QQ41M Hochtemperatur-Kugelhahn mit Metallsitz
Das Hochtemperatur-Kugelventil QQ41M mit Metallsitz ist für abrasive, erosive und hochtemperaturhaltige industrielle Medien ausgelegt. Durch eine Oberflächenbehandlung mit Wolframkarbid oder Nanopulver auf Nickelbasis kann die Härte der Kugel 60 HRC übersteigen. Das Ventil ist in Ausführungen mit schwimmender und feststehender Kugel erhältlich, mit Sitzen aus Hartlegierung, flexibler Graphitdichtung und metallharter Abdichtung.
Beschreibung
QQ41M Hochtemperatur-Kugelhahn mit Metallsitz
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.
Hauptmerkmale
- 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.
Technical Specifications
| Artikel | Specification |
|---|---|
| Modell | QQ41M |
| Produkttyp | 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 | Flexible graphite |
| 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
| Design | 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. |
Typische Anwendungsbereiche
- High-temperature process pipelines
- Power generation systems
- Petroleum and petrochemical plants
- Metallurgical plants
- Chemische Verarbeitungsanlagen
- 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.
Rezensionen
Es gibt noch keine Rezensionen.