鍛鋼截止閥是一種常用的截斷閥，主要用來接通或截斷管路中的介質，一般不用于調節流量。截止閥適用的壓力、溫度范圍很大，本閥適用于小口徑的管道，密封面不易磨損、擦傷，密封性能好，啟閉時閥瓣行程小，啟閉時間較短，閥門高度較小。
【執行標準】
設計制造：GB12224 GB/T12228 BG/T12235
結構長度：JB/T96-95
法蘭尺寸：JB/T82.1~82.4-94
檢驗和試驗：GB/T13927
【性能參數】
| 試驗項目（PN） | 1.6 | 2.4 | 4.0 | 6.4 | 10.0 | 16.0 |
| 強度試驗 | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 24.0 |
| 密封試驗 | 1.76 | 2.75 | 4.4 | 7.04 | 11.0 | 17.6 |
| 氣密封試驗 | 0.6 | |||||
| 適用溫度 | ≤425℃ | |||||
| 適用介質 | 水、油品、蒸氣 | |||||
主要外形和連接尺寸
| 公稱通徑 | 主要外形尺寸和連接尺寸 | |||||||
| L | d | S | L1 | T | L2 | H | D0 | |
| J41H-16 CJ41H-25 J41H-40 J11H-16 CJ11H-25 J11H-40 J61H-16C J61H-25 J61H-40 | ||||||||
| 15 | 90 | 13 | 22.5 | 10 | 1/2 | 15 | 159 | 98 |
| 20 | 100 | 18 | 28.5 | 11 | 3/4 | 17 | 190 | 112 |
| 25 | 120 | 23 | 34.5 | 12 | 1 | 19 | 208 | 126 |
| 32 | 140 | 29 | 43 | 14 | 1? | 21 | 216 | 166 |
| 40 | 170 | 36 | 49 | 15 | 1? | 21 | 247 | 188 |
| 50 | 200 | 46 | 61 | 16 | 2 | 25 | 290 | 220 |
| J41H-64 J11H-64 J61H-64 | ||||||||
| 15 | 90 | 13 | 22.5 | 10 | 1/2 | 15 | 159 | 98 |
| 20 | 100 | 18 | 28.5 | 11 | 3/4 | 17 | 190 | 112 |
| 25 | 120 | 23 | 34.5 | 12 | 1 | 19 | 208 | 126 |
| 32 | 140 | 29 | 43 | 14 | 1? | 21 | 216 | 166 |
| 40 | 170 | 36 | 49 | 15 | 1? | 21 | 258 | 188 |
| 50 | 210 | 46 | 61 | 16 | 2 | 25 | 405 | 220 |
| 公稱通徑 | 主要外形尺寸和連接尺寸 | |||||||
| L | d | S | L1 | T | L2 | H | D0 | |
| J41H-100 J11H-100 J61H-100 | ||||||||
| 15 | 90 | 13 | 22.5 | 10 | 1/2 | 15 | 159 | 98 |
| 20 | 100 | 18 | 28.5 | 11 | 3/4 | 17 | 190 | 112 |
| 25 | 120 | 23 | 34.5 | 12 | 1 | 19 | 208 | 126 |
| 32 | 140 | 29 | 43 | 14 | 1? | 21 | 216 | 166 |
| 40 | 170 | 26 | 49 | 15 | 1? | 21 | 258 | 188 |
| 50 | 210 | 46 | 61 | 16 | 2 | 25 | 405 | 220 |
| J41H-160 J11H-160 J61H-160 | ||||||||
| 15 | 90 | 13 | 22.5 | 10 | 1/2 | 15 | 159 | 98 |
| 20 | 100 | 18 | 28.5 | 11 | 3/4 | 17 | 190 | 112 |
| 25 | 120 | 23 | 34.5 | 12 | 1 | 19 | 208 | 126 |
| 32 | 140 | 29 | 43 | 14 | 1? | 21 | 216 | 188 |
| 40 | 170 | 36 | 49 | 15 | 1? | 21 | 258 | 220 |
| 50 | 210 | 46 | 61 | 16 | 2 | 25 | 405 | 220 |
