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H46-6.4-DN250,H46-6.4-DN300,H46-10.0-DN50,H46-10.0-DN65, H46-10.0-DN80,H46-10.0-DN100,H46-10.0-DN125,H46-10.0-DN150,H46-10.0-DN200,H46-10.0-DN250,H46-10.0-DN300,对夹双瓣旋启式止回阀

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型号: H46-1.0-DN50,H46-1.0-DN65,H46-1.0-DN80,H46-1.0-DN100,H46-1.0-DN125,H46-1.0-DN150,H46-1.0-DN200,H46-1
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H46-1.0-DN50,H46-1.0-DN65,H46-1.0-DN80,H46-1.0-DN100,H46-1.0-DN125,H46-1.0-DN150,H46-1.0-DN200,H46-1.0-DN250,H46-1.0-DN300,H46-1.0-DN350,H46-1.0-DN400,H46-1.0-DN450,H46-1.0-DN500,H46-1.0-DN600,

H46-1.6-DN50,H46-1.6-DN65,H46-1.6-DN80,H46-1.6-DN100,H46-1.6-DN125,H46-1.6-DN150,H46-1.6-DN200,H46-1.6-DN250,H46-1.6-DN300,H46-1.6-DN350,

H46-1.6-DN400,H46-1.6-DN450,H46-1.6-DN500,H46-1.6-DN600,H46-2.5-DN50,H46-2.5-DN65,H46-2.5-DN80,H46-2.5-DN100,H46-2.5-DN125,H46-2.5-DN150,

H46-2.5-DN200,H46-2.5-DN250,H46-2.5-DN300,H46-2.5-DN350,H46-2.5-DN400,H46-2.5-DN450,H46-2.5-DN500,H46-2.5-DN600,H46-4.0-DN50,H46-4.0-DN65,

H46-4.0-DN80,H46-4.0-DN100,H46-4.0-DN125,H46-4.0-DN150,H46-4.0-DN200,H46-4.0-DN250,H46-4.0-DN300,H46-4.0-DN350,H46-4.0-DN400,H46-6.4-DN50,

H46-6.4-DN65,H46-6.4-DN80,H46-6.4-DN100,H46-6.4-DN125,H46-6.4-DN150,H46-6.4-DN200,H46-6.4-DN250,H46-6.4-DN300,H46-10.0-DN50,H46-10.0-DN65,

H46-10.0-DN80,H46-10.0-DN100,H46-10.0-DN125,H46-10.0-DN150,H46-10.0-DN200,H46-10.0-DN250,H46-10.0-DN300,对夹双瓣旋启式止回阀

针对国内传统使用的H44型法兰连接旋启式止回阀具有体积笨大,流体阻力大,阀门关闭时水锤压力高,安装、维修难,使用寿命短等缺点。阀门供应网针对传统法兰结构止回阀存在的问题,研制生产了对夹式止回阀系列,H76对夹双瓣旋启式止回阀具有结构长度短,体积小、重量轻,阀瓣关闭快速,水锤压力小,安装方便,流体阻力小,动作灵敏、密封性能好,阀瓣行程短、关阀冲击力小,整体结构、简单紧凑,使用寿命长、可靠性高等特点。

双瓣旋启对夹式止回阀由阀体、阀瓣、阀杆及弹簧等零件组成,采用对夹式连接,结构紧凑。由于阀瓣的关闭行程短,并有弹簧加载,关闭速度快,可显著减少水锤现象。产品具有体积小、重量轻、动作灵敏、密封可靠、安装方便等特点,可水平安装或垂直安装,可适用于水、蒸气、油品、硝酸、醋酸、强氧化性介质等多种介质。

H46对夹双瓣旋启式止回阀应用范围
双瓣旋启对夹式止回阀适用于公称压力PN10~PN420、Class150~Class2500;公称通径DN15~DN1200、NPS1/2~48;工作温度-196℃~540℃的各种管路上,用于防止介质倒流。通过选用不同的材质,对夹式止回阀可适用于石化、冶金、电力、轻工、食品等行业中水、蒸汽、油品、硝酸、醋酸、强氧化性介质及尿素等多种介质。 

H46对夹双瓣旋启式止回阀结构特点
1. 结构长度短,其结构长度只有传统法兰止回阀的1/4~1/8; 
2. 体积小、重量轻,其重量只有传统法兰止回阀的1/4~1/20;
3. 阀瓣关闭快速,水锤压力小;
4. 水平管道或垂直管道均可使用,安装方便;
5. 流道通畅、流体阻力小;
6. 动作灵敏、密封性能好;
7. 阀瓣行程短、关阀冲击力小;
8. 整体结构、简单紧凑、造型美观;
9. 使用寿命长、可靠性高。

H46对夹双瓣旋启式止回阀标准规范:
设计制造标准:JB/T 8937 
结构长度标准:GB/T 12221-2005
连接法兰标准:GB/T 9113
压力温度等级:GB/T 12224-2005
试验检验标准:GB/T 13927-2008

结构形式H76型对夹双瓣旋启式止回阀H44型法兰单瓣旋启式止回阀
水锤压力水锤压力小,阀瓣行程短、并有弹簧辅助关闭、关阀速度快水锤压力很大,阀瓣行程长,需要较长的关闭时间
H76型的水锤压力只有H44型的1/2~1/5
尺寸和重量结构长度很短、体积小、重量轻,便于阀门的安装、搬运、存放及管道的布置,并能大量节约材料、降低成本结构长度很长,体积笨大,重量很重
H76型的结构长度只有H44型的1/4~1/6,H76型的重量只有H44型的1/4~1/10
流体阻力流体阻力小,流体阻力系数ζ为2.6~0.7,随着阀门口径的增大,流体阻力系数减小流体阻力小,流体阻力系数ζ为1.3~3,但在低压工况下,阀瓣不能完全开启,流体阻力大。流体阻力随着阀门口径的增大而增大
安装可水平安装或垂直安装,重量轻,不必为阀门设置支座可水平安装或垂直安装,大口径阀门重量重,需设置支座
开启压力开启压力很小,阀瓣在很小的压差下就能完全打开开启压力较大,阀瓣在较大的压差下才能完全打开
可靠性阀门为整体结构,简单紧凑、阀门关闭时冲击力小,水锤压力小,阀门寿命长,可靠性高阀门关闭时的巨大冲击力及水锤压力容易损坏阀门

H46对夹双瓣旋启式止回阀技术参数:

公称通径阀门全开启
时的流体阻
力系数ξ
常温下阀门全开启时的水流量系数流体的流向
DNNPSKv(m3/h)Cv(U.S)Cv(U.K)
开启压力近似值KPa
5022.663746221
6521/22.410912810721
8032.317220116921
10042.028933828321
12551.847655746621
15061.575087873521
20081.314321675140321
250101.223302726228321
300121.036764301360221
350140.952746171516921
400160.873068548716031
450180.8924610818906131
500200.811415133561118731
600240.717573205601722231
700280.723919279852344141
750300.727458321262690941
800320.731241365523061641
900360.739539462613874841
1000400.748814571124783841
1050420.753817629665274141
1200480.770292822426888641

H46对夹双瓣旋启式止回阀主要连接尺寸

公称通径PN1.0PN1.6PN2.5PN4.0PN6.4PN10.0
LDLDLDLDLDLD
DN50601096010960109601096011560122
DN65671296712967129671296714067147
DN80731447314473144731447615073157
DN100731647316473170731707917779183
DN12586194861948619786197105213105220
DN15098220982209822798227136250136260
DN200127275127275127287127293165313165324
DN250146330146332146343146355213364213394
DN300181380181387181403184450229424229458
DN350184440184447184460222478----
DN400191492191498191518232549----
DN450203542203558203568------
DN500219597219620219624------
DN600222698222734222734------

 

公称通径150Lb300Lb600Lb
LDLDLD
2601036011060110
21/2671226712967129
3731357314873148
4731737318079192
58619686215105240
69822298250136265
8127279127307165319
10146339146361213399
12181409181422229456
14184450222485--
16191514232539--
18203549----
20219606----
24222717----


H46-1.0-DN50,H46-1.0-DN65,H46-1.0-DN80,H46-1.0-DN100,H46-1.0-DN125,H46-1.0-DN150,H46-1.0-DN200,H46-1.0-DN250,H46-1.0-DN300,H46-1.0-DN350,H46-1.0-DN400,H46-1.0-DN450,H46-1.0-DN500,H46-1.0-DN600, H46-1.6-DN50,H46-1.6-DN65,H46-1.6-DN80,H46-1.6-DN100,H46-1.6-DN125,H46-1.6-DN150,H46-1.6-DN200,H46-1.6-DN250,H46-1.6-DN300,H46-1.6-DN350, H46-1.6-DN400,H46-1.6-DN450,H46-1.6-DN500,H46-1.6-DN600,H46-2.5-DN50,H46-2.5-DN65,H46-2.5-DN80,H46-2.5-DN100,H46-2.5-DN125,H46-2.5-DN150, H46-2.5-DN200,H46-2.5-DN250,H46-2.5-DN300,H46-2.5-DN350,H46-2.5-DN400,H46-2.5-DN450,H46-2.5-DN500,H46-2.5-DN600,H46-4.0-DN50,H46-4.0-DN65, H46-4.0-DN80,H46-4.0-DN100,H46-4.0-DN125,H46-4.0-DN150,H46-4.0-DN200,H46-4.0-DN250,H46-4.0-DN300,H46-4.0-DN350,H46-4.0-DN400,H46-6.4-DN50, H46-6.4-DN65,H46-6.4-DN80,H46-6.4-DN100,H46-6.4-DN125,H46-6.4-DN150,H46-6.4-DN200,H46-6.4-DN250,H46-6.4-DN300,H46-10.0-DN50,H46-10.0-DN65, H46-10.0-DN80,H46-10.0-DN100,H46-10.0-DN125,H46-10.0-DN150,H46-10.0-DN200,H46-10.0-DN250,H46-10.0-DN300,对夹双瓣旋启式止回阀

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