截止閥特點(diǎn)介紹:
1、截止閥結(jié)構(gòu)比閘閥簡(jiǎn)單,制造與維修都比較方便。
2、密封面不易磨損及擦傷,密封性好,啟閉時(shí)閥瓣與閥體密封面之間無(wú)相對(duì)滑動(dòng),因?yàn)槟p與擦傷不嚴(yán)重,密封性能好,使用壽命長(zhǎng)。
3、啟閉時(shí),閥瓣行程小,因而截止閥高度比閘閥小,但結(jié)構(gòu)長(zhǎng)度比閘閥長(zhǎng)。
4、啟閉力矩大,啟閉較費(fèi)力,啟閉時(shí)間較長(zhǎng)。
5、流體阻力大,因閥體內(nèi)介質(zhì)管道較曲折,流體阻力大,動(dòng)力消耗大。
6、介質(zhì)流動(dòng)方向:公稱(chēng)通徑DN≤200時(shí),一般采用順流,介質(zhì)從閥瓣下方向上流;公稱(chēng)通徑≥200時(shí),一般采用逆流,介質(zhì)從閥瓣上方向下流,以增加密封性能。使用時(shí),截止閥介質(zhì)只能單方向流動(dòng),不能改變流動(dòng)方向。
截止閥執(zhí)行標(biāo)準(zhǔn):
設(shè)計(jì)標(biāo)準(zhǔn):GB/T24925-2019
結(jié)構(gòu)長(zhǎng)度:GB/T12221-2005
法蘭標(biāo)準(zhǔn):HG/T20592-2009
檢驗(yàn)與試驗(yàn):GB/T13927-2008
主要尺寸 Dimensions of Flanged End | ||||||||||||
公稱(chēng)壓力Nominal Pressure | Size | Dimension(mm) | ||||||||||
DN | L | D(1) | D(2) | C | g | T | t | H | W | n-? | ||
PN1.6MPa | 15 | 130 | 95 | 95 | 65 | 46 | 14 | 2 | 218 | 120 | 4-14 | |
20 | 150 | 105 | 105 | 75 | 56 | 16 | 2 | 258 | 140 | 4-14 | ||
25 | 160 | 115 | 115 | 85 | 65 | 16 | 2 | 275 | 160 | 4-14 | ||
32 | 180 | 135 | 135 | 100 | 78 | 16 | 2 | 282 | 180 | 4-18 | ||
40 | 200 | 145 | 150 | 110 | 84 | 18 | 2 | 330 | 200 | 4-18 | ||
50 | 230 | 160 | 165 | 125 | 99 | 20 | 2 | 350 | 240 | 4-18 | ||
65 | 290 | 180 | 185 | 145 | 118 | 20 | 2 | 400 | 280 | 8-18 | ||
80 | 310 | 195 | 200 | 160 | 132 | 20 | 2 | 355 | 280 | 8-18 | ||
100 | 350 | 215 | 220 | 180 | 156 | 22 | 2 | 415 | 320 | 8-18 | ||
125 | 400 | 245 | 250 | 210 | 184 | 22 | 2 | 460 | 360 | 8-22 | ||
150 | 480 | 280 | 285 | 240 | 211 | 24 | 2 | 510 | 400 | 8-22 | ||
200 | 600 | 335 | 340 | 295 | 266 | 24 | 2 | 710 | 400 | 12-22 | ||
250 | 650 | 405 | 405 | 355 | 319 | 26 | 2 | 786 | 450 | 12-26 | ||
300 | 750 | 460 | 460 | 410 | 370 | 28 | 2 | 925 | 500 | 12-26 | ||
350 | 850 | 520 | 520 | 470 | 435 | 34 | 2 | 1075 | 700 | 16-25 | ||
400 | 950 | 580 | 580 | 525 | 485 | 36 | 2 | 1235 | 800 | 16-30 | ||
450 | 1200 | 640 | 640 | 585 | 545 | 40 | 2 | ˉ | 1000 | 20-30 | ||
500 | 1250 | 705 | 705 | 650 | 608 | 44 | 2 | ˉ | 1000 | 20-34 | ||
主要尺寸 Dimensions of Flanged End | ||||||||||||
公稱(chēng)壓力Nominal Pressure | Size | Dimension(mm) | ||||||||||
DN | L | D(1) | D(2) | C | g | T | t | H | W | n-? | ||
PN2.5MPa | 15 | 130 | 95 | 95 | 65 | 45 | 16 | 2 | 218 | 120 | 4-14 | |
20 | 150 | 105 | 105 | 75 | 55 | 16 | 2 | 260 | 140 | 4-14 | ||
25 | 160 | 115 | 115 | 85 | 65 | 16 | 2 | 275 | 160 | 4-14 | ||
32 | 180 | 135 | 135 | 100 | 78 | 18 | 2 | 282 | 180 | 4-18 | ||
40 | 200 | 145 | 150 | 110 | 85 | 18 | 3 | 332 | 200 | 4-18 | ||
50 | 230 | 160 | 165 | 125 | 99 | 20 | 3 | 350 | 240 | 4-18 | ||
65 | 290 | 180 | 185 | 145 | 120 | 22 | 3 | 405 | 280 | 8-18 | ||
80 | 310 | 195 | 200 | 160 | 135 | 22 | 3 | 360 | 280 | 8-18 | ||
100 | 350 | 230 | 235 | 190 | 160 | 24 | 3 | 412 | 320 | 8-23 | ||
125 | 400 | 270 | 275 | 220 | 188 | 28 | 3 | 462 | 360 | 8-25 | ||
150 | 480 | 300 | 305 | 250 | 218 | 30 | 3 | 510 | 400 | 8-25 | ||
200 | 600 | 360 | 365 | 310 | 278 | 34 | 3 | 715 | 400 | 12-25 | ||
250 | 650 | 425 | 430 | 370 | 322 | 36 | 3 | 789 | 450 | 12-30 | ||
300 | 750 | 485 | 490 | 430 | 390 | 40 | 4 | 925 | 500 | 16-34 | ||
350 | 850 | 550 | 555 | 490 | 448 | 44 | 4 | 1025 | 700 | 16-34 | ||
400 | 950 | 610 | 615 | 550 | 505 | 48 | 4 | 1235 | 800 | 16-34 | ||
450 | 1200 | 660 | 665 | 600 | 555 | 50 | 4 | ˉ | 1000 | 20-34 | ||
500 | 1250 | 730 | 735 | 660 | 610 | 52 | 4 | ˉ | 1000 | 20-41 | ||
PN4.0MPa | 15 | 130 | 95 | 95 | 65 | 46 | 14 | 2 | 233 | 120 | 4-14 | |
20 | 150 | 105 | 105 | 75 | 56 | 16 | 2 | 275 | 140 | 4-14 | ||
25 | 160 | 115 | 115 | 85 | 65 | 16 | 2 | 285 | 160 | 4-14 | ||
32 | 180 | 135 | 140 | 100 | 78 | 18 | 2 | 305 | 180 | 4-18 | ||
40 | 200 | 145 | 150 | 110 | 84 | 18 | 3 | 355 | 200 | 4-18 | ||
50 | 230 | 160 | 165 | 125 | 99 | 20 | 3 | 373 | 240 | 4-18 | ||
65 | 290 | 180 | 185 | 145 | 118 | 22 | 3 | 408 | 280 | 8-18 | ||
80 | 310 | 195 | 200 | 160 | 132 | 24 | 3 | 436 | 320 | 8-18 | ||
100 | 350 | 230 | 235 | 190 | 156 | 24 | 3 | 480 | 360 | 8-22 | ||
125 | 400 | 270 | 270 | 220 | 184 | 26 | 3 | 558 | 400 | 8-25 | ||
150 | 480 | 300 | 300 | 250 | 211 | 28 | 3 | 611 | 400 | 8-26 | ||
200 | 600 | 375 | 375 | 320 | 284 | 34 | 3 | 720 | 400 | 12-30 | ||
主體外形和連接尺寸Main External and Connection Dimension | ||||||||||||
公稱(chēng)壓力Nominal Pressure | Size | Dimension(mm) | ||||||||||
DN | d | L | D(1) | D(2) | C | g | T | t | H | W | n-? | |
PN6.4MPa | 15 | 15 | 170 | 105 | 110 | 75 | 55 | 18 | 2 | 218 | 140 | 4-14 |
20 | 20 | 190 | 125 | 130 | 90 | 68 | 20 | 2 | 260 | 160 | 4-18 | |
25 | 25 | 210 | 135 | 140 | 100 | 78 | 22 | 2 | 275 | 180 | 4-18 | |
32 | 32 | 230 | 150 | 155 | 110 | 82 | 24 | 2 | 325 | 200 | 4-23 | |
40 | 40 | 260 | 165 | 170 | 125 | 95 | 24 | 3 | 360 | 240 | 4-23 | |
50 | 50 | 300 | 175 | 188 | 135 | 105 | 26 | 3 | 410 | 280 | 4-23 | |
65 | 65 | 340 | 200 | 205 | 160 | 130 | 28 | 3 | 450 | 320 | 8-23 | |
80 | 80 | 380 | 210 | 215 | 170 | 140 | 30 | 3 | 485 | 360 | 8-23 | |
100 | 100 | 430 | 250 | 255 | 200 | 168 | 32 | 3 | 535 | 400 | 8-25 | |
125 | 125 | 500 | 295 | 300 | 240 | 202 | 36 | 3 | 630 | 400 | 8-30 | |
150 | 150 | 550 | 340 | 345 | 280 | 240 | 38 | 3 | 650 | 450 | 8-34 | |
200 | 200 | 650 | 405 | 410 | 345 | 300 | 44 | 3 | 810 | 500 | 12-34 | |
PN10.0MPa | 15 | 15 | 170 | 105 | 110 | 75 | 55 | 20 | 2 | 220 | 120 | 4-14 |
20 | 20 | 190 | 125 | 130 | 90 | 68 | 22 | 2 | 260 | 140 | 4-18 | |
25 | 25 | 210 | 135 | 140 | 100 | 78 | 24 | 2 | 275 | 160 | 4-18 | |
32 | 32 | 230 | 150 | 155 | 110 | 82 | 24 | 2 | 325 | 180 | 4-23 | |
40 | 40 | 260 | 165 | 170 | 125 | 95 | 26 | 3 | 360 | 200 | 4-23 | |
50 | 50 | 300 | 195 | 200 | 145 | 112 | 28 | 3 | 415 | 240 | 4-25 | |
65 | 65 | 340 | 220 | 225 | 170 | 138 | 32 | 3 | 455 | 280 | 8-25 | |
80 | 80 | 380 | 230 | 235 | 180 | 148 | 34 | 3 | 485 | 280 | 8-25 | |
100 | 100 | 430 | 265 | 270 | 210 | 172 | 38 | 3 | 538 | 320 | 8-30 | |
125 | 125 | 500 | 310 | 315 | 250 | 210 | 42 | 3 | 635 | 360 | 8-34 | |
150 | 150 | 550 | 350 | 355 | 290 | 250 | 46 | 3 | 650 | 400 | 12-34 | |
200 | 200 | 650 | 430 | 435 | 360 | 312 | 54 | 3 | 812 | 400 | 12-41 |