Vacuum isolated gate valve of power plant valves

• Post Date:

  Nov 26,2016

• Expiry Date:

  May 25,2017

• Detailed Description:

  Price:200 USD FCL
  Payment Method: T/T
  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 have zero lead age 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 & close device for the pipelines under the working temperature Less 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
  

• Company:

  zhejiang hisun automation instrument co.,ltd     [ China ]        

• Contact:

  pagan peng

• Tel:

  86-577-57789961

• Fax:

  86-577-67985602

• Email:

  hisun@goolevalve.com