【截止閥】也叫截門，是使用zui廣泛的一種閥門！它之所以廣受歡迎，是由于①開閉過程中密封面之間摩擦力小。②比較耐用。③開啟高度不大。④制造容易。⑤維修方便。⑥不僅適用于中低壓，也適用于高壓?！捐T鋼法蘭截止閥】的閉合原理是，依靠閥杠壓力，使閥瓣密封面與閥座密封面緊密貼合，阻止介質(zhì)流通。截止閥只許介質(zhì)單向流動(dòng)，安裝時(shí)有方向性。截止閥的結(jié)構(gòu) 長度大于閘閥，同時(shí)流體阻力大，*運(yùn)行時(shí)，密封可靠性不強(qiáng)。 鑄鋼法蘭截止閥概述： 鑄鋼法蘭截止閥的啟閉件是圓柱形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運(yùn)動(dòng)。國標(biāo)截止閥只適用于全開和全關(guān)，一般不用來調(diào)節(jié)流量，定做時(shí)允許作調(diào)節(jié)和節(jié)流。公稱壓力1.6MPa-16.0MPa，工作溫度-29～550℃的石油、化工、制藥、化肥、電力行業(yè)等各種工況的管路上，切斷或接通管路介質(zhì)。驅(qū)動(dòng)方式有手動(dòng)、齒輪傳動(dòng)、電動(dòng)、氣動(dòng)等。 （1）、產(chǎn)品特點(diǎn)：①、結(jié)構(gòu)簡單，制造和維修比較方便。②、工作行程小，啟閉時(shí)間短。③、密封性好，密封面間磨擦力小，壽命較長。 （2）、執(zhí)行標(biāo)準(zhǔn)：①、設(shè)計(jì)規(guī)范：GB/T 1223。②、結(jié)構(gòu)長度：GB/T 12221。③、法蘭連接：JB/T 79。④、試驗(yàn)與檢驗(yàn)：JB/T 9002。⑤、產(chǎn)品標(biāo)識(shí)：GB/T 12220。⑥、供貨規(guī)范：JB/T 7928 鑄鋼法蘭截止閥執(zhí)行標(biāo)準(zhǔn) Administer Standard 設(shè)計(jì)與制造Design and Manufacture | 結(jié)構(gòu)長度
Face To Face | 法蘭尺寸
Flange Dimension | 壓力-溫度Pressure Temperature Lating | 試驗(yàn)-檢驗(yàn)Inspection And Test | GB122235 | GB12221 | GB9113 JB79 | GB9131 | GB/T13927 JB/T9092 |
鑄鋼法蘭截止閥壓力試驗(yàn) Pressure Test 公稱壓力NominalPressure | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 | 強(qiáng)度試驗(yàn) Shell Test | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 24.0 | 水密封試驗(yàn) Water Seal Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 18.0 | 上密封試驗(yàn)Backseat Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 18.0 | 氣密封試驗(yàn) Air Seal Test | 0.5-0.7 |
鑄鋼法蘭截止閥主要零件材料及性能 Main Part Materials and Property 體、蓋、板 Body Cover Disc | 閥桿
Stem | 密封面Sealing Face | 墊片
Sealing Shim | 填料
Packing | 工作溫度℃Working Temperature | 適用介質(zhì)Suitable Medium | | WCB | 2Cr13 | 13Cr STL 木體材料 With Body Material 尼龍 Nylon | 增強(qiáng)柔性石墨 Enhanced Flexible Graphite 13Cr/柔性石墨 1Cr13/Flexible Graphite 08軟鋼 08 Soft Steal 0Cr18Ni9Ti 0Cr17Ni12Mo2Ti XD550F(T) PTFE | 柔性石墨 增強(qiáng)柔性石墨 Flexible Graphite Enhanced Flexible Graphite SFB/260 SFP/260 PTFE | ≤425 | 水 蒸汽 油品 Water Steam Petroleum Ptoducts | | WC1 | 38CrMoAl 25Cr2MoV | ≤450 | | WC6 | ≤540 | | WC9 | ≤570 | | C5 C12 | ≤540 | | ZGCr5Mo | ≤200 | 硝酸類Nitric acid | | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | | ≤200 | 醋酸類Acetic acid | | ZG1Cr18Ni12Mo2Ti | 1Cr18Ni12Mo2Ti | |
鑄鋼法蘭截止閥規(guī)格 主要尺寸和重量 Size Main Dimensions and Weight (mm kg) 
1.6MPa | DN | L | D | D1 | D2 | b | n-φd | H | Do | 重量Weight | 凸面 法蘭
RF
J41H
J41Y
J41W
J41F
J41N 16C
16P
16R
16I | 10 | 130 | 90 | 60 | 40 | 14 | 4-14 | 198 | 120 | 4.9 | 15 | 130 | 95 | 65 | 45 | 14 | 4-14 | 218 | 120 | 5.3 | 20 | 150 | 105 | 75 | 55 | 14 | 4-14 | 258 | 140 | 7.0 | 25 | 160 | 115 | 85 | 65 | 14 | 4-14 | 275 | 160 | 7.4 | 32 | 180 | 135 | 100 | 78 | 16 | 4-18 | 280 | 180 | 8.3 | 40 | 200 | 145 | 110 | 85 | 16 | 4-18 | 330 | 200 | 12.6 | 50 | 230 | 160 | 125 | 100 | 16 | 4-18 | 350 | 240 | 14 | 65 | 290 | 180 | 145 | 120 | 18 | 4-18 | 400 | 280 | 22.7 | 80 | 310 | 195 | 160 | 135 | 20 | 8-18 | 355 | 280 | 29 | 100 | 350 | 215 | 180 | 155 | 20 | 8-18 | 415 | 320 | 32.8 | 125 | 400 | 245 | 210 | 185 | 22 | 8-18 | 460 | 360 | 79.5 | 150 | 480 | 280 | 240 | 210 | 24 | 8-23 | 510 | 400 | 93 | 200 | 600 | 335 | 295 | 265 | 26 | 12-23 | 710 | 400 | 179 | 250 | 622 | 405 | 355 | 320 | 30 | 12-25 | 786 | 450 | 441 | 300 | 698 | 460 | 410 | 375 | 30 | 12-25 | 925 | 500 | 646 |
鑄鋼法蘭截止閥規(guī)格 主要尺寸和重量 Size Main Dimensions and Weight (mm kg) 2.5MPa | DN | L | D | D1 | D2 | b | n-φd | H | Do | 重量Weight | 凸面法蘭
RF
J41H
J41Y
J41W
J41F
J41N 25C
25P
25R
25I | 10 | 130 | 90 | 60 | 40 | 16 | 4-14 | 198 | 120 | 4.9 | 15 | 130 | 95 | 65 | 45 | 16 | 4-14 | 218 | 120 | 5.3 | 20 | 150 | 105 | 75 | 55 | 16 | 4-14 | 258 | 140 | 7.0 | 25 | 160 | 115 | 85 | 65 | 16 | 4-14 | 275 | 160 | 7.4 | 32 | 180 | 135 | 100 | 78 | 18 | 4-18 | 280 | 180 | 8.3 | 40 | 200 | 145 | 110 | 85 | 18 | 4-18 | 330 | 200 | 12.6 | 50 | 230 | 160 | 125 | 100 | 20 | 8-18 | 350 | 240 | 16 | 65 | 290 | 180 | 145 | 120 | 22 | 8-18 | 400 | 280 | 25 | 80 | 310 | 195 | 160 | 135 | 22 | 8-23 | 355 | 280 | 30 | 100 | 350 | 230 | 190 | 160 | 24 | 8-25 | 415 | 320 | 34.8 | 125 | 400 | 270 | 220 | 188 | 28 | 8-25 | 460 | 360 | 89.5 | 150 | 480 | 300 | 250 | 218 | 30 | 12-25 | 510 | 400 | 99 | 200 | 600 | 360 | 310 | 278 | 34 | 12-25 | 710 | 400 | 181 | 250 | 622 | 425 | 370 | 332 | 36 | 12-30 | 786 | 450 | 445 | 300 | 698 | 485 | 430 | 390 | 40 | 16-30 | 925 | 500 | 651 |
鑄鋼法蘭截止閥規(guī)格 主要尺寸和重量 Size Main Dimensions and Weight (mm kg) 4.0MPa | DN | L | D | D1 | D2 | b | n-φd | H | D0 | 重量Weight | 凹凸法蘭MFM J41H J41Y J41W J41F J41N 40C 40P 40R 40I | 20 | 150 | 105 | 75 | 51 | 16 | 4-14 | 275 | 140 | 7 | 25 | 160 | 115 | 85 | 58 | 16 | 4-14 | 285 | 160 | 9 | 32 | 180 | 135 | 100 | 66 | 18 | 4-18 | 302 | 180 | 12 | 40 | 200 | 145 | 110 | 76 | 18 | 4-18 | 355 | 200 | 17 | 50 | 230 | 160 | 125 | 88 | 20 | 4-18 | 373 | 240 | 24 | 65 | 290 | 180 | 145 | 110 | 22 | 8-18 | 408 | 280 | 33 | 80 | 310 | 195 | 160 | 121 | 22 | 8-18 | 436 | 320 | 44 | 100 | 350 | 230 | 190 | 150 | 24 | 8-23 | 480 | 360 | 60 | 125 | 400 | 270 | 220 | 176 | 28 | 8-25 | 588 | 400 | 90 | 150 | 480 | 300 | 250 | 204 | 30 | 8-25 | 611 | 400 | 100 | 200 | 533 | 375 | 320 | 260 | 38 | 12-30 | 720 | 400 | 190 | 6.4MPa | 20 | 190 | 125 | 90 | 51 | 20 | 4-18 | 228 | 160 | 13 | 凹凸法蘭MFM J41H J41Y J41W J41F J41N 64C 64P 64R 64I | 25 | 210 | 135 | 100 | 58 | 22 | 4-18 | 275 | 180 | 15 | 32 | 230 | 150 | 110 | 66 | 24 | 4-23 | 325 | 200 | 19 | 40 | 260 | 165 | 125 | 76 | 24 | 4-23 | 360 | 240 | 25 | 50 | 300 | 175 | 135 | 88 | 26 | 4-23 | 410 | 280 | 35 | 65 | 340 | 200 | 160 | 110 | 28 | 8-23 | 450 | 320 | 48 | 80 | 380 | 210 | 170 | 121 | 30 | 8-23 | 485 | 360 | 56 | 100 | 430 | 250 | 200 | 150 | 32 | 8-25 | 537 | 400 | 125 | 125 | 500 | 295 | 240 | 176 | 36 | 8-30 | 631 | 400 | 130 | 150 | 550 | 340 | 280 | 204 | 38 | 8-34 | 646 | 450 | 160 | 200 | 650 | 405 | 345 | 260 | 44 | 12-34 | 813 | 500 | 285 | 10.0MPa | 10 | 170 | 100 | 70 | 35 | 20 | 4-14 | 198 | 120 | 6 | 凹凸法蘭MFM J41H J41Y J41W J41F J41N 100C 100P 100R 100I | 15 | 170 | 105 | 75 | 40 | 20 | 4-14 | 202 | 140 | 11 | 20 | 190 | 125 | 90 | 51 | 22 | 4-18 | 228 | 160 | 13 | 25 | 210 | 135 | 100 | 58 | 24 | 4-18 | 250 | 180 | 14 | 32 | 230 | 150 | 110 | 66 | 24 | 4-23 | 326 | 220 | 16 | 40 | 260 | 165 | 125 | 76 | 26 | 4-23 | 359 | 240 | 30 | 50 | 300 | 195 | 145 | 88 | 28 | 4-25 | 414 | 280 | 50 | 65 | 340 | 220 | 170 | 110 | 32 | 8-25 | 434 | 320 | 65 | 80 | 380 | 230 | 180 | 121 | 34 | 8-25 | 547 | 400 | 100 | 100 | 430 | 265 | 210 | 150 | 38 | 8-30 | 621 | 450 | 116 | 125 | 500 | 310 | 250 | 176 | 42 | 8-34 | 732 | 450 | 150 | 150 | 550 | 350 | 290 | 204 | 46 | 12-34 | 840 | 500 | 300 | 200 | 650 | 430 | 360 | 260 | 54 | 12-41 | 925 | 550 | 600 | 16.0 | 15 | 170 | 110 | 75 | 40 | 24 | 4-18 | 148 | 140 | 12 | 環(huán)槽法蘭RTJ J41H J41Y J41W 160C 160P 160R 160I | 20 | 190 | 130 | 90 | 51 | 26 | 4-23 | 156 | 160 | 15 | 25 | 210 | 140 | 100 | 58 | 28 | 4-23 | 175 | 180 | 17 | 32 | 230 | 165 | 115 | 66 | 30 | 4-25 | 200 | 200 | 21 | 40 | 260 | 175 | 125 | 76 | 32 | 4-27 | 231 | 240 | 31 | 50 | 300 | 215 | 165 | 88 | 36 | 8-25 | 262 | 250 | 53 | 65 | 340 | 245 | 190 | 110 | 44 | 8-30 | 303 | 320 | 70 | 80 | 380 | 260 | 205 | 121 | 46 | 8-30 | 341 | 400 | 100 | 100 | 430 | 300 | 240 | 150 | 48 | 8-34 | 485 | 450 | 120 |
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