QQ41M — высокотемпературный шаровой кран с металлическим седлом
QQ41M high-temperature metal-seated ball valve is designed for abrasive, erosive and high-temperature industrial media. With tungsten carbide or nickel-based nano-powder surface treatment, the ball hardness can exceed 60 HRC. The valve is available in floating-ball and fixed-ball designs with hard alloy seats, flexible graphite packing and metal hard sealing.
Описание
QQ41M — высокотемпературный шаровой кран с металлическим седлом
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.
Основные особенности
- 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.
Технические характеристики
| Пункт | Технические характеристики |
|---|---|
| Модель | QQ41M |
| Тип продукта | 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 | Гибкий графит |
| Body Gasket | Stainless steel and flexible graphite spiral-wound gasket |
| Соответствующая услуга | High-temperature, abrasive and erosive industrial media |
Floating-Ball and Fixed-Ball Designs
| Дизайн | 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. |
Типичные области применения
- High-temperature process pipelines
- Системы выработки электроэнергии
- Petroleum and petrochemical plants
- Металлургические заводы
- Системы химической обработки
- 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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