Air Less Gate Valve
Brief introduction of vacuum item gate valve
There are two types of vacuum type gate valve connection: flange and welding, and there are two driving methods: manual and electric. The valve is suitable for pipelines whose working temperature is ≤425℃, and the working medium is water, steam or air, as an opening and closing device; it is especially suitable for steam turbine condensation and vacuum negative pressure systems in thermal power plants, and plays a role of vacuum isolation and sealing.
1. Designed a vacuum-sealed packing chamber to isolate the system from the atmosphere and have good environmental performance.
2. Exquisite selection of materials, in compliance with relevant domestic and foreign standards, and high overall quality of materials.
3. The sealing pair is advanced and reasonable, which improves the sealing performance and has a long service life.
4. The opening and closing parts adopt two-way elastic sealing of parallel rams, with low friction, easy opening and closing, convenient maintenance, reliable sealing and excellent performance.
5. After quenching and tempering and surface nitriding treatment, the valve stem has good corrosion resistance, scratch resistance and wear resistance.
6. Flange gaskets are made of composite materials, with large expansion coefficient, good airtightness, and reliable isolation of the system from the atmosphere.
Product specification of airtight gate valveProduct diameter: DN50 ~ DN800
Material: cast steel, stainless steel, alloy steel, etc
Applicable service: water, steam, air
|Nominal pressure||Shell strength test||Back seal test||Seal test|
Material Table of API wedge constructed gate valve
|Partname||Body, Bonnet||Stem||Wedge gate||Sealing face||Parking||Fastener|
|Material||WCB||2Crl3||25||H：alloysteel||Expanding graphite||carbon steel|
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