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    UPVC PIPES » Pipes For Water Supply
     

    UPVC PIPES & FABRICATED FITTINGS

    FOR COLD WATER SUPPLY 

    Shows the range of UPVC pipes of two different pressure ratings 10 Bar and 16 bar for water supply, irrigation or for any other under-pressure system. The pressure ratings indicated are the continuous working pressures at 20° C temperature.

    Table: 1.3


     Dimensions Based on SAS 14, DIN 8062
    Nominal Outside Diameter (mm)
     
    16
     
    20
     
    25
     
    30
     
    40
     
    50
     
    63
     
    75
     
    90
     
    110
     
    140
     
    160
     
    225
     
    280
     
    315
    Class 4(10 Bar)Nominal Wall Thickness (mm)
     
    -
     
    -
     
    1.5
     
    1.8
     
    1.9
     
    2.4
     
    3.0
     
    3.6
     
    4.3
     
    5.3
     
    6.7
     
    7.7
     
    10.8
     
    13.4
     
    15.0
    Class 5(16 Bar )Nominal Wall Thickness(mm)
     
    1.2
     
    1.5
     
    1.9
     
    2.4
     
    3.0
     
    3.7
     
    4.7
     
    5.6
     
    6.7
     
    8.2
     
    10.4
     
    11.9
     
    16.7
     
    20.8
     
    23.8

     Table: 1.4


    Temperature Pressure Relationship
    Temperature
    Percentage of Working Pressure
    ° C
    ° F
     
    20
    68
    100
    30
    86
    90 
    35
    95
    80
    40
    104
    70
    45
    113
    45
    50
    122
    45
    55
    131
    30
    60
    140
    15

    Since UPVC is a thermoplastic material, pressure ratings must be reduced as higher temperatures are encountered. Table 1.4 Shows the percentage of the pressure rating recommended for various working temperatures about 20° C with a fluctuation not exceeding  5° C. UPVC pipes should not be used for pressure duties if the operational temperature exceeds 60° C. As with all plastic pipe lines. Special precautions must be taken where there is a possibility of water hammer or surge pressure. incorporating surge tanks or pressure release valves in the system will obviate this problem.
     
     
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