不锈钢法兰空气专用截止阀J41W-16P

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三、关于物流：由于运输方式不用，具体物流方式和费用由买卖双方协商决定。

304不锈钢法兰截止阀J41W-16P产品展示

采购者注意：此款产品有朋友在外面厂家买了一个便宜不锈钢截止阀，用了3个月后泄漏腐蚀，*后来问双特怎么办？我看了腐蚀的程度，发现原来是厂家由于价格降低，因此在填料里把石墨改成了四氟，油300多度，四氟*多120多度，因此受不了就腐蚀了，*后还是从双特这里买了不锈钢截止阀回去换，用了之后再没有出现问题。

304不锈钢法兰截止阀J41W-16P结构图

 304不锈钢法兰截止阀J41W-16P主要规范标准

采用标准

设计制造：铸钢截止阀按照BS 1873、ASME B16.34;

◎锻钢截止阀按照API602

◎检验和试验：API 598

◎ 法兰连接：ASME B16.5

◎对焊端：ASME B16.25

◎承插焊端：ASME B16.11

◎结构长度：ASME B16.10

◎温压等级：ASME B16.34

Standards

Design and Manufacture：Cast steel globe valve to BS 1873

   And ASME B16.34

◎Forged steel globe valve to API 602

◎Inspection and Test：API 598

◎End flange dimension：ASME B16.5

◎BW end dimension：ASMEB16.25

◎Socket-weld dimension：ASME B16.11

◎Face to face and end to end:ASME B16.10

◎Pressure-temperature ratings：ASME B16.34

阀盖垫片形式

 ◎ Class150~Class300截止阀采用不锈钢石墨缠绕垫片；Class600截止阀可用不锈钢石墨缠绕垫片也可采用金属环垫片；Class900截止阀可采用金属环垫片；   Class900闸阀可采用金属环垫片 Class1500~Class2500截止阀采用自压密封金属环。

Gasket of cover flange

◎Stainless steel+flexible graphite wounded gasket is used for class150 and class300 globe valve Stainless steel flexible graphite wounded gasket is used for class600，and ring joint gasket is also optional for class600。Ring joint gasket is used for class900 globe valve. pressurized seal design is used for class1500~class2500 globe valve

截止阀结构特点

    ◎栓接阀盖，明杆支架和升降式阀杆金属密封面

■The Features of Globe Valve

◎Bolted bonnet；Outside screw and yoke；Rising stems；Metallic seating surfaces.

■阀杆设计

◎采用整体锻造工艺制成，按照标准要求确定*小直径。

■Stem Design

◎The stem is of integral design. The minimum diameter of the stem shall per the standard requirement.

操作形式

       ◎一般情况下采用手轮、冲击手轮或者齿轮传动方式，可根据用户需要采用链轮传动或者电装驱动。

Actuation

Hand wheel impact hand wheel gear box is usually used for globe valve actuation Chain wheel and electric actuator can be also sedfor globe valve actuation if being by the customers。

阀体和阀盖连接形式

Class150-class900采用栓接阀盖； class1500-class2500采用自压密封式阀盖。

Body and Bonnet Connection  The body and bonnet of class150-class900 check  valve are usually with studs and nuts。

the body and bonnet of class1500-class2500 check  valves are usually of pressurized seal design

填料密封

通常采用成型柔性石墨作为填料材料，可根据用户需求提供PTFE或者复合填料材料。填料与填料函接的表面粗糙度为3.2μm，可以保证阀杆与填料接触面接合紧密但是旋转自如，经过精密的机械加工的阀杆密封面粗糙度0.8μm可以保证阀杆可靠的密封。

Packing Seal

Molded flexible graphite is used for packing material.PTFE or combined packing material can be also used if being requested by the customer the internal surface of the stuffing box.Of which area is contacted with the packing.Is of excellent finish（Ra3.2μm）the stem surface，contacting with the packing should be rolled and pressed after being precisely machined，so as to reach to the high finish and com-pertness（Ra0.8μm）and ensure the reliable tightness of the stem area.

弹簧加载填料冲击系统

如果客户要求，可采用弹簧加载填料冲击系统提高填料密封的持久性和可靠性。

Belleville Spring Loaded Packing Impacting System

If being requested by the customer，the Belleville spring loaded packing impacting can be adopted for enhancing the durability and reliability of the packing seal.

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