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Classification：Hydropower station valve
Trade names：
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| The NK series vacuum isolates the valve |
| Type of the products: NKJ61 |
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Main performance norm:
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Type of the products
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The intensity of the shell is tested (MPa)
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Have and seal testing (MPa)
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Seal and test (MPa)
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Suitable medium
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Suitable temperature (degrees Centigrade)
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NKJ61H-40
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6.0
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4.4
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4.4
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Water, steam, air
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≤ 425
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NKJ61H-64
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9.6
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7.0
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7.0
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NKJ61H-100
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15.0
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11.0
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11.0
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NKJ61Y-401
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6.0
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4.4.
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4.4
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Water, steam, air
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≤ 425
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NKJ61-601
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9.6
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7.0
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7.0
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NKJ61Y-1001
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15.0
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11.0
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11.0
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Use of the products:
This serial valves are suitable for working temperature ≤425 degrees Centigrade and ≤ and 550 degrees Centigrade, job medium is had for the pipelines of water , air , steam, close the device as getting up. Suitable for thermal power plant vapour machine condensation and vacuum shoulder system of pigeonholing , play vacuum seal the function of isolating especially.
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Product structure characteristic:
1.Serial valve subject this is it cast structure of forging to adopt , have parallel pair seal pairs of half force two-way to seal, seal piece put sport and Tenneco pieces of wedge urgent sport function step by step in place , realize zero let out.
2.Seal little coefficient of friction under, is it close convenient to get up, and, the wearing and tearing of sealing the surface is paid for the function automatically.
3.Of simple structure, compact, overhaul it conveniently, have long performance life.
4.Valve build packing room have vacuum sealed organization , have since the bloated deposit compresses tightly function , and every connection surface is it is it expand material seal , make the system to excel in to adopt
Isolate from atmosphere, have very good vacuum sealing properties.
5.This serial valves connect the form and is divided into the flange and joined , welded and joined two kinds, the drive way is manual , electronic two kinds. |
The material of the major part is explained:
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Part name
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The valve body valve covering
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Valve stem
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Valve one
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Seal the surface
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Valve stem nut
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Packing
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Fastener
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NKJ61H-C type
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25 or WCB
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Chromium stainless steel
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Chromium stainless steel
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Alloy steel of H:
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Aluminium bronze
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Complex graphite of inflation
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High-quality carbon steel
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NKJ61Y-1 type
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Chromium molybdenum steel
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20Cr1M01VA or 38CrMoAIA
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12Cr1mo1VA
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Hard alloy of Y:
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Chromium molybdenum steel
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