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056 a. Genera Pipe (VP) JIS K 6741-1995 Temperature Condition: 20‹C 3. Short-Term Burst Pressure Test 4. Relationship between Maximum Working Pressure and Temperature 13.1 13.2 10.9 10.1 8.3 7.6 6.9 5.4 6.2 5.8 4.9 5.4 4.7 4.7 4.7 13 16 20 25 30 40 50 65 75 100 125 150 200 250 300 Size (mm) Short-Term Burst Pressure MPa {kgf/cm2} Maximum Working Pressure* MPa {kgf/cm2} b. Genera Pipe (VU) JIS K-6741-1995 Temperature Condition: 20‹C 3.7 2.9 2.8 2.9 2.6 2.8 3.0 2.9 2.8 2.8 2.7 2.7 2.7 2.7 o37.4p o29.7p o28.6p o30.0p o26.8p o28.9p o30.6p o29.8p o28.9p o28.6p o28.0p o27.7p o27.7p o27.7p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 0.6o6.1p 40 50 65 75 100 125 150 200 250 300 350 400 450 500 Size (mm) Short-Term Burst Pressure MPa {kgf/cm2} Maximum Working Pressure* MPa {kgf/cm2} Notes: 1. Burst pressure value is calculated with the tensile strength specified in the quality section of JIS K 6741 (minimum value 47 N/mm2o480kgf/ cm2pat 20‹C during test). Therefore, this value is the minimum value and the actual value would be much higher. 2. Short-term burst pressure will be derived from the following Naday formula. P : Working pressure (MPa)okgf/cm2p ƒÐ: Design stress (N/mm2)okgf/cm2p D: Outer diameter (mm) t : Thickness (mm) 3. For general pressure-transporting pipes, pipes with different sizes are often used in a single conduit. Therefore, the maximum working pressure would be 1.0 MPa {10.2kgf/cm2} for VP, 0.6MPa {6.1kgf/cm2} for VU and 0.8 MPa {8.2kgf/cm2} for VM. P  2~ƒÐ iD/t.1j o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p o 10.2p 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Notes: Maximum Working Pressure is the pressure including the water hammer pressure. Do not use them exceeding the maximum working pressure. Notes: Maximum Working Pressure is the pressure including the water hammer pressure. Do not use them exceeding the maximum working pressure. c. Genera Pipe (VM) JIS K6741 Size (mm) 350 Temperature Condition: 20‹C Short-Term Burst Pressure MPa {kgf/cm2} 3.8 { 38.6} 0.8 { 8.2} Maximum Working Pressure MPa {kgf/cm2} Technical Document Temperature Size (mm) 0 to 20‹C Up to 30‹C Up to 40‹C Up to 50‹C Up to 60‹C 13 to 300 1.0o 10.2p 0.9o 9.2p 0.7o 7.1p 0.3o 3.1p 0.1o 1.0p Temperature Size (mm) 0 to 20‹C Up to 30‹C Up to 40‹C Up to 50‹C Up to 60‹C 40 to 500 0.6o 6.1p 0.5o 5.1p 0.4o 4.1p 0.2o 2.0p 0.06o 0.6p Unplasticized Polyvinyl Chloride Pipe VP Unit: MPao kgf/cm2p VU Unit: MPao kgf/cm2p o 133.6p o 134.2p o 111.2p o 102.9p o 85.2p o 77.8p o 70.4p o 54.7p o 63.2p o 58.9p o 50.5p o 54.7p o 48.0p o 47.9p o 47.8p