对夹式蝶式止回阀
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  • 对夹式蝶式止回阀

对夹式蝶式止回阀

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  • Commodity name: 对夹式蝶式止回阀
  • Commodity ID: 1048151088479166464
止回阀的启闭件靠介质流动和力量自行开启或关闭,以防止介质倒流。止回阀一般分为升降式、旋启式、蝶式及卧式等四种类型,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,旋启式止回阀安装位置不受限制,通常安装于水平管路,但也可以安装于垂直管路或倾料管路上。
  • Product Description
  • 一 H77X的概况

    止回阀的启闭件靠介质流动和力量自行开启或关闭,以防止介质倒流。止回阀一般分为升降式、旋启式、蝶式及卧式等四种类型,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,旋启式止回阀安装位置不受限制,通常安装于水平管路,但也可以安装于垂直管路或倾料管路上。注意:止回阀只允许介质向一个方向流动,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。
        H76X,H77X对夹蝶型止回阀又称蝶式止回阀,由阀体、阀瓣、阀杆及弹簧等零件组成,蝶式止回阀采用对夹式,蝶板为两个半圆,且采用弹簧强制复位,密封面可为本体堆焊耐磨材料或衬橡胶,使用范围广,密封可靠。

    二  H77X对夹蝶型止回阀性能特点:


      结构长度短,体积小、重量轻,阀瓣关闭快速,水锤压力小,水平管道或垂直管道均可使用,安装方便。

    三  H77X对夹蝶型止回阀技术参数:

    公称通径

    DN(mm)

    DN50~DN1200

    公称压力

    PN(MPa)

    1.0MPa

    1.6MPa

    2.5MPa

    4.0MPa

    试验压力

    强度试验

    1.5MPa

    2.4MPa

    3.75MPa

    6.0MPa

    密封试验

    1.1MPa

    1.76MPa

    2.75MPa

    4.4MPa

    适用介质

    水、蒸汽、油品、污水、酸碱类

    适用温度

    橡胶密封面(X)-20℃~120℃
    合金钢密封面(H)主体碳钢-29℃~425℃
    不锈钢主体用于酸类介质-29℃~200℃

     

     

    四 H77X对夹蝶型止回阀部件材质:

     

     

    阀体

    铸铁、铸钢、不锈钢、铬镍钼钛钢

    阀板

    铸铁、铸钢、不锈钢、铬镍钼钛钢

    阀杆

    碳钢、2Cr13、不锈钢、铬镍钼钛钢

    密封圈

    橡胶、不锈钢、合金钢

    弹簧

    60Si2Mn、3Cr13、17-7PH、INCONEL

     

     

    五 H77X对夹蝶型止回阀外形尺寸:

    DN

    50

    65

    80

    100

    125

    150

    200

    250

    300

    350

    400

    450

    500

    600

    L

    PN1.6

    60

    67

    73

    73

    83

    98

    127

    146

    181

    184

    198

    203

    219

    222

    PN4.0

    60

    67

    73

    73

    83

    98

    127

    146

    181

    222

    231

     

     

     

    D

    PN1.0

    107

    127

    142

    162

    192

    218

    273

    328

    378

    438

    489

    539

    594

    695

    PN1.6

    107

    127

    142

    162

    192

    218

    273

    328

    378

    444

    495

    555

    617

    734

    PN2.5

    107

    127

    142

    168

    194

    224

    284

    340

    400

    458

    514

     

     

     

    PN4.0

    107

    127

    142

    168

    194

    224

    290

    352

    417

    474

    546

     

     

     

     

     
     

Company Profile

Our products are mainly exported to Asia, Europe, South America, the Middle East and Southeast Asia and other regions. We are committed to every detail of production, from raw materials to production technology, design, processing and testing are strictly controlled, in order to ensure the excellent quality of products. We adhere to the quality first, reputation first, adhering to the concept of all customer service, actively advocate corporate culture, with excellent quality and comprehensive service to win customers. We sincerely welcome new and old customers at home and abroad to visit, guidance, work together, joint efforts, win win.

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