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泵阀管件阀门疏水阀

对夹式止回阀

供应商:
北京疏水阀门厂
企业类型:
其他

产品简介

中文介绍对夹式止回阀由阀体、阀瓣、弹簧等组成,水平或垂直安装于管路系统,防止介质倒流

详细信息

中文介绍

       对夹式止回阀由阀体、阀瓣、弹簧等组成,水平或垂直安装于管路系统,防止介质倒流。

       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。


 产品结构特点:

    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.对夹升降式止回阀流道通畅、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。


The clip check valve is composed of valve body, valve disc, spring and so on. It is installed horizontally or vertically to the pipeline system to prevent the reverse flow of the medium.

Wafer type check valve for the nominal pressure of PN10 ~ PN420, Class150 ~ Class2500; the nominal diameter of DN15 ~ DN1200, NPS1/2 ~ 48; all kinds of pipeline working temperature of -196 DEG C to 540 DEG C, used to prevent the media back. By selecting different materials, the clip check valve can be applied to many kinds of media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea in petrochemical, metallurgical, power, light industry and food industries.


Product structure:

1. short length of the structure, the length of the structure is only the traditional flange check valve 1/4 ~ 1/8;

2. small, light weight, and its weight is only 1/4 to 1/20 of the traditional flange check valve;

3. valve closes fast, water hammer pressure is small;

4. horizontal pipe or vertical pipe can be used and easy to install.

The flow path of the 5. pair clip check valve is smooth and the fluid resistance is small.

6. the action is sensitive and the sealing performance is good.

The 7. valve stroke is short and the impact force of the valve is small.

8. overall structure, simple and compact, beautiful appearance;

9. long life and high reliability.


对夹式止回阀WAFER CHECK VALVES



对夹式止回阀主要零件的材料Material for the main parts of the clip check valve

零件名称

Part name

阀体阀盖、阀瓣

Valve body, valve cover, valve disc

密封面

Sealing surface

摇杆

rocker

销轴

Pin shaft

垫片

Shim

零件材料

Part material

碳钢

carbon steel

堆焊硬质合金

Hardfacing hard alloy

碳钢

carbon steel

铬不锈钢

Chromium stainless steel

柔性石墨+304

Flexible graphite+304

零件材料Part material

型号Model

阀体Valve body

阀瓣Valve clack

弹簧Spring

H71H-16Q H71H-25Q

QT400-15

25

50CrVA

H71W-25H H71W-40H

2Cr13

1Cr13

1Cr18Ni9Ti

H71W-25P H71W-40P

ZG1Cr18Ni9Ti

1Cr18Ni9Ti

1Cr18Ni9Ti

 

技术参数Technical parameter

型号Model

公称压力

Nominal pressure

(MPa)

试验压力Test pressure(MPa)

适用温度

Applicable temperature(℃)

适用介质

Applicable medium

壳体Shell

密封Seal up

H71H-16Q

1.6

2.4

1.76

≤235℃

水、蒸气、油品等

H71H-25Q

2.5

3.75

2.75

≤235℃

H71W-25H

≤300℃

H71W-25P

≤200℃

硝酸等腐蚀性介质

H71W-40H

4.0

6.0

4.4

≤300℃

H71W-40P

≤200℃

水、蒸气


主要外形尺寸Main shape size:

公称通径 DN(mm)

L

D

1.6

2.5

4.0

15

25

48

48

48

20

31.5

58

58

58

25

35.5

68

68

68

32

40

80

80

80

40

45

90

90

90

50

56

105

105

105

65

63

125

125

125

80

71

140

140

140

100

80

160

165

165

125

110

190

195

195

150

125

215

225

225

200

160

270

285

290

250

200

330

340

350

300

250

385

400

415



安装使用

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本阀门安装在水平管道上,阀盖向上。

 

Installation and use

1, the valves at both ends of the valve must be blocked, and there is a dry and ventilated room. Corrosion protection should be regularly checked for long-term storage.

2, before installation, the valve should be cleaned and the defects caused in the transportation process are eliminated.

3, the installation must carefully check the sign on the valve and whether the nameplate is in accordance with the requirements.

4. The valve is installed on the horizontal pipe and the valve cover is upwards.