法兰止回阀主要依靠介质本身流动而自动开、闭阀瓣，是用来防止介质倒流的阀门，该阀采用法兰连接， 广泛应用于电站，石油，化工，制药，食品等行业。
Features
• Flange Mounting PN16 Only
• BS5153 (BS EN 558-1 Series 10)
Main Materials
| N. | Part Name | Materials |
| 1 | Body | Cast Iron GG25 |
| 2 | Seat Ring | Cast Bronze |
| 3 | Disc Ring | Cast Bronze |
| 4 | Disc Ring | Cast Iron |
| 5 | Hanger | Cast Iron |
| 6 | Washer | Steel |
| 7 | Nut | Steel |
| 8 | Split Pin | Stainless Steel |
| 9 | Disc Screw | Steel |
| 10 | Side Pin | Brass |
| 11 | Gasket | Soft Steel Cardboard |
| 12 | Hanger Pin | Stainless Steel |
| 13 | Bonnet | Cast Steel |
| 14 | Gasket | Graphite |
| 15 | Bolt | Steel |
| 16 | Nut | Steel |
| 17 | Identication Plate | Aluminum |
| 18 | Pin | Stainless Steel |
Dimensions
| DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| L | 203 | 216 | 241 | 292 | 330 | 356 | 496 | 622 | 699 |
| D | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 405 | 460 |
| D1 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 355 | 410 |
| D2 | 99 | 118 | 132 | 156 | 184 | 211 | 266 | 319 | 370 |
| B | 20 | 20 | 22 | 24 | 26 | 26 | 30 | 32 | 32 |
| N-d | 4-19 | 4-19 | 8-19 | 8-19 | 8-19 | 8-23 | 12-23 | 12-28 | 12-28 |
| f | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 |
| H | 112 | 132 | 141 | 162 | 192 | 211 | 270 | 316 | 357 |
| Kgs | 11.6 | 17.5 | 21.4 | 37 | 56.2 | 72.4 | 123 | 201 | 291 |
