Duplex Dual Plate Lug Type Check Valve
Body: Duplex Stainless Steel, Alloy Steel, Super Duplex, Inconel, Incoloy, Titanium
Disc: Duplex Stainless Steel, Alloy Steel, Super Duplex, Inconel, Incoloy, Titanium
Seat: Metal Seated, BUNA, EPDM, VITON
Nominal Size: 2″ to 24″
Nominal Pressure: PN16, PN10, Class150 to Class600
End Connection: Lugged
Design and Manufacture Standard: API 594
End Dimension: ASME B16.5, ANSI B16.10, JIS B2220
Face to Face Dimension: EN558-1, API 594, ISO 5752, ANSI B16.10
 Dimensions                                                                 Unit: mm
| NPS | in | 2 | 21/2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | |
| 150Lb | L | mm | 60 | 67 | 73 | 73 | 86 | 98 | 127 | 146 | 181 | 184 | 191 | 203 | 219 | 222 |
| D | mm | 103 | 122 | 135 | 173 | 196 | 222 | 279 | 339 | 409 | 450 | 514 | 549 | 606 | 717 | |
| D1 | mm | 120.5 | 139.5 | 152.5 | 190.5 | 216 | 241.5 | 298.5 | 362 | 432 | 476 | 540 | 578 | 635 | 749.5 | |
| D2 | mm | 92 | 105 | 127 | 157 | 186 | 216 | 270 | 324 | 381 | 413 | 470 | 533 | 584 | 692 | |
| n-Фd | mm | 4-19 | 4-19 | 4-19 | 8-19 | 8-22 | 8-22 | 8-22 | 12-25 | 12-25 | 12-29 | 16-29 | 16-32 | 20-32 | 20-35 | |
| 300Lb | L | mm | 60 | 67 | 73 | 73 | 86 | 98 | 127 | 146 | 181 | 222 | 232 | |||
| D | mm | 110 | 128 | 148 | 180 | 215 | 250 | 307 | 361 | 422 | 485 | 539 | ||||
| D1 | mm | 127 | 149 | 168.5 | 200 | 235 | 270 | 330 | 387.5 | 451 | 514.5 | 571.5 | ||||
| D2 | mm | 92 | 105 | 127 | 157 | 186 | 216 | 270 | 324 | 381 | 413 | 470 | ||||
| n-Фd | mm | 8-19 | 8-22 | 8-22 | 8-22 | 8-22 | 12-22 | 12-25 | 16-29 | 16-32 | 20-32 | 20-35 | ||||
| 600Lb | L | mm | 60 | 67 | 73 | 79 | 105 | 137 | 165 | 213 | 229 | 273 | 305 | |||
| D | mm | 110 | 129 | 148 | 192 | 240 | 265 | 319 | 399 | 456 | 489 | 562 | ||||
| D1 | mm | 127 | 149 | 168.5 | 216 | 267 | 292 | 349 | 432 | 489 | 527 | 603 | ||||
| D2 | mm | 92 | 105 | 127 | 157 | 186 | 216 | 270 | 324 | 381 | 413 | 470 | ||||
| n-Фd | mm | 8-19 | 8-22 | 8-22 | 8-25 | 8-29 | 12-29 | 12-32 | 16-35 | 20-35 | 20-38 | 20-41 | ||||
