日标铸钢直通截止止回阀 JIS F7311C 5K
Standard Materials
| body | sc450 |
| bonnet | sc450 |
| seat | bc6/sus420 |
| disc | sc450 |
| stem | c3771bd or be/sus420 |
| gland | bc6 |
| gasket | non-asbestos |
| DN | d | L | D | C | NO. | h | t | H | D2 |
| 50 | 50 | 210 | 130 | 105 | 4 | 15 | 14 | 270 | 160 |
| 65 | 65 | 250 | 155 | 130 | 4 | 15 | 14 | 300 | 180 |
| 80 | 80 | 280 | 180 | 145 | 4 | 19 | 16 | 310 | 180 |
| 100 | 100 | 340 | 200 | 165 | 8 | 19 | 16 | 360 | 224 |
| 125 | 125 | 410 | 235 | 200 | 8 | 19 | 16 | 390 | 250 |
| 150 | 150 | 480 | 265 | 230 | 8 | 19 | 18 | 445 | 280 |
| 200 | 200 | 570 | 320 | 280 | 8 | 23 | 20 | 530 | 315 |
| 250 | 250 | 740 | 385 | 345 | 12 | 23 | 22 | 650 | 355 |
| 300 | 300 | 840 | 430 | 390 | 12 | 23 | 24 | 740 | 400 |