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首页Home＞铸钢螺栓阀帽API 600阀门 Cast Steel Bolted Bonnet API 600l Valves＞正文Text
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  闸阀备选功能
Gate Valves Optional Features
美国太平洋阀门

选择楔形闸板类型
Choice of Wedge Types

　　美国太平洋铸钢螺栓阀盖闸阀可配置全系列楔形闸板，以适应不同的应用环境。请指定最适合您的应用环境的楔形闸板类型。
　　Pacific cast steel bolted bonnet gate valves are available with a full selection of wedge types to match operating service conditions.
Specify the type best suited to your service conditions.
         

实心楔形闸板
Solid Wedge		 　　这是最常见的楔形闸板类型，也是最坚固、最简单和最经济的楔形闸板。这种楔形闸板的优点在于具有很好的耐腐蚀和抗振动的性能。缺点在于对于由于高温热膨胀导致的阀座变形，或者由于施加在阀门上的管道负载造成部件弯曲无法自行补偿，从而导致楔形闸板卡在阀座里。
　　This is the most common wedge type. It is also the strongest, simplest and most economical of the various wedge types. The advantages of this wedge are that it is highly resistant to corrosion and vibration. Disadvantages are that it is not self-compensating to seat distortion caused by high temperature thermal expansion or bending moments applied to the valve by piping loads which may cause the wedge to stick in the seats.		  

柔性楔形闸板
Flex Wedge		 　　柔性楔形闸板经过铸造和机加工，具有纵向花纹沟，使得与阀座接触面能够独立移动，并且根据阀座的移动而自行调整对准。主要用于管道负载或系统热膨胀可能会使得阀门的阀座扭曲变形的系统中。柔性楔形闸板特别有助于防止热关闭、冷开启时出现卡住的现象。这种类型的楔形闸板特别适用于蒸汽或其它高温应用场合。
　　The flex wedge is cast or machined with a circumferential groove to allow the seating faces to move independently and adjust to movement of the body seats. It is used where line loads or thermal expansion of the system is likely to distort the seat face in the valve. The flex wedge is especially useful to prevent sticking where valves are closed when hot and opened when cold. This type of wedge is ideally suited for steam or other high temperature services.
         

拼合楔形闸板
Split Wedge		 　　拼合楔形闸板将楔形闸板分成两部分，具有足够的弹性和柔性，能够适应阀座的变形，特别适用于重量轻，压力小的阀门。这种类型的楔形闸板也适用于高压煤气或腐蚀性流体的应用环境。不建议用于高速流体或含有可能淤塞闸板的悬浮颗粒的流体的应用。由于这种结构的复杂性，其价格往往比实心或伸缩结构要贵得多。
　　The split wedge provides complete flexibility between the two halves of the wedge to compensate for seat distortion, especially in light weight, low pressure valves. This style is also used for high pressure gas or corrosive services. It is not recommended for high velocity flow or services where suspended particles can foul the wedge. Because of the complexity of this design, it is generally more expensive than the solid or flex designs.		  
高度整体性
关闭楔形闸板
High Integrity
Shutoff Wedge		 　　对于要求气密性关闭的应用场合，高度整体性关闭(HIS)结构楔形闸板是最好的选择。这种防火消防结构在上游和下游阀座上具备零泄漏屏障的性能。可提供一系列阀内件和外壳材料，适用于腐蚀性应用和温度高达232oC的应用场合。
　　For services that require bubble tight shutoff, the High Integrity Shutoff (HIS) design is the best option. This fire safe design provides a zero leakage barrier on both upstream and downstream seats. A full range of trim and shell materials are available for corrosive service and temperatures up to 450oF.

 

标准阀盖连接
Standard Bonnet Joints

　　美国太平洋阀门上的阀体/阀盖连接结构适用于恶劣的应用环境，可配置足够数量的阀盖螺栓。
　　这些标准的连接随着阀门压力等级的不同而有所不同。这些标准连接如下所示。
　　Body/bonnet joints on Pacific valves are designed for rugged services with a more than adequate number of bonnet bolts.
　　The standard joint varies, depending on valve class. These standard joints are shown.

 

压力等级Class 150
Class 150

　　这种标准、平面、椭圆形阀盖连接是最简单和最经济的结构，适用于低压应用及压力等级Class 150，阀门通径DN100 - DN900，符合ANSI面对面尺寸标准的阀门。我们的标准垫圈是波纹状金属垫圈，如果用户要求，我们也可以提供其它材料的平面垫圈。DN40至DN80的阀门配置圆形外和内阀盖连接和螺旋盘绕垫圈。
　　The standard, flat, oval bonnet joint is the simplest and most economical configuration for low pressure services and is required to maintain ANSI face-to-face dimensions on Class 150 valves sizes 4"-36". Our standard gasket is corrugated metal, but flat gaskets of other materials are available when specified. 11/2" thru 3" valves are furnished with a circular male and female bonnet joint and spiral wound gasket.

  

压力等级Class 300
Class 300

　　这种圆形外和内阀盖连接之自行调整对准的，特别适用于压力等级中等的阀门。我们的标准垫圈是螺旋盘绕垫圈。对于这些压力等级的阀门，如果用户要求，我们也可提供双外套或环连接垫圈。
　　The circular male and female bonnet joint are self- aligning and well suited for intermediate pressure classes. Our standard gasket is spiral wound. Valves in these classes are also available with double jacketed or ring joint gaskets when specified.

  

压力等级Class 600 - 1500
Class 600-1500

　　这种圆形环状连接阀盖密封经过实践证明是目前最好的螺栓高压阀盖连接。这种环连接可自行调整对准；除非出现物理损坏，否则垫圈可以重复使用。如果用户要求，对于这些压力等级的阀门，我们也可以提供螺旋盘绕垫圈阀盖连接。
　　The circular ring joint bonnet seal has proven to be the best bolted high pressure bonnet joint available. The ring joint is self-aligning; the gasket may be reused unless it is physically damaged. Valves in these classes are also available with spiral wound gasket bonnet joints when specified.
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