日标铸钢直角截止止回阀 JIS F7314 20K
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 |
| 32 | 32 | 100 | 135 | 100 | 4 | 19 | 18 | 270 | 160 |
| 40 | 40 | 110 | 140 | 105 | 4 | 19 | 18 | 290 | 160 |
| 50 | 50 | 125 | 155 | 120 | 8 | 19 | 18 | 305 | 200 |
| 65 | 65 | 135 | 175 | 140 | 8 | 19 | 20 | 345 | 224 |
| 80 | 80 | 150 | 200 | 160 | 8 | 23 | 22 | 385 | 250 |
| 100 | 100 | 170 | 225 | 185 | 8 | 23 | 24 | 440 | 280 |
| 125 | 125 | 200 | 270 | 225 | 8 | 25 | 26 | 500 | 315 |
| 150 | 150 | 225 | 305 | 260 | 12 | 25 | 28 | 550 | 355 |
| 200 | 200 | 280 | 350 | 305 | 12 | 25 | 30 | 630 | 450 |
| 250 | 250 | 310 | 430 | 380 | 12 | 27 | 34 | 725 | 560 |