好施简介 | 美国洁具 | 美国热水器 | 美国阀门 | 美国泵 | 产品知识
总部网站
商务问答
联系方式
服务是我们的天职  Service Is Our Business
福建省厦门市建设大厦2509单元  邮编:361001  电话:592-2121956  传真:592-2122287  E-mail: 666@h6688.com
首页Home美国热塑性塑料阀门及附件 Thermoplastic Valves & Accessories>正文Text
下一页Next
第100页
Page 100
蝶式止回阀(3)
BUTTERFLY CHECK VALVES (3)

美国斯毕尔公司
     

 

流量系数值
Cv Values


No
部件
Component
数量
Qty
材质
Material
1 阀体
Body
1 PVC/CPVC
2 阀瓣
Flapper
2 PVC/CPVC
3 弹性密封衬垫
Flex Seal Gasket
1 EPDM/Viton®
4 阀瓣盖
Flapper Cover
2 PVC/CPVC
5 阀瓣螺丝
Flapper Screws
6 PVC/CPVC
6 铰柱螺丝
Hinge Post Screws
3 PVC/CPVC
7 铰柱条板
Post Strip
1 PVC/CPVC
8 铰柱螺栓
Post Bolt
3 PVC/CPVC
9 O形环
O-ring
2 EPDM/Viton®
10 铰柱
Hinge Post
1 PVC/CPVC
 
 
尺寸
Dimensions
通径
Size
套管(平端口)阀门,
卡箍阀门和螺纹阀门
Spigot (Plain End) Valve, Grooved
End Valve & Threaded Valve
法兰
Flanged
对夹
Wafer
压力等级
Pressure
Rating (psi)
A B A B A B
DN50
2
53/4 29/16 69/16 6 13/4 4 150
DN65
21/2
53/4 33/32 623/32 7 23/8 43/4 150
DN80
3
53/4 41/32 613/16 71/2 23/4 51/4 150
DN100
4
63/4 413/16 77/8 9 35/8 65/8 150
DN150
6
101/2 79/32 1125/32 11 41/4 85/8 150
DN200
8
14 107/32 153/8 131/2 6 11 150
DN250
10
16 1131/32 175/8 16 10 131/4 100
DN300
12
16 141/32 171/2 19 12 16 100
DN350
14
19 143/4 19 21 13 175/8 100
DN400
16
193/4 1617/32 221/8 231/2 131/2 201/8 100
DN450
18
261/2 1931/32 287/8 25 151/2 211/2 50
DN500
20
287/8 2125/32 383/8 271/2 17 233/4 50
DN600
24
297/8 2521/32 447/8 32 19 281/8 50

  作为一般指南而言,水平安装阀门的开启和关闭压力范围从0.2到0.5 psi。阀门通径越大,开启阀门需求压力就越小。如果阀门安装在垂直向上的应用场合,则开启所需的压力会略有增加。
  As a general guideline, Opening & Closing Pressures will range from 0.2 to 0.5 psi for horizontal applications. Opening pressure tends to decrease in larger size valves. Valves installed in vertical up-flow applications will require slightly higher pressures.

一般安装信息
General Installation Information

  正常系统湍流可能会影响到蝶式止回阀的阀座。阀门应该安装在距离任何管件至少5倍管道直径远的地方。如果用作底阀,则不要安装在靠近罐底部的地方。蝶式止回阀不能用于连续循环流动的应用场合,如循环泵。否则可能导致密封膜过早破坏。如果是水平安装,则要始终保持铰柱螺栓朝向处于阀体外可观察的垂直位置(顶部和底部),并与流体流向相互垂直。如果垂直安装在某个弯管的下游位置,则弯管外径的流速可能会比较高。为了避免蝶式阀板负载不均衡,铰柱螺栓应该与弯管外径和交叉部对齐,不要从弯管的一侧穿到另一侧。
  Butterfly Check Valve seating may be affected by normal system turbulence. Valves should be installed at least 5 pipe diameters away from any fitting. If used as a foot valve, do not place near bottom of a tank. Butterfly type check valves should not be used in continuous cycling applications, such as with reciprocating pumps. This can result in premature failure of sealing membrane. In horizontal installations, always orient the Hinge Post Bolts visible on the external body in a vertical (top and bottom) position, perpendicular to flow. In vertical installations downstream from an elbow, flow velocities can be higher on the outer radius of the elbow. To avoid uneven butterfly plate loading, the Hinge Post Bolts should align with crotch and outer radius of elbow and NOT from side to side of the elbow.

注:
Notes:
  法兰阀门设计用于安装在两个符合美国国家标准协会ANSI Class 125/150螺栓模式标准的法兰之间。用户需自备3.2毫米厚全密封面衬垫,螺栓,螺母和法兰垫圈。外螺纹连接端口是标准NPT美国标准锥管螺纹。卡箍连接端口与机械连接件一起用于热塑性塑料管道。
  Flanged valves are designed for mounting between two (2) ANSI Class 125/150 bolt pattern flanges user supplied 1/8" full-faced gaskets, bolts, nuts and flat washers. Male thread ends are standard NPT tapered. Grooved ends are for use with mechanical coupler designed for thermoplastic pipe.
首页Home美国热塑性塑料阀门及附件 Thermoplastic Valves & Accessories>正文Text
下一页Next