NOMINAL SIZE (mm) (Inch) 15 to 50 ½ to 2
NOMINAL SIZE (mm) (Inch) 15 to 50 ½ to 2
LENGTH Effective length 3 & 6 mtr. / as per customer requirement.
DIMENSIONAL CHART FOR TAPERED SOCKET PVC PIPE FITTINGS OF SCH – 80 AS PER ASTM D 2467 SIZE SOCKET ENTRANCE DIAMETER SOCKET BOTTOM DIAMETER SOCKET LENGTH MIN INSIDE DIA MIN MINIMUM WALL THICKNESS AVERAGE ID MAX.OUT OF ROUNDNESS AVERAGE ID MAX.OUT OF ROUNDNESS MIN MAX MIN MAX MIN ON SOCKET ON BODY ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) 1/2″ 21.44 21.64 0.41 21.13 21.33 0.41 22.22 12.75 3.73 4.70 3/4″ 26.77 26.97 0.51 26.47 26.67 0.51 25.40 17.73 3.91 4.95 1″ 33.52 33.78 0.51 33.14 33.40 0.51 28.58 23.14 4.55 5.72 1¼” 42.29 42.55 0.61 41.91 42.17 0.61 31.75 31.17 4.85 6.07 1½” 48.41 48.71 0.61 47.96 48.26 0.61 34.93 36.73 5.08 6.35 2″ 60.48 60.78 0.61 60.02 60.32 0.61 38.10 47.78 5.54 6.99 DIMENSIONAL CHART FOR PVC PIPES OF SCH – 40 & SCH – 80 PER ASTM D 1785 PIPE SIZE OD SOCKET SCH – 40 SCH – 80 WALL THICKNESS WALL THICKNESS MIN MAX MIN MAX MIN MAX ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) ( MM ) 1/2″ 21.24 21.44 2.77 3.28 3.73 4.24 3/4″ 26.57 26.77 2.87 3.38 3.91 4.42 1″ 33.27 33.53 3.38 3.89 4.55 5.08 1¼” 42.03 42.29 3.56 4.07 4.85 5.43 1½” 48.11 48.41 3.68 4.19 5.08 5.69 2″ 60.17 60.47 3.91 4.42 5.54 6.20
DENSITY 1430-1460 KG/M3 MINIMUM ULTIMATE TENSILE STRENGTH 45 MPA COMPRESSIVE STRENGTH 66 MPA SHEAR STRENGTH 39 MPA TENSILE (YOUNGS MODULUS) 2750 MPA (AT HIGH LEADS) HARDNESS (SHORE) 85 (ASTM D2240) HARDNESS (BRINNELL ) AT 23°C 12 – 15 IMPACT (CHARPY) – 20°C 20 KJ/M² (250 (U)M NOTCH RADIUS ELONGATION AT BREAK 50 – 80% POISSON’S RATION 0.35 – 0.40
MAX CONTINUOUS SERVICE TEMP 60°C SPECIFIC HEAT 1047 J /KG / °C COEFFICIENT OF LINEAR EXPANSION 7 X10¯5 / °C THERMAL CONDUCTIVITY 0.13 – 0.15 W /M/ °C FLAME RESISTANCE SELF – EXTINGUISHING UPVC DOES NOT SUPPORT COMBUSTION WHEN THE SOURCE OF IGNITION IS REMOVED. AT THE FABRICATION TEMPERATURE, IT CAN BE SHAPED BY DEFORMATION PRIMARY SOFTENING POINT NOT LESS THAN 80°C (AS 1462)
ELECTRICAL PROPERTIES 12 -38 KV /MM DIELECTRIC STRENGTH 3.0 – 3.2 @ 106 HZ DIELECTRIC CONSTANT 0.02 @ 106 HZ RESISTANCE TO POWER FACTOR 1013 -1014 OHM SURFACE RESISTIVITY 2000 VOLTS / MM
uPVC is a non – conductor and cannot be used as earthing for electrical equipment
HORIZONTAL & VERTICAL SUPPORT SPACING
Adequate supports for any piping system is a matter of great importance, in practice, support spacing are a function of pipe size operating temperature, the location of heavy valves of fitting and the mechanical properties of the material, To ensure the satisfactory operation of a UTKARSH. Aquarius uPVC piping system, the location and type of hangers should be carefully considered. Hangers should not compress, distort, cut or abrade the piping.
All piping should be supported and to prevent sagging or grade reversal. Pipe alignment and to prevent sagging or branch ends and all change of direction. Support trap arms as close as possible to the trap. In keeping with good plumbing practices support and brace all closet bends and fasten closet flanges.
- Concentrated loads should be supported directly so as eliminate high stress concentrations. Should this be impractical then the pipe must be supported immediately adjacent to the load.
- In system where large fluctuations in temperature occur, allowance must be made for expansion and contraction of the piping system. Since changes in direction in the system are usually sufficient to allow for expansion and contraction hangers must ne placed so as not to restrict this movement.
- Since plastic pipe expands or contract approximately five times greater than those of steel, hangers should not restrict this movement.
- Hangers should provide as much bearing surface as possible. To prevent damage to the pipe, file smooth any sharp edges of burrs on the hangers or supports.
- Supports spacing for horizontal piping systems is determined by the maximum operating temperature the system will encounter. The piping should be supported on uniform centers with supports that do not restrict the axial movement.
- For vertical lines, it is recommended that an engineer should design the vertical support engineer should design the vertical load involved.
DESIGN ASPECT OF PVC PIPELINE
Hydraulic Gradient Line
TOTAL HEAD = FRICTIONAL HEAD (h2) + STATIC HEAD (h1) + LOSSES IN VALVE
CHANGE/LENGTH IN METERS
B: SLUICE VALVE
C: PRESSURE RELEASE VALVE
D: NON RETUNE VALVE
E: AIR VALVE (T)
BASIC PARAMETERS REQUIRED
- Discharges Required (Q) (Ips) This is the amount of water required for irrigating the fields & can be obtained by planning the crop pattern % frequency of irrigation.
- Length of the pipeline (L) (meters) This is the total length of the pipe required from the source of water to the discharge point as shown in the “L” section.
- Static Head (h1) (meter) This is the level difference between the lowest & the highest level of the pipeline as shown in the “L” section.
SELECTION OF PIPE DIAMETER
For an optimum design, the b=velocity of the fluid passing through the pipe is taken as 1m/sec. Using the flow available in Utkarsh U-FLO product catalogue, select the pipe size as an intersection of Velocity = 1m/sec & discharges Q in Ips. For this pipe size also check the corresponding frictional losses (h2) from the flow chart. Alternatively the frictional losses can also be calculated by the Hazen Williams formula i.e.
V = 4.567 X10 m³ X C X 0.63D X 0.54S
V – Velocity of the fluid flowing through the pipe
C – Hazen Williams coefficient for PVC = 150
D – Internal Diameter of the pipe
S – Hydraulic Gradient
SELECTION OF PRESSURE CLASS
For selection of pressure class pipeline, total head acting on the pipe at the particular point needs to be worked out as under:
Total Head (H) = h1 +h2+10% of (h1+h2)
ON WORKING OUT THE TOTAL HEAD, PIPE PRESSURE CLASS CAN BE SELECTED AS BELOW
TOTAL HEAD (METERS) PRESSURE CLASS (KG *CM²) 80 – 100 10 60 – 80 8 40 – 60 6 25 – 40 4 00 – 25 2.5
The principle, which is generally used, is that one (Kg *cm²) is equal to 10 meters of water column
- The physical, chemical and mechanical properties of uPVC pipes and fitting demonstrate their superiority in utility and application over conventional materials.
- PVC has a density of approximately 1.43 g/cm3. As such it is less than 1/6 th the weight of cost iron and steel, making it such cheaper to transport and easier to handle during installation.
- The inherent mechanical strength of uPVC pipes making them suitable even in varying conditions, and steel gauged from the fact that the tensile, flexural and compressive strength of PVC is around 450 kg/cm2/45MPa.
- PVC has a resistivity of greater than 1014 Ohm. Cm, and has good insulating properties.
LOW THERMAL CONDUCTIVITY
- PVC has a thermal conductivity of 1.13W/m/°C, which is only a fraction of the thermal conductivity of steel, this enables fluids to be transported through uPVC pipe, maintaining a uniform fluid temperature. The lower thermal conductivity factor also ensures that there is no external ‘swearing’ of the pipe when fluids at a very low temperature are passing through them.
- uPVC pipes offer one of the most hygienic means of fluid transportation. They are resistant to attack by fungi and are not subject to contamination, The inside surface, which is extremely smooth, does not support any growth, encrustation or fuming and no order or taste is transmitted to the fluid being conveyed, This property is pf prime importance for the transportation of potable water to towns and villages.
HYDRAULIC RESISTANCE AND FLOW CHARACTERISTICS
- uPVC pipes due to their smooth inner surface, allow a greater flow of water than an identical size of conventional piping. The Hazen – Willam’s constant of flow for uPVC pipe is around 150, which is higher than that for conventional materials. The head loss of any proposed PVC pipeline can be readily calculated.
- PVC is unaffected by most concentrations of acids, alkalis, organic chemicals, olis and fats. This resistance to corrosion by most chemicals makes uPVC pipes indispensable for contemporary application is various sectors of industry and for sewerage.
- Being a thermoplastic material, PVC is better able to withstand deformation in shape due to earth movements, uPVC pipes, in this respect , are considerably more popular than asbestos cement pipes, which can collapse under stress levels which are well within the limits of uPVC pipes.
GALVANIC & ELECTROLYTIC IMMUNITY
- Unlike metallic pipes which need special surface coating to resist electrolytic action, PVC pipe being a nonconductor of electricity, are totally immune to galvanic and electrolytic attack, Thus, use of uPVC pipes overcomes several problems and makes redundant any further surface treatment of the piping material.
- uPVC pipes have proved time and again that are self –extinguishing and do not support combustion. They are, therefore, ideally suited use in building and other construction.
- U-FLO pipes uPVC pipes and fitting are UV resistant. UV acts a strong catalyst for the oxidation process which breaks down the polymer chains, leading to weakness in the pipes and fitting that causes loss of hydrostatics strength.
DIMENSIONS OF UPVC PIPES
- uPVC pipes are manufacture conforming to the latest ASTM D 1785 & uPVC fitting are manufactured conforming to the latest ASTM D 2467 standard. This applies to our standard range of manufacture.
NOTE : uPVC pipe means unplasticised polyvinyl chloride pipe, also frequently referred to as rigid PVC pipe. The word rigid does not explain its structure, but defines a property, which is self explanatory.
- Hygienic and suitable for carrying drinking water
- Easy to install, transport and handle
- Leak proof joints, quick installation
- Excellent chemical and corrosion resistance
- Optimum flow rates, no clogging
- A large range of fillings
- Low on Maintenance
- Lasting more than 20 years
- UV resistance