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call us now
86 158 8873 2537
email us now
rtv@zjrtfm.com
stainless steel check valve
the release date:[2017-08-07] hits
main features: chief features :
1. in the flange bolt connection 1.bolted bonnet
2. horizontal and vertical pipeline for 2. as horizontal or vertical lines
3. swing or lift type valve 3.swing or lift type disc
4. standard flange connection 4.flanged ends
rotary check valve product specification
product specification product specification | design specification design spec | structure length face to face | connecting flange flange end | test and test test & check | pressure - temperature pressure-temp | product identification marking | supply specification supply |
gb / t 12236 gb / t 12235 | gb / t 12221 | jb / t 79 | jb / t 9092 | gb / t 9131 | gb / t 12220 | jb / t 7928 |
swivel check valve main parts material main part material
part name | body material | part name | |||
body / bonnet | wcb | wc6 | lcb | cf8m | body / bonnet |
discs | 25 | 1cr18ni9ti | 1cr18ni9ti | 1cr18ni9ti | disk |
around the axis | wcb | 25cr2mov | lcb | cf8m | swing arm |
gasket | 18-8 flexible graphite / 18-8flexible | graphite gasket | |||
bolt | 35 / 35crmo | 25cr2mov | 1cr18ni9 | 1cr18ni9 | bolt |
proper temperature | -29 to 425 ° c | -29 ~ 550 ℃ | -46 to 350 ° c | -40 to 550 ° c | suitable temp |
适用介质 | 水,油品,蒸汽 water,oil,steam | 蒸汽,油品 steam,oil | 丙烷,乙烯 propane,ethane | 硝酸类 nitric acid | suitable medium |
旋启式止回阀主要外形和连接尺寸main external and connection
主要外形和主要连接尺寸main external and connection dimension
公称通径 dn | 主要外形尺寸和连接尺寸(mm)main external and connection dimensions | 重量 wt(kg) | ||||||
l | d | d1 | d2 | b | z-φd | h | ||
h41h-16c h41w-16c h41w-16p h41w-16r h41w-16i | ||||||||
15 | 130 | 96 | 65 | 45 | 14 | 4-φ14 | 77 | 3 |
20 | 150 | 105 | 75 | 55 | 14 | 4-φ14 | 77 | 4 |
25 | 160 | 115 | 85 | 65 | 14 | 4-φ14 | 80 | 5 |
32 | 180 | 135 | 100 | 78 | 16 | 4-φ18 | 85 | 7 |
40 | 200 | 145 | 110 | 85 | 16 | 4-φ18 | 95 | 9 |
50 | 230 | 160 | 125 | 100 | 16 | 4φ-18 | 105 | 10 |
65 | 290 | 180 | 145 | 120 | 18 | 4-φ18 | 120 | 20 |
80 | 310 | 195 | 160 | 135 | 20 | 8-φ18 | 130 | 30 |
100 | 350 | 215 | 180 | 155 | 20 | 8-φ18 | 140 | 39 |
125 | 400 | 245 | 210 | 185 | 22 | 8-φ18 | 155 | 50 |
150 | 480 | 280 | 240 | 210 | 24 | 8-φ23 | 180 | 70 |
200 | 600 | 335 | 295 | 265 | 26 | 12-φ23 | 215 | 161 |
250 | 730 | 405 | 355 | 320 | 32 | 12-φ25 | 260 | 251 |
300 | 850 | 460 | 410 | 375 | 34 | 12-φ25 | 315 | 395 |
h41h-25 h41w-25 h41w-25p h41w-25r h41w-25i | ||||||||
15 | 130 | 95 | 65 | 45 | 16 | 4-φ14 | 100 | 3.4 |
20 | 150 | 105 | 75 | 55 | 16 | 4-φ14 | 105 | 5 |
25 | 160 | 115 | 85 | 65 | 16 | 4-φ14 | 120 | 5.7 |
32 | 180 | 135 | 100 | 78 | 18 | 4-φ18 | 130 | 9.1 |
40 | 200 | 145 | 110 | 85 | 18 | 4-φ18 | 135 | 11.8 |
50 | 230 | 160 | 125 | 100 | 20 | 4-φ18 | 149 | 14.4 |
65 | 290 | 180 | 145 | 120 | 22 | 8-φ18 | 160 | 23 |
80 | 310 | 195 | 160 | 135 | 22 | 8-φ18 | 169 | 30 |
100 | 350 | 230 | 190 | 160 | 24 | 8-φ23 | 194 | 44 |
125 | 400 | 270 | 220 | 188 | 28 | 8-φ25 | 222 | 65 |
150 | 480 | 300 | 250 | 218 | 30 | 8-φ25 | 255 | 99 |
200 | 600 | 360 | 310 | 278 | 34 | 12-φ25 | 305 | 190 |
250 | 730 | 425 | 370 | 332 | 36 | 12-φ30 | 355 | 315 |
300 | 850 | 485 | 430 | 390 | 40 | 16-φ30 | 410 | 450 |
旋启式止回阀属性
1,本阀门通路两端须堵塞,存在干燥通风的室内。如长期存放,应经常检查防锈蚀。
2,安装前应将阀门清洗干净,并消除在运输过程中造成的缺陷。
3,安装时必须仔细核对阀门上的标志和铭牌是否符合使用要求。
4,升降式垂直瓣止回阀应安装在垂直管道上。
5,升降式水平瓣止回阀应安装在水平管道上。
6,在管线中不要使止回阀承受重量,大型的止回阀应独立支撑,使之不受管系产生的压力的影响。
7,安装止回阀时,应特别注意介质流动方向,应使介质正常流动方向与阀体上指示的箭头方向相一致,否则就会截断介质的正常流动。底阀应安装在水泵吸水管路的底端。
8,通式升降式止回阀应安装于水平管路上,立式升降式止回阀和底阀一般安装在垂直管路上,并且介质自下而上流动。
9,止回阀关闭时,会在管路中产生水锤压力,严重时会导致阀门、管路或设备的损坏,尤其对于大口管路或高压管路,故应引起止回阀选用者的高度注意。
★旋启式采用的标准:
本阀门在使用过程中,介质按图示箭头方向流动。
1,当介质按规定方向流动时,阀瓣受介质力的作用,被开启介质逆流时,因阀瓣自重和阀瓣受介质反向力的作用,使阀瓣与阀座的密封面密合而关闭,达到阻止介质逆流的目的。
2,阀体及阀瓣的密封面采用不锈钢堆焊。
3,本阀门的结构长度按gb12221-1989的规定,法兰连接尺寸按jb/t79-1994的规定
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