目錄:沈高閥門集團有限公司>>截止閥>> 國標截止閥
一、國標截止閥介紹
國標截止閥屬于強制密封式閥門，所以在閥門關閉時，必須向閥瓣施加壓力，以強制密封面不泄漏。當介質(zhì)由閥瓣下方進入閥門時，操作力所需要克服的阻力，是閥桿和填料的摩擦力與由介質(zhì)的壓力所產(chǎn)生的推力，關閥門的力比開閥門的力大，所以閥桿的直徑要大，否則會發(fā)生閥桿頂彎的故障。近年來，從自密封的閥門出現(xiàn)后，法蘭截止閥的介質(zhì)流向就改由閥瓣上方進入閥腔，這時在介質(zhì)壓力作用下，關閥門的力小，而開閥門的力大，閥桿的直徑可以相應地減少。同時，在介質(zhì)作用下，這種形式的不銹鋼氣動閥門也較嚴密。
壓力試驗
| 公稱壓力 | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 強度試驗 | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 24.0 |
| 水密封試驗 | 1.8 | 2.8 | 4.4 | 7.4 | 11.0 | 18.0 |
| 上密封試驗 | 1.8 | 2.8 | 4.4 | 7.04 | 11.0 | 18.0 |
| 氣密封試驗 | 0.4-0.7 | |||||
二、手動截止閥主要零件材料及性能
| 體蓋扳 | 閥桿 | 密封面 | 墊片(環(huán)) | 填料 | 工作溫度℃ | 適用介質(zhì) |
| WCB | 2Cr13 | 13Cr STL 本體材料 尼龍 | 增強柔性石墨 1Crl3／柔性石墨 08軟鋼 0Cr18Ni9Ti OCr18Ni12Mo2Ti | 柔性石墨 增強柔性石墨 SFB-260 SFP-260 | ≤425 | 水、蒸汽、油品 |
| WC1 | 38CrMoAI 25Cr2MoV | ≤450 | ||||
| WC6 | ≤540 | |||||
| WC9 | ≤570 | |||||
| ZGCr5Mo | ≤540 | |||||
| ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | ≤200 | 硝酸類 | |||
| ZGCr18Ni12Mo2Ti | 1C18Ni12Mo2Ti | ≤200 | 醋酸類 |
三、主要外形和連接尺寸
| 公稱通徑 | 主要外型尺寸和連接尺寸 | ||||||||
| L | D | D1 | D2 | b | f | Z-d | H | D0 | |
| J41H/Y-16C J41W-16P J41W-16R J41Y-16I | |||||||||
| 10 | 130 | 90 | 60 | 40 | 14 | 2 | 4-14 | 198 | 120 |
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 4-14 | 218 | 120 |
| 20 | 150 | 105 | 75 | 55 | 16 | 2 | 4-14 | 258 | 140 |
| 25 | 160 | 115 | 85 | 65 | 16 | 2 | 4-14 | 275 | 160 |
| 32 | 180 | 135 | 100 | 78 | 18 | 2 | 4-18 | 280 | 180 |
| 40 | 200 | 145 | 110 | 85 | 18 | 3 | 4-18 | 330 | 200 |
| 50 | 230 | 160 | 125 | 100 | 18 | 3 | 4-18 | 350 | 240 |
| 65 | 290 | 180 | 145 | 120 | 18 | 3 | 4-18 | 355 | 280 |
| 80 | 310 | 195 | 160 | 135 | 20 | 3 | 8-18 | 400 | 280 |
| 100 | 350 | 215 | 180 | 155 | 22 | 3 | 8-18 | 415 | 320 |
| 125 | 400 | 245 | 210 | 185 | 24 | 3 | 8-23 | 460 | 360 |
| 150 | 480 | 280 | 240 | 210 | 24 | 3 | 12-23 | 510 | 400 |
| 200 | 600 | 335 | 295 | 265 | 26 | 3 | 12-23 | 710 | 400 |
| 250 | 650 | 405 | 355 | 320 | 30 | 3 | 12-23 | 786 | 450 |
| 300 | 750 | 460 | 410 | 375 | 30 | 3 | 12-23 | 925 | 500 |
| 公稱通徑 | 主要外型尺寸和連接尺寸 | ||||||||||
| L | D | D1 | D2 | b | f | Z-d | H手 | H電 | D | 電動裝置 | |
| J41H/Y-25 J41W-25P J41W-25R J41Y-25I J941H/Y-25 J941W-25P J941W-25R J941W-25I | |||||||||||
| 10 | 130 | 90 | 60 | 40 | 16 | 2 | 4-14 | 198 | - | 120 | - |
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 4-14 | 218 | - | 120 | - |
| 20 | 150 | 105 | 75 | 55 | 16 | 2 | 4-14 | 258 | - | 140 | - |
| 25 | 160 | 115 | 85 | 65 | 16 | 2 | 4-14 | 275 | - | 160 | - |
| 32 | 180 | 135 | 100 | 78 | 18 | 2 | 4-18 | 280 | - | 180 | - |
| 40 | 200 | 145 | 110 | 85 | 18 | 3 | 4-18 | 330 | - | 200 | - |
| 50 | 230 | 160 | 125 | 100 | 20 | 3 | 4-18 | 350 | 645 | 240 | DZW10 |
| 65 | 290 | 180 | 145 | 120 | 22 | 3 | 8-18 | 400 | 690 | 280 | DZW10 |
| 80 | 310 | 195 | 160 | 135 | 22 | 3 | 8-18 | 355 | 715 | 280 | DZW15 |
| 100 | 350 | 230 | 190 | 160 | 24 | 3 | 8-23 | 415 | 770 | 320 | DZW20 |
| 125 | 400 | 270 | 220 | 188 | 28 | 3 | 8-25 | 460 | 780 | 360 | DZW30 |
| 150 | 480 | 300 | 250 | 218 | 30 | 3 | 8-25 | 510 | 875 | 400 | DZW45 |
| 200 | 600 | 360 | 310 | 278 | 34 | 3 | 12-25 | 710 | 967 | 400 | DZW60 |
| 250 | 650 | 425 | 370 | 332 | 36 | 3 | 12-30 | 786 | - | 450 | - |
| 300 | 750 | 485 | 430 | 390 | 40 | 4 | 12-30 | 925 | - | 500 | - |
| 公稱通徑 | 主要外型尺寸和連接尺寸 | ||||||||||||
| L | D | D1 | D2 | D6 | b | f | f2 | Z-d | H手 | H電 | D | 電動裝置 | |
| J41H/Y-40 J41W-40P J41W-40R J41Y-40I J941H/Y-40 J941W-40P J941W-40R J941W-40I | |||||||||||||
| 10 | 130 | 90 | 60 | 40 | 35 | 16 | 2 | 2 | 4-14 | 198 | - | 120 | - |
| 15 | 130 | 95 | 65 | 45 | 40 | 16 | 2 | 4 | 4-14 | 233 | - | 120 | - |
| 20 | 150 | 105 | 75 | 55 | 51 | 16 | 2 | 4 | 4-14 | 275 | - | 140 | - |
| 25 | 160 | 115 | 85 | 65 | 58 | 16 | 2 | 4 | 4-14 | 285 | - | 160 | - |
| 32 | 180 | 135 | 100 | 78 | 66 | 18 | 2 | 4 | 4-18 | 302 | - | 180 | - |
| 40 | 200 | 145 | 110 | 85 | 76 | 18 | 3 | 4 | 4-18 | 355 | - | 200 | - |
| 50 | 230 | 160 | 125 | 100 | 88 | 20 | 3 | 4 | 4-18 | 373 | 645 | 240 | DZW10 |
| 65 | 290 | 180 | 145 | 120 | 110 | 22 | 3 | 4 | 4-18 | 408 | 690 | 280 | DZW10 |
| 80 | 310 | 195 | 160 | 135 | 121 | 22 | 3 | 4 | 8-18 | 436 | 715 | 320 | DZW20 |
| 100 | 350 | 230 | 190 | 160 | 150 | 24 | 3 | 4.5 | 8-18 | 480 | 770 | 360 | DZW30 |
| 125 | 400 | 270 | 220 | 188 | 176 | 28 | 3 | 4.5 | 8-23 | 558 | 782 | 400 | DZW45 |
| 150 | 480 | 300 | 250 | 218 | 204 | 30 | 3 | 4.5 | 8-25 | 611 | 875 | 400 | DZW60 |
| 200 | 600 | 375 | 320 | 282 | 260 | 38 | 3 | 4.5 | 12-30 | 720 | 1160 | 400 | DZW90 |
| 公稱通徑 | 主要外形尺寸和連接尺寸 | |||||||||
| L | D | D1 | D2 | D6 | b | Z-d | H | H1 | D0 | |
| J41H/Y-64 J941H/Y-64 J41Y-64I J941Y-64I | ||||||||||
| 15 | 170 | 105 | 75 | 55 | 41 | 18 | 414 | 195 | 210 | 140 |
| 20 | 190 | 125 | 90 | 68 | 51 | 20 | 418 | 228 | 248 | 160 |
| 25 | 210 | 135 | 100 | 78 | 58 | 22 | 418 | 250 | 275 | 180 |
| 32 | 230 | 150 | 110 | 82 | 66 | 24 | 423 | 325 | 355 | 200 |
| 40 | 260 | 165 | 125 | 95 | 76 | 24 | 423 | 360 | 395 | 240 |
| 50 | 300 | 175 | 135 | 105 | 88 | 26 | 423 | 410 | 450 | 280 |
| 65 | 340 | 200 | 160 | 130 | 110 | 28 | 823 | 450 | 494 | 320 |
| 80 | 380 | 210 | 170 | 140 | 121 | 30 | 823 | 485 | 485 | 360 |
| 100 | 430 | 250 | 200 | 168 | 150 | 32 | 825 | 537 | 537 | 400 |
| 150 | 550 | 340 | 280 | 240 | 204 | 38 | 834 | 646 | 646 | 450 |
| 200 | 650 | 405 | 345 | 300 | -- | 44 | 1234 | 813 | 813 | 500 |
| J41H/Y-100 J941H/Y-100 J41Y-100I J941Y-100I | ||||||||||
| 15 | 170 | 105 | 75 | 55 | 40 | 20 | 414 | 195 | 210 | 100 |
| 20 | 190 | 125 | 90 | 68 | 51 | 22 | 418 | 228 | 248 | 120 |
| 25 | 210 | 135 | 100 | 78 | 58 | 24 | 418 | 250 | 275 | 160 |
| 32 | 230 | 150 | 110 | 82 | 66 | 24 | 423 | 326 | 348 | 200 |
| 40 | 260 | 165 | 125 | 95 | 76 | 26 | 423 | 359 | 388 | 240 |
| 50 | 300 | 195 | 145 | 112 | 88 | 28 | 425 | 414 | 448 | 280 |
| 65 | 340 | 220 | 170 | 138 | 110 | 32 | 825 | 434 | 477 | 320 |
| 80 | 380 | 230 | 180 | 148 | 121 | 34 | 825 | 547 | 598 | 400 |
| 100 | 430 | 265 | 210 | 172 | 150 | 38 | 830 | 621 | 685 | 450 |
| 125 | 500 | 310 | 250 | 210 | 176 | 42 | 834 | - | - | - |
| 150 | 550 | 350, | 290 | 250 | 204 | 46 | 1234 | 840 | - | - |
| 200 | 650 | 430 | 360 | 312 | 260 | 54 | 1241 | 925 | - | - |
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