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| Product Name：Vacuum isolation globe valve |
| Product Classification：Globe valve |
| Product Introduction： |
Vacuum isolation globe valve for nominal pressure PN4.0 ~ 10.0Mpa, ≤ 200 ℃ working temperature of the fire station on the return condensate system piping, cut off or connected to the media. Applicable medium: water, steam, etc. |
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| Description |
Parameters |
Size Chart |
Application |
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Product Features:
1. JB/T3595 standard products according to design and manufacture power plant equipment to meet the matching requirements.
2. design of the vacuum seal structure packing room, isolation vacuum and reliable.
3 stem after the quenching and surface nitriding, has good corrosion resistance, resistance to abrasion and wear resistance.
4 flange gasket composite materials, expansion coefficient, air tightness performance, to ensure reliable system isolated from the atmosphere.
5 sealed stainless steel threaded connection back seat or seal welding of austenitic stainless steel body is made, pour reliable sealing. Packing replacement and maintenance can be carried out in the case of non-stop, convenient and does not affect system operation.
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Description of the main parts of the material
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Valve body |
25、WCB |
Cr5Mo |
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Valve cover |
25、WCB |
Cr5Mo |
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支 架 |
25、WCB |
Cr5Mo |
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Disc |
2Cr13、WCB |
Cr5Mo |
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Stem |
2Cr13 |
38CrMoAL、25Cr2MoV |
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Valve seat |
25、304 |
304 |
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Sealing ring |
Expanded flexible graphite |
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Packing |
Expanded flexible graphite |
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Stem nut |
ZCuA110Fe3 |
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产品外形及结构尺寸示意图
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Working Principal:
globe valve, also called globe door, is the most widely used as a valve, the reason why it is popular is because the process of opening and closing the friction between the sealing surface is small, more durable, opening height is not easy to manufacture, easy maintenance, not only for low-voltage, and for high pressure.
Valve closure principle is to rely on bar valve pressure, the valve sealing surface and the valve seat sealing surface tightly, to prevent media circulation.
One-way valve can only medium flow direction when installing. Valve is greater than the gate length of the structure, and fluid resistance, long-term operation, sealing reliability is not strong.
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