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购买Vacuum isolated gate valve of power plant valves  , 价格 , 图片 Vacuum isolated gate valve of power plant valves, 从ZHEJIANG HISUN AUTOMATION INSTRUMENT CO.,LTD. 进料泵 在 Allbiz 中国
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    购买Vacuum isolated gate valve of power plant valves  , 价格 , 图片 Vacuum isolated gate valve of power plant valves, 从ZHEJIANG HISUN AUTOMATION INSTRUMENT CO.,LTD. 进料泵 在 Allbiz 中国
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    购买Vacuum isolated gate valve of power plant valves  , 价格 , 图片 Vacuum isolated gate valve of power plant valves, 从ZHEJIANG HISUN AUTOMATION INSTRUMENT CO.,LTD. 进料泵 在 Allbiz 中国
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    Vacuum isolated gate valve of power plant valves

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    购买 Vacuum isolated gate valve of power plant valves
    介绍
    生产国中国

    Product overview

    Chief structure features and usages

    1. The main body of this series valve uses a casting and forging structure and has a dual-direction seal of parallel secondary semi-forced dual-sealing and the motions of both the sealing face to its due position and the tapered block to wedge-up are separated to havezero leadage come true.
    2. The sealing face is of a small frictional force if motion,lightly opened and closed and has a self compensation function for wearing.
    3. Simple structure easy to more than 10 years of long duration.
    4. A vacuum sealing structure is set in the filling chamber on the valve cover,which has the action of self-expanding and impacting,the joint faces are sealing with the expansive material of high strength to completely isolate the system from air.
    5. Two connection ways of b flange and welding,two ways to drive of heand-and eletric-operation. The valve can be used as the open & closedevice for the pipelines under the working temperatureLess than425degree centigrade and 550 degree centigrade  and the working medium of water,steam or air;especially suitable to act as the vacuum isolating sealing for the system of steam turbine's considernation and vacuum negative pressure in steam power plants.

    Valve ctrucure type:

    Mode1 NKJ61 Vacuum isolating stop valve;Model NKZ44 and NKZ64 Vacuum isolating gate valves.

    Manufacture and acceptance standard:

    1. Manufacture,acceptance and technical conditions per GB/T12234,GB/T12235.
      2. Face-to face dimensions per GB/T12221.
      3. Flange sizes per JB/T78-79,GB/T9112-9124.

    Material for main parts

    Body,Bonnet: 25 or WCB

    Valve stem:Cr.stainless steel,25Cr2MoV

    Disc:Cr.stainless steel,12Cr1MoVA。

    Sealing face:H: alloy steel,Y: carbide alloy

    Yoke nut:Al bronze

    Packing:Expanding compound graphite

    Fastener:High-grade carbon steel,Cr.Mo steel

     

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