55 Note : The shape and appearance of the valve differ a little with nominal size compared to the drawing. DIMENSIONS TABLE JIS Unit:mm Nominal Size d D1 Flanged End JIS 5K JIS 10K L t1 t2 mm inch D C n h D C n h PVC,C-PVC 15 1/2 15 48 80 60 4 12 95 70 4 15 131 12 14 20 3/4 20 60 85 65 4 12 100 75 4 15 156 14 15 25 1 25 70 95 75 4 12 125 90 4 19 169 14 15 40 11/2 40 96 120 95 4 15 140 105 4 19 214 16 16 50 2 51 106 130 105 4 15 155 120 4 19 244 16 20 80 3 78 152 180 145 4 19 185 150 8 19 310 18 22 100 4 100 210 200 165 8 19 210 175 8 19 397 18 22 Nominal Size Socket End Threaded End PVC,C-PVC PP JIS B 0203 L mm inch d1 . 1/T L d1 d2 . L d1 . U-PVC,C-PVC PP,PVDF 15 1/2 22.11 20 1/34 89 21.2 20.2 22 93 Rc 1/2 15 80 78 20 3/4 26.13 24 1/34 106 26.2 25.2 23 104 Rc 3/4 17 95 92 25 1 32.16 27 1/34 117 33.0 32.0 25 113 Rc １ 20 105 102 40 11/2 48.21 37 1/37 162 47.0 46.0 28 144 Rc11/2 25 141 137 50 2 60.25 42 1/37 189 59.0 58.0 28 162 Rc ２ 28 164 160 80 3 89.60 64 1/49 277 88.0 86.0 35 219 Rc ３ 35 222 216 100 4 114.70 84 1/56 376 113.0 111.0 45 298 Rc ４ 45 308 301 DIN Unit:mm Nominal Size d D1 Socket End Threaded End Spigot End PVC, C-PVC PP,PVDF DIN 2999 DIN 3442 DIN 8063 L DIN 16962 L d1 . L d3 t1 . L mm inch d1 . d1 d2 . U-PVC,C-PVC PP,PVDF PP PVDF 15 1/2 15 48 20 16 81 19.50 19.30 14 78 Rp 1/2 15 80 78 20 2.5 1.9 19.0 100 20 3/4 20 60 25 19 96 24.50 24.30 16 90 Rp 3/4 17 95 92 25 2.7 1.9 19.0 110 25 1 25 70 32 22 107 31.50 31.30 18 99 Rp １ 20 105 102 32 3.0 2.4 19.0 116 40 11/2 40 96 50 31 150 49.45 49.20 23 135 Rp11/2 25 141 137 50 4.6 2.9 19.0 142 50 2 51 106 63 38 181 62.50 62.10 27 160 Rp ２ 28 164 160 63 5.8 3.0 19.0 157 80 3 78 152 90 51 248 89.20 88.85 35 217 Rp ３ 35 222 216 90 8.2 4.3 38.0 256 100 4 100 210 110 61 330 109.05 108.65 41 291 Rp ４ 45 308 301 110 10.0 5.3 44.5 333 ANSI Unit:inch Nominal Size d D1 Flanged End Socket End Threaded End ANSI Class 150 L t1 t2 PVC, C-PVC PVDF, PP ANSI/ASME B 1.20.1 L ASTM SCH40 L inch mm D C n h PVC d1 d2 . d1 d2 . L d1 . PVC PP,PVDF 1/2 15 0.59 1.89 3.50 2.38 4 0.63 5.16 0.47 0.55 0.848 0.836 0.688 3.35 0.825 − 0.874 3.82 1/2-14 NPT 0.59 3.15 3.07 3/4 20 0.79 2.36 3.86 2.75 4 0.63 6.14 0.55 0.59 1.058 1.046 0.719 3.74 1.030 − 1.000 4.41 3/4-14 NPT 0.67 3.74 3.62 1 25 0.98 2.76 4.25 3.12 4 0.63 6.65 0.55 0.59 1.325 1.310 0.875 4.33 1.300 − 1.126 4.88 1-111/2 NPT 0.79 4.13 4.02 11/2 40 1.57 3.78 5.00 3.88 4 0.63 8.43 0.63 0.63 1.912 1.894 1.094 5.71 1.890 − 1.374 5.79 11/2-111/2 NPT 0.98 5.55 5.39 2 50 2.01 4.17 5.98 4.75 4 0.75 9.61 0.63 0.79 2.387 2.369 1.156 6.50 2.360 − 1.500 6.89 2-111/2 NPT 1.10 6.46 6.30 3 80 3.07 5.98 7.52 6.00 4 0.75 12.20 0.71 0.87 3.516 3.492 1.875 9.57 3.480 − 1.874 9.57 3-8 NPT 1.38 8.74 8.50 4 100 3.94 8.27 9.02 7.50 8 0.75 15.63 0.71 0.87 4.518 4.491 2.000 12.20 4.480 − 2.252 12.68 4-8 NPT 1.77 12.13 11.85 The measurement of the m i n i m u m p r e s s u r e f o r opening & closing the valve with air or gas on Asahi Ball Check Valve. UNIT:MPa{kgf/cm2} Test Items Vertical Piping Horizontal Piping Nominal Size Min. Air Pressure to Min. Air Pressure to Min. Air Pressure to Min. Air Pressure to mm inch open the valve shut the Disc perfectly open the valve shut the Disc perfectly 15 1/2 0.005{0.05} 0.02 {0.2} 0.001{0.01} 0.02 {0.2} 20 3/4 0.005{0.05} 0.03 {0.3} 0.001{0.01} 0.03 {0.3} 25 1 0.005{0.05} 0.03 {0.3} 0.001{0.01} 0.03 {0.3} 40 11/2 0.01 {0.1 } 0.03 {0.3} 0.002{0.02} 0.03 {0.3} 50 2 0.01 {0.1 } 0.03 {0.3} 0.002{0.02} 0.03 {0.3} 80 3 0.01 {0.1 } 0.02 {0.2} 0.002{0.02} 0.02 {0.2} 100 4 0.01 {0.1 } 0.02 {0.2} 0.002{0.02} 0.02 {0.2} * By replacing some of its parts, the ball check valve can be switched to the ball foot valve, with a slight change in dimensions. WORKING PRESSURE VS. TEMPERATURE ｛10.2｝ 1.0 0.5 0.0 ｛5.1｝ ｛10.2｝ 1.0 0.5 0.0 ｛5.1｝ 60 80 100 120 [150] [70] -40 -20 0 20 40 （-40） （-5） （30） （90） （105） （140） （175） （210） （250） Temperature℃（゜F） 60 80 100 120 [150] [70] -40 -20 0 20 40 （-40） （-5） （30） （90） （105） （140） （175） （210） （250） Temperature℃（゜F） PVC PVC PVC PVC PVDF PVDF PVDF PVDF PVDF PP PP PP PP C-PVC C-PVC C-PVC Max Working Pressure MPa{kgf/cm2}[PSI] Max Working Pressure MPa{kgf/cm2}[PSI] 15mm(1/2inch) - 50mm(2inch) 80mm(3inch), 100mm(4inch) BALL CHECK VALVE DIAPHRAGM VALVE BUTTERFLY BALL VALVE VALVE SWING CHECK VALVE BALL CHECK, BALL FOOT VALVE AUTOMATIC WATER GATE VALVE GAUGE VALVE STOP VALVE FEEDING VALVE ROTARY ANGLE VALVE CONSTANT FLOW ALFALFA VALVE VALVE Y-SEDIMENT NEEDLE VALVE STRAINER AIR RELEASE VALVE WAFER CHECK VALVE