鍛鋼閘閥有三種閥蓋設計形式.*種是螺栓式閥蓋,按這種設計形式設計的閥門,其閥體與閥蓋用螺栓螺母連接,纏繞式墊片（316夾柔性石墨制造）密封.客戶有特殊要求時也可采用金屬環連接.二種設計形式是焊接式閥蓋,按這種設計形式的閥門,其閥體與閥蓋用螺紋連接,全焊密封.客戶有特殊要求時也可采用透焊連接.三種是自密封閥蓋,按這種設計形式設計的閥門,其閥體與閥蓋用螺紋連接,內壓自密環密封。
鍛鋼閘閥是指關閉件(閘板)沿通路中間線的垂直方向移動的閥門。鍛鋼閘閥在管路中主要作切斷用。鍛鋼閘閥是使用很廣的一種閥門，一般口徑DN≤50的切斷裝置都選用它。鍛鋼閘閥比較常見。
材料表：
| 序號 NO. | 名 稱 | 美標碳鋼 CS to ASTM | 美標合金鋼 AS to ASTM | 美標不銹鋼鋼 SS to ASTM | ||
| Part Name | Type A 105 | Type F22 | Type F304(L) | Type F316(L) | ||
| 1 | 閥體 | Body | A105 | A182 F22 | A182 F304(L) | A182 F316(L) |
| 2 | 閥座 | Seat Ring | A276 420 | A276 304 | A276 F304(L) | A276 F316(L) |
| 3 | 閘板 | Wedge | A276 430&410 | A182 F304 | A182 F304(L) | A182 F316(L) |
| 4 | 閥桿 | Stem | A182 F6 | A182 F304 | A182 F304(L) | A182 F316(L) |
| 5 | 墊片 | Gasket | Corrugated SS+graphite | SS+PTFE | ||
| 6 | 閥蓋 | Bonnet | A105 | A182 F22 | A182 F304(L) | A182 F316(L) |
| 7 | 螺栓 | Bonnet Bolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M |
| 8 | 銷 | Pin | A276 420 | A276 F304 | ||
| 9 | 填料壓套 | Gland | A276 410 | A182 F304(L) | A182 F316(L) | |
| 10 | 活節螺絲 | Glａnd Eyebolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M |
| 11 | 填料壓蓋 | Glａnd Flange | A105 | A182 F11 | A182 F304(L) | A182 F316(L) |
| 12 | 螺母 | Glａnd Nut | A194 2H | A 194 4 | A194 8 | A194 8M |
| 13 | 閥桿螺母 | Stem Nut | A276 420/Cu-Alloy(銅合金) | |||
| 14 | 手輪鎖緊螺母 | H.W.Lock Nut | A 194 2H | A194 4 | A 194 8 | A194 8M |
| 15 | 銘牌 | Nameplate | SS | |||
| 16 | 手輪 | Handwheel | A197 | |||
| 17 | 襯墊 | Bearing Gasket | A473 431 | |||
| 18 | 填料 | Stem Packing | Flexible Graphite | PTFE | ||
| 適用介質 Suitable Medium | (水、油、氣等)W.O.G.etc | (酸類)HNO3,CH3OOH etc | ||||
| 適用溫度 Suitable Temperature | -29℃～425℃ | -29℃～550℃ | -29℃～180℃ | |||
注：可按要求采用其他材料 Note:Other materials are available upon request.
CS=碳鋼 AS=合金鋼 SS=不銹鋼 CS=Carbon Steel;AS=Alloy Steel;SS=Stainless Steel;
技術參數
鍛鋼閘閥尺寸（MM）
（PN6.4MPa)
| DN(mm) | L | D | D1 | D2 | b-f | z-φd | H |
| Z40H-64C Z41Y-64C Z40Y-64P/R/PL/RL Z41Y-64P/R/PL/RL Z40W-64P/R/PL/R Z41W-64P/R/PL/R Z40Y-641 Z41Y-641 (KZ41Y) | |||||||
| 15 | 170 | 105 | 75 | 55 | 18-2 | 4-φ14 | 185 |
| 20 | 190 | 125 | 90 | 68 | 20-2 | 4-φ18 | 200 |
| 25 | 210 | 135 | 100 | 78 | 22-2 | 4-φ18 | 225 |
| 32 | 230 | 150 | 110 | 82 | 24-2 | 4-φ23 | 380 |
| 40 | 240 | 165 | 125 | 95 | 24-3 | 4-φ23 | 300 |
| 50 | 250 | 175 | 135 | 105 | 26-3 | 4-φ23 | 360 |
| 65 | 280 | 200 | 160 | 130 | 28-3 | 8-φ23 | 385 |
| 80 | 310 | 210 | 170 | 140 | 30-3 | 8-φ23 | 400 |
| 100 | 350 | 250 | 200 | 168 | 32-3 | 8-φ25 | 450 |
| 125 | 400 | 296 | 240 | 202 | 36-3 | 8-φ30 | 540 |
| 150 | 450 | 340 | 280 | 240 | 38-3 | 8-φ34 | 630 |
| 200 | 550 | 405 | 345 | 300 | 44-3 | 12-φ34 | 820 |
| 250 | 650 | 470 | 400 | 352 | 48-3 | 12-φ41 | 960 |
| 300 | 750 | 530 | 460 | 412 | 54-4 | 16-φ41 | 1130 |
| 350 | 850 | 595 | 525 | 475 | 60-4 | 16-φ41 | 1300 |
| 400 | 950 | 970 | 585 | 525 | 66-4 | 16-φ48 | 1450 |
| 450 | 1050 | 715 | 630 | 570 | 70-4 | 20-φ48 | 1550 |
| 500 | 1150 | 800 | 705 | 640 | 70-4 | 20-φ54 | 1680 |
| 600 | 1350 | 930 | 820 | 750 | 76-5 | 20-φ58 | 1900 |
（PN1.0MPa)
| DN(mm) | L | D | D1 | D2 | b-f | z-φd | H |
| Z40H-64C Z41Y-64C Z40Y-64P/R/PL/RL Z41Y-64P/R/PL/RL Z40W-64P/R/PL/R Z41W-64P/R/PL/R Z40Y-641 Z41Y-641 (KZ41Y) | |||||||
| 15 | 170 | 105 | 75 | 55 | 20-2 | 4-φ14 | 185 |
| 20 | 190 | 125 | 90 | 68 | 22-2 | 4-φ18 | 200 |
| 25 | 210 | 135 | 100 | 78 | 24-2 | 4-φ18 | 225 |
| 32 | 230 | 150 | 110 | 82 | 24-2 | 4-φ23 | 380 |
| 40 | 240 | 165 | 125 | 95 | 26-3 | 4-φ23 | 300 |
| 50 | 250 | 196 | 145 | 112 | 28-3 | 4-φ25 | 360 |
| 65 | 280 | 220 | 170 | 138 | 32-3 | 8-φ25 | 385 |
| 80 | 310 | 230 | 180 | 148 | 34-3 | 8-φ25 | 400 |
| 100 | 350 | 265 | 210 | 172 | 38-3 | 8-φ30 | 450 |
| 125 | 400 | 310 | 250 | 210 | 42-3 | 8-φ34 | 450 |
| 150 | 450 | 350 | 290 | 250 | 46-3 | 12-φ34 | 630 |
| 200 | 550 | 430 | 360 | 312 | 54-3 | 12-φ41 | 820 |
| 250 | 650 | 500 | 430 | 382 | 60-3 | 12-φ41 | 960 |
| 300 | 750 | 585 | 500 | 442 | 70-3 | 16-φ48 | 1130 |
| 350 | 850 | 655 | 560 | 498 | 46-4 | 16-φ54 | 1300 |
| 400 | 950 | 715 | 620 | 558 | 80-4 | 16-φ54 | 1450 |
| 450 | 1050 | 770 | 675 | 615 | 84-4 | 16-φ58 | 1550 |
| 500 | 1150 | 870 | 760 | 690 | 90-5 | 20-φ58 | 1880 |
