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Zawory nożowe

  • SS316 Knife Gate Valve
    Zawór nożowy SS316
    Krótki:
    Rozmiar: 6″, 8″
    Ocena:150LB
    Przybory:
    Nadwozie ASTM A351 CF8M
    Bramka nożowa ASTM A182 F316+HCR
    Mostek i jarzmo CS
    Siedzisko PTFE
    Operator: pokrętło ręczne
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  • Lug-Type Pneumatic Knife Gate Valve
    Zawór zasuwowy nożowy pneumatyczny typu Lug
    Rozmiar i ciśnienie: Średnica nominalna: 14" (DN 350)
    Nominalne ciśnienie: JIS 5K (7 kgf/cm² @ 120°C)
    Materiał korpusu: stal węglowa ASTM A216 WCB
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  • Pneumatic Actuated Wafer-Type Knife Gate Valve
    Zawór nożowy typu waflowego z napędem pneumatycznym
    Rozmiar i ciśnienie • Średnica nominalna: 14" (DN 350)
    Nominalne ciśnienie: JIS 5K (7 kgf/cm² @ 120°C)
    Materiał korpusu: stal węglowa ASTM A216 WCB
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  • 316 Stainless Steel Full Lug Knife Gate Valve
    Zawór zasuwowy nożowy z pełnym otworem ze stali nierdzewnej 316
    • Rozmiar: 8 cali
    • Nominalne ciśnienie: 150 funtów
    • Materiał korpusu: CF8M (odpowiednik odlewu ze stali nierdzewnej 316)
    • Kluczowe materiały składowe:
    o Tarcza bramowa: stal nierdzewna 316 + HCR (powierzchnia chromowana na twardo lub utwardzana)
    o Trzonek: stal nierdzewna 316
    o Siedzisko: PTFE (politetrafluoroetylen)
    • Obsługa: Obsługa za pomocą pokrętła
    • Połączenie końcowe: pełne z kołnierzem
    • Kierunek przepływu: jednokierunkowy
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A knife gate valve is a specialized type of gate valve designed to handle thick fluids, slurries, and materials with suspended solids. It features a sharp-edged blade or "knife" that can cut through dense media to open or close the flow path. When the valve is operated, the gate moves vertically down into the flow path to stop flow, or up to allow full passage. This valve is particularly effective in industries like wastewater treatment, pulp and paper, mining, and chemical processing, where traditional valves may clog or struggle with semi-solid materials. Unlike standard gate valves, knife gate valves provide a tight seal even in abrasive or sticky applications. They are generally used in low-pressure, low-velocity systems and are available in manual, pneumatic, or electric actuation options. Their compact design and minimal flow resistance make them easy to maintain and ideal for space-constrained installations. The knife gate valve's ability to cleanly shear through thick media without leakage or blockages makes it a critical component in many heavy-duty and industrial systems.

What Are The Key Benefits Of Knife Gate Valves?

Knife gate valves offer unique benefits tailored for demanding industrial environments. Their standout advantage is the ability to cut through thick, viscous, or solid-laden fluids that would otherwise clog standard valves. The thin, sharpened gate slices through slurry, pulp, or granules, making them ideal for wastewater, mining, food processing, and similar applications. They are also cost-effective for large pipe diameters, where alternative valve types can be expensive. Knife gate valves provide excellent shut-off capability with minimal pressure drop when fully open, which enhances efficiency and prevents energy loss. Their simple design translates into fewer components and lower maintenance needs, especially in systems with abrasive or corrosive materials. Furthermore, knife gate valves are available in a wide range of body and seat materials, allowing customization based on media type and system conditions. Their ease of installation and compatibility with manual, pneumatic, or electric actuators make them flexible for both new builds and retrofits. Overall, knife gate valves combine performance, simplicity, and durability for challenging fluid handling tasks.

Knife Gate Valves FAQ

  • 1.What does a knife gate valve do?

    It cuts through thick fluids or slurries to control flow.

  • 2.Can knife gate valves handle solids?

    Yes, they are ideal for media with high solid content.

  • 3.Are knife gate valves good for high pressure?

    No, they are best for low-pressure applications.

  • 4.Can knife gate valves be automated?

    Yes, they support manual, pneumatic, or electric actuators.

  • 5.What industries use knife gate valves?

    Used in mining, wastewater, paper, and food processing.

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