The vacuum stop valve is suitable for the medium of the firepower station backwater condensing system piping with nominal pressure PN4.0～10.0Mpa and working temperature≤200°C, cut off or connected. Suitable media: water, steam and so on.
Structural features:
The vacuum stop valve is designed and manufactured according to JB/T3595 standard, which meets the requirements for supporting the use of power station equipment.
A vacuum sealed packing chamber was designed to isolate vacuum reliably.
The valve stem is tempered and nitrided on the surface and has good corrosion resistance, scratch resistance and wear resistance.
Flange gaskets are made of composite materials, which have a large expansion coefficient and good airtight properties, ensuring reliable isolation of the system from the atmosphere.
The back seal is made of stainless steel threaded connection seat or body austenitic stainless steel, reliable sealing. Filler replacement and maintenance can be performed without stopping the machine. It is convenient and quick to not affect the system operation.
use:
The main body of the vacuum isolation shut-off valve adopts a cast-forging structure, and has a parallel double-sealed pair and a half-forced two-way seal, and the sealing surface in-position movement and the wedge-shaped wedge wedge movement are step-by-step action to realize zero leakage.
The friction coefficient between the sealing surfaces is small and the opening and closing are convenient. Moreover, the wear of the sealing surface has an automatic compensation function.
The structure is simple, compact, easy to repair and long service life.
The bonnet filling chamber is provided with a vacuum sealing mechanism, which has a self-expanding deposit tightly, and each connecting surface is sealed with a high-strength expanding material to isolate the system from the atmosphere and has a good vacuum sealing performance.
Vacuum stop valve connection is divided into two types: flange connection and welding connection. The drive mode is manual and electric.
Vacuum stop valve is suitable for operating temperature ≤ 425 °C and ≤ 550 °C, working medium for water, air, steam pipeline, as a starting and closing device. It is especially suitable for steam turbine condensing and vacuum negative pressure systems in thermal power plants and functions as a vacuum sealer.
Structural features:
The vacuum stop valve is designed and manufactured according to JB/T3595 standard, which meets the requirements for supporting the use of power station equipment.
A vacuum sealed packing chamber was designed to isolate vacuum reliably.
The valve stem is tempered and nitrided on the surface and has good corrosion resistance, scratch resistance and wear resistance.
Flange gaskets are made of composite materials, which have a large expansion coefficient and good airtight properties, ensuring reliable isolation of the system from the atmosphere.
The back seal is made of stainless steel threaded connection seat or body austenitic stainless steel, reliable sealing. Filler replacement and maintenance can be performed without stopping the machine. It is convenient and quick to not affect the system operation.
use:
The main body of the vacuum isolation shut-off valve adopts a cast-forging structure, and has a parallel double-sealed pair and a half-forced two-way seal, and the sealing surface in-position movement and the wedge-shaped wedge wedge movement are step-by-step action to realize zero leakage.
The friction coefficient between the sealing surfaces is small and the opening and closing are convenient. Moreover, the wear of the sealing surface has an automatic compensation function.
The structure is simple, compact, easy to repair and long service life.
The bonnet filling chamber is provided with a vacuum sealing mechanism, which has a self-expanding deposit tightly, and each connecting surface is sealed with a high-strength expanding material to isolate the system from the atmosphere and has a good vacuum sealing performance.
Vacuum stop valve connection is divided into two types: flange connection and welding connection. The drive mode is manual and electric.
Vacuum stop valve is suitable for operating temperature ≤ 425 °C and ≤ 550 °C, working medium for water, air, steam pipeline, as a starting and closing device. It is especially suitable for steam turbine condensing and vacuum negative pressure systems in thermal power plants and functions as a vacuum sealer.
Bonded Neodymium Magnets,Curved Neodymium Magnets,Flat Neodymium Magnets,Neodymium Magnet Rod
Dongguan Zhenglong Magnet Co., Ltd , https://www.zlmagnetoelectric.com