Product Code : VF--ZCC-Z138-CU
Product Name: Vacuum Gate Valve
Product models: NK44H, NK64H
Nominal diameter: DN50 - DN800
Structural form: Gate plate type
Nominal pressure: 1.6Mpa to 10.0Mpa
Connection methods: Flange, welding
Applicable temperature: -20 ° C to +150 ° C to 425 ° C to 550 ° C
Drive mode: manual, bevel gear, electric, pneumatic, hydraulic
Valve body material: WCB, cast steel, carbon steel, stainless steel, chromium-molybdenum steel
Manufacturing standards: National standard GB, German DIN, American API, ANSI
Applicable media: water, oil, steam, air
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The connection forms of NK44H and NK64H vacuum gate valves are divided into flange and welding, and the driving methods are manual and electric. This valve is suitable for pipelines with working temperatures ≤425℃ and ≤550℃, and the working medium is water, steam or air, serving as an opening and closing device. It is especially suitable for the condensing and vacuum negative pressure systems of steam turbines in thermal power plants, playing a role in vacuum isolation and sealing.
Structural characteristics
A vacuum-sealed structure packing chamber was designed to isolate the system from the atmosphere, featuring excellent environmental protection performance.
2. The materials are carefully selected, meeting relevant national and international standards, and the overall quality of the materials is high.
3. The sealing pair is advanced and reasonable in matching, which improves the sealing performance and extends the service life.
4. The opening and closing parts adopt parallel gate plates with bidirectional elastic sealing, featuring low friction, easy opening and closing, convenient maintenance, reliable sealing and excellent performance.
5. The valve stem has undergone quenching and tempering as well as surface nitriding treatment, which endows it with excellent corrosion resistance, scratch resistance and wear resistance.
6. The flange gasket is made of composite materials, featuring a large expansion coefficient, excellent air tightness, and reliable isolation of the system from the atmosphere.
The connection forms of NK44H and NK64H vacuum gate valves are divided into flange and welding, and the driving methods are manual and electric. This valve is suitable for pipelines with working temperatures ≤425℃ and ≤550℃, and the working medium is water, steam or air, serving as an opening and closing device. It is especially suitable for the condensing and vacuum negative pressure systems of steam turbines in thermal power plants, playing a role in vacuum isolation and sealing.
Packing of Standard Packing:
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition
