Van bi có đệm kim loại chịu nhiệt cao QQ41M
Van bi có đế kim loại chịu nhiệt QQ41M được thiết kế để sử dụng với các môi trường công nghiệp có tính mài mòn, ăn mòn và nhiệt độ cao. Nhờ xử lý bề mặt bằng bột nano cacbua vonfram hoặc hợp kim niken, độ cứng của bi có thể vượt quá 60 HRC. Van có sẵn trong các kiểu thiết kế bi nổi và bi cố định, đi kèm với đế van bằng hợp kim cứng, lớp đệm than chì linh hoạt và lớp làm kín bằng kim loại cứng.
Mô tả
Van bi có đệm kim loại chịu nhiệt cao QQ41M
The QQ41M high-temperature metal-seated ball valve is designed for abrasive,
high-temperature and erosive industrial media. The ball surface can be treated
with supersonic tungsten carbide spraying or carbonyl-process thermal spraying
with nickel-based nano powder. This treatment can increase the surface hardness
of the ball to above 60 HRC.
The valve seat is manufactured from hard materials or hard alloy overlay. This
enables the valve to withstand wear, particle erosion and high-velocity media
during opening and closing. Flexible graphite packing and stainless steel
flexible graphite spiral-wound gaskets allow the valve to operate reliably under
high-temperature conditions.
Metal-seated ball valves are commonly used where soft-seated valves cannot meet
the requirements for temperature, abrasion or media erosion. The QQ41M series
can be supplied in floating-ball or trunnion-mounted fixed-ball configurations
according to the pressure, size and operating conditions.
Main Features
- Designed for high-temperature industrial service.
- Metal-to-metal sealing structure for demanding applications.
- Optional floating-ball or fixed-ball construction.
- Ball surface hardness can reach above 60 HRC after surface treatment.
- Optional supersonic tungsten carbide coating.
- Optional nickel-based nano-powder thermal spray coating.
- Hard material or hard alloy overlay seat construction.
- Excellent resistance to wear, erosion and media impact.
- Flexible graphite packing for high-temperature stem sealing.
- Stainless steel and flexible graphite spiral-wound gasket.
- Suitable for abrasive, erosive and high-temperature media.
Thông số kỹ thuật
| Mặt hàng | Specification |
|---|---|
| Model | QQ41M |
| Loại sản phẩm | High-temperature metal-seated ball valve |
| Ball Construction | Floating ball or fixed trunnion-mounted ball |
| Seat Type | Metal hard seat with hard material or hard alloy overlay |
| Ball Surface Treatment | Tungsten carbide coating or nickel-based nano-powder thermal spray coating |
| Ball Surface Hardness | Above 60 HRC after surface treatment |
| Stem Packing | Graphite dẻo |
| Body Gasket | Stainless steel and flexible graphite spiral-wound gasket |
| Applicable Service | High-temperature, abrasive and erosive industrial media |
Floating-Ball and Fixed-Ball Designs
| Thiết kế | Typical Characteristics |
|---|---|
| Floating Ball | Suitable for common high-temperature and abrasive applications. The ball is supported by the seats and moves slightly under pressure to maintain sealing. |
| Fixed Ball | Suitable for larger sizes, higher pressure and demanding operating conditions. The trunnion-mounted ball reduces operating torque and improves stability. |
Các ứng dụng điển hình
- High-temperature process pipelines
- Power generation systems
- Petroleum and petrochemical plants
- Metallurgical plants
- Chemical processing systems
- Abrasive and particle-containing media
- Erosive gas and liquid pipelines
- Industrial systems requiring metal hard sealing
The final valve size, pressure rating, materials, coating thickness, seat design and temperature range are subject to the approved WDL Valve technical drawing and project datasheet.
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