As a premier Custom CPVC Flange Supplier for Projects, we provide high-performance piping solutions engineered for the most demanding thermal and chemical environments. Our CPVC Loose Flange features a specialized Van Stone design, combining a heavy-duty stub end with a rotating backing ring to ensure maximum structural integrity at 1.6 MPa.

| ANSI SCH80 CPVC van stone flange dimensions chart (Unit: mm/inch) | |||||||||||
| SIZE | D (mm/inch) | D1 (mm/inch) | C (mm/inch) | d (mm/inch) | d1 (mm/inch) | d2 (mm/inch) | H (mm/inch) | T (mm/inch) | I (mm/inch) | n-fe | |
| DN15 | 1/2"CPVC van stone flange | 95.0 / 3.74 | 30.6 / 1.20 | 60.5 / 2.38 | 15.0 / 0.59 | 21.54 / 0.85 | 21.23 / 0.84 | 26.0 / 1.02 | 14 / 0.55 | 22.5 / 0.89 | 4-15 |
| DN20 | 3/4"CPVC van stone flange | 105.0 / 4.13 | 36.0 / 1.42 | 69.9 / 2.75 | 20.0 / 0.79 | 26.87 / 1.06 | 26.57 / 1.05 | 29.5 / 1.16 | 15 / 0.59 | 25.0 / 0.98 | 4-15 |
| DN25 | 1"CPVC van stone flange | 125.0 / 4.92 | 43.8 / 1.72 | 79.5 / 3.13 | 25.0 / 0.98 | 33.65 / 1.32 | 33.27 / 1.31 | 32.2 / 1.27 | 16 / 0.63 | 28.7 / 1.13 | 4-19 |
| DN32 | 1-1/4"CPVC van stone flange | 140.0 / 5.51 | 52.6 / 2.07 | 89.0 / 3.50 | 32.0 / 1.26 | 42.42 / 1.67 | 42.04 / 1.65 | 38.5 / 1.52 | 16 / 0.63 | 31.7 / 1.25 | 4-19 |
| DN40 | 1-1/2"CPVC van stone flange | 150.0 / 5.91 | 60.7 / 2.39 | 98.5 / 3.88 | 40.0 / 1.57 | 48.56 / 1.91 | 48.11 / 1.90 | 40.5 / 1.59 | 18 / 0.71 | 35.0 / 1.38 | 4-19 |
| DN50 | 2"CPVC van stone flange | 165.0 / 6.50 | 74.8 / 2.94 | 120.7 / 4.75 | 51.0 / 2.01 | 60.63 / 2.39 | 60.17 / 2.37 | 45.0 / 1.77 | 20 / 0.79 | 38.0 / 1.50 | 4-19 |
| DN65 | 2-1/2"CPVC van stone flange | 185.0 / 7.28 | 89.6 / 3.53 | 139.7 / 5.50 | 63.0 / 2.48 | 73.38 / 2.89 | 72.85 / 2.87 | 51.0 / 2.01 | 24 / 0.94 | 44.0 / 1.73 | 4-19 |
| DN80 | 3"CPVC van stone flange | 200.0 / 7.87 | 106.5 / 4.19 | 152.4 / 6.00 | 81.0 / 3.19 | 89.31 / 3.52 | 88.70 / 3.50 | 55.0 / 2.17 | 26 / 1.02 | 47.5 / 1.87 | 8-19 |
| DN100 | 4"CPVC van stone flange | 228.0 / 9.00 | 133.0 / 5.24 | 190.5 / 7.50 | 102.0 / 4.02 | 114.76 / 4.52 | 114.10 / 4.50 | 64.0 / 2.52 | 28 / 1.10 | 57.5 / 2.26 | 8-19 |
| DN125 | 5"CPVC van stone flange | 254.0 / 10.00 | 160.1 / 6.30 | 215.9 / 8.50 | 125.0 / 4.92 | 141.81 / 5.58 | 141.00 / 5.55 | 81.5 / 3.21 | 28 / 1.10 | 66.0 / 2.60 | 8-22 |
| DN150 | 6"CPVC van stone flange | 284.0 / 11.18 | 187.1 / 7.37 | 241.3 / 9.50 | 156.0 / 6.14 | 168.83 / 6.65 | 168.00 / 6.61 | 86.7 / 3.41 | 32 / 1.26 | 76.5 / 3.01 | 8-22 |
| DN200 | 8"CPVC van stone flange | 343.0 / 13.50 | 247.1 / 9.73 | 298.5 / 11.75 | 204.0 / 8.03 | 219.84 / 8.65 | 218.70 / 8.61 | 130.0 / 5.12 | 35 / 1.38 | 117.3 / 4.62 | 8-22 |
| DN250 | 10"CPVC van stone flange | 406.0 / 16.00 | 305.0 / 12.01 | 362.0 / 14.25 | 256.0 / 10.08 | 273.81 / 10.78 | 272.67 / 10.74 | 159.0 / 6.26 | 42 / 1.65 | 145.0 / 5.71 | 12-25 |
| DN300 | 12"CPVC van stone flange | 483.0 / 19.02 | 346.0 / 13.62 | 432.0 / 17.01 | 307.0 / 12.09 | 324.61 / 12.78 | 323.47 / 12.74 | 190.0 / 7.48 | 52 / 2.05 | 171.0 / 6.73 | 12-25 |
| DIN PN16 CPVC van stone flange dimensions chart (Unit: mm) | ||||||||||||
| SIZE | D | D1 | C1 | C2 | d | d1 | d2 | H | T | I | n-fe | |
| DN15 | 20mmCPVC van stone flange | 95.0 | 30.6 | 60.0 | 70.0 | 15.0 | 20.3 | 20.0 | 26.0 | 14 | 22.0 | 4-15 |
| DN20 | 25mmCPVC van stone flange | 105.0 | 36.0 | 70.0 | 75.0 | 20.0 | 25.3 | 25.0 | 29.5 | 15 | 23.4 | 4-15 |
| DN25 | 32mmCPVC van stone flange | 125.0 | 43.8 | 80.0 | 90.0 | 25.0 | 32.3 | 32.0 | 32.2 | 16 | 28.7 | 4-15 |
| DN32 | 40mmCPVC van stone flange | 140.0 | 52.6 | 90.0 | 100.0 | 32.0 | 40.4 | 40.0 | 38.5 | 16 | 32.0 | 4-19 |
| DN40 | 50mmCPVC van stone flange | 150.0 | 60.7 | 99.0 | 110.0 | 43.0 | 50.4 | 50.0 | 40.5 | 18 | 35.0 | 4-19 |
| DN50 | 63mmCPVC van stone flange | 165.0 | 74.8 | 120.0 | 125.0 | 55.0 | 63.4 | 63.0 | 45.0 | 20 | 38.2 | 4-19 |
| DN65 | 75mmCPVC van stone flange | 185.0 | 89.6 | 140.0 | 145.0 | 65.0 | 75.5 | 75.0 | 51.0 | 24 | 45.0 | 4-19 |
| DN80 | 90mmCPVC van stone flange | 200.0 | 106.5 | 150.0 | 160.0 | 80.0 | 90.5 | 90.0 | 55.0 | 26 | 48.0 | 8-19 |
| DN100 | 110mmCPVC van stone flange | 228.0 | 133.0 | 175.0 | 191.0 | 100.0 | 110.5 | 110.1 | 64.0 | 29 | 57.5 | 8-19 |
| DN125 | 140mmCPVC van stone flange | 254.0 | 160.1 | 210.0 | 216.0 | 125.0 | 140.6 | 140.1 | 81.5 | 28 | 66.8 | 8-22 |
| DN150 | 160mmCPVC van stone flange | 284.0 | 187.1 | 240.0 | 242.0 | 154.0 | 160.6 | 160.1 | 86.7 | 32 | 76.0 | 8-23 |
| DN200 | 225mmCPVC van stone flange | 343.0 | 247.1 | 295.0 | 299.0 | 200.0 | 225.8 | 225.1 | 130.0 | 35 | 117.0 | 8-23 |
| DN250 | 250mmCPVC van stone flange | 406.0 | 305.0 | 355.0 | 362.0 | 240.0 | 250.8 | 250.1 | 159.0 | 42 | 131.0 | 12-25 |
| DN300 | 280mmCPVC van stone flange | 406.0 | 305.0 | 355.0 | 362.0 | 250.0 | 281.5 | 280.1 | 159.0 | 42 | 144.5 | 12-25 |
| DN350 | 315mmCPVC van stone flange | 483.0 | 344.6 | 410.0 | 432.0 | 307.0 | 317.0 | 315.1 | 190.0 | 52 | 172.0 | 12-25 |



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