NKJ41H Vacuum isolation shut-off valveDetailed product description：

NKJ41H vacuum isolation shut-off valve

Product model: PN4.0~10.0MPa DN10~150mm

Product reference standards:

Design and Manufacturing: JB/T3595
Structural length: GB/T15188.1
Pressure and temperature rating: GB/T3595
Testing and Inspection: GB13927 JB/T9092

Product Usage

Vacuum isolation globe valve is suitable for cutting off or connecting the medium in the return water condensation system pipeline of thermal power plants with nominal pressure PN4.0-10.0Mpa and working temperature ≤ 200 ℃. Applicable media include water, steam, etc.

Product Structure Features:

1. The product is designed and manufactured according to JB/T3595 standard, meeting the requirements for supporting the use of power station equipment.
2. A vacuum sealed structure packing chamber has been designed to ensure reliable vacuum isolation.
3. The valve stem has undergone quenching and surface nitriding treatment, providing excellent corrosion resistance, abrasion resistance, and wear resistance.
4. The flange gasket is made of composite material, with a large expansion coefficient and good air tightness performance, ensuring reliable isolation between the system and the atmosphere.
5. The reverse seal is made by connecting the sealing seat with stainless steel threads or welding austenitic stainless steel on the body, ensuring reliable reverse sealing. Packing replacement and maintenance can be carried out without stopping the machine, which is convenient, fast and does not affect the operation of the system.

Material description of the main components of NKJ41H vacuum isolation globe valve:

Valve body	25 WCB	Cr5Mo
Valve Cover	25 WCB	Cr5Mo
Bracket	25 WCB	Cr5Mo
Valve disc	2Cr13、WCB	Cr5Mo
Valve stem	2Cr13	38CrMoAL、25Cr2MoV
Valve seat	25, 304	three hundred and four
sealing ring	Expanded flexible graphite
Packing material	Expanded flexible graphite
stem nut	ZCuA110Fe3

NKJ41H vacuum isolation shut-off valve