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Vacuum isolated gate valve of power plant valves 购买在 渭源
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    Vacuum isolated gate valve of power plant valves 购买在 渭源
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    Vacuum isolated gate valve of power plant valves 购买在 渭源
    购买 Vacuum isolated gate valve of power plant valves
    Vacuum isolated gate valve of power plant valves

    Vacuum isolated gate valve of power plant valves

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    技术特点
    • 生产国中国
    介绍

    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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    Vacuum isolated gate valve of power plant valves
    Vacuum isolated gate valve of power plant valves
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