ゲートバルブ

  • 写真の仕様は以下のとおりです
    サイズ:2インチ
    定格:150LB
    ボディとボンネット:C95500
    ディスク: C95500 ソリッド
    ステム:モネルK500
    シート:モネルK500
    駆動方式:ホイール
  • 写真の仕様は以下のとおりです
    サイズ:DN15
    評価:PN16
    ボディとボンネット:真鍮
    ディスク:ブラス
    ステム:真鍮
    シート:真鍮
    駆動方式:ホイール
  • 写真の仕様は以下のとおりです
    サイズ:2インチ
    定格:150LB
    ボディとボンネット:B62
    ディスク: B62、ソリッド
    ステム:ASTM A182 F316
    座席: B62
    駆動方式:ホイール
  • サイズ: 3インチ (DN80)
    圧力定格:150LB(PN20)
    主な材料:
    本体/ボンネット/ディスク/ステム:ASTM B148 C95800(ニッケルアルミニウム青銅合金)
    シート:一体型メタルツーメタル
    設計と運用:
    操作: ハンドホイール
    端部接続: RFフランジ(レイズドフェイス)
  • サイズ: DN65 (2½")
    圧力定格:PN250(クラス1500)
    主な材料:
    ボディ&ボンネット:ASTM A182 F11(鍛造クロムモリブデン鋼、1¼Cr-½Mo)
    ウェッジ:ASTM A182 F11 + 13Crハードフェーシング(耐摩耗性向上)
    ステム:ASTM A182 F6a(マルテンサイト系ステンレス鋼)
    シート:ステライト6ハードフェイス(優れた耐侵食性と耐摩耗性)
    操作: ハンドホイール(手動作動)
    端部接続:ASME B16.25準拠の突合せ溶接(BW)

A gate valve is a type of valve used to completely stop or allow flow in a pipeline by raising or lowering a solid barrier (the gate) into the path of the fluid. It is primarily designed for on/off control rather than flow regulation. When the valve is fully open, the gate is entirely lifted, allowing unobstructed flow with minimal pressure drop. When closed, the gate seals tightly to stop flow entirely. Gate valves are most effective in systems where the valve remains either fully open or fully closed for extended periods. They are not ideal for throttling purposes because the partially open gate can vibrate, causing wear and potentially damaging the valve. These valves are widely used in water supply systems, oil and gas pipelines, and industrial applications due to their robust construction and ability to handle high pressures and temperatures. Common materials include cast iron, stainless steel, and brass, with options tailored to specific media and environments. Gate valves are known for their durability, tight sealing, and long service life, making them a preferred choice in many heavy-duty applications.

What Are The Advantages Of Using A Gate Valve?

Gate valves offer several advantages that make them a popular choice for a wide range of industries. One of the key benefits is their low pressure drop when fully open, which helps maintain system efficiency. Their straight-through flow design minimizes turbulence and energy loss. Gate valves also provide a reliable shutoff, which is crucial for isolating sections of piping during maintenance or emergencies. Because they are designed for full open or closed positions, gate valves reduce wear and extend service life when used properly. Their versatility in handling different types of fluids—such as water, steam, oil, and gas—adds to their appeal. In addition, gate valves are available in various sizes and materials, which makes them suitable for everything from household plumbing to large-scale industrial systems. They can be installed in both horizontal and vertical orientations, offering flexibility in system design. With proper installation and minimal maintenance, gate valves deliver long-term, dependable performance even in demanding environments.

Gate Valves FAQ

  • 1.What is a gate valve used for?

    It’s used to start or stop the flow in a pipeline.

  • 2.Can a gate valve be used for flow control?

    No, it’s not suitable for throttling.

  • 3.Is a gate valve better than a ball valve?

    Each has different uses—gate valves are better for isolation in large systems.

  • 4.What media can gate valves handle?

    They can handle water, oil, gas, steam, and slurry.

  • 5.How do I know if a gate valve is open or closed?

    In rising stem types, the stem position indicates the valve status.

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