bending the pipe lengths between the joints. In doing so, it is important to protect the joint sockets from additional loading. The sockets must therefore be held in place by concrete Angular deflection table encasement, extremely thorough compaction, or some other embedment hardening method. The bending radius must be at least 300-fold compared to the pipe's outside diameter (see Figure 6.3.4). We do not recommend bending pipes that are 225 mm or larger in diameter. Per six metre length of pipe. Size Outside diameter Angular deflection Displacement Radius α a r mm degrees cm m , , , , , ,5 Table Angular deflection of PVC pipes 218 Uponor System PVC