Задвижки

  • ФОТО ПОКАЗЫВАЕТ ТЕХНИЧЕСКИЕ ХАРАКТЕРИСТИКИ, КАК НИЖЕ
    РАЗМЕР:2″
    РЕЙТИНГ:150LB
    КУЗОВ И КАПОТ: C95500
    ДИСК: C95500 ТВЕРДЫЙ
    Стержень: МОНЕЛЬ К500
    СИДЕНЬЕ: МОНЕЛЬ К500
    ПРИВОД: КОЛЕСО
  • ФОТО ПОКАЗЫВАЕТ ТЕХНИЧЕСКИЕ ХАРАКТЕРИСТИКИ, КАК НИЖЕ
    РАЗМЕР:DN15
    РЕЙТИНГ:PN16
    КОРПУС И КРЫШКА: ЛАТУНЬ
    ДИСК: ЛАТУНЬ
    СТЕРЖЕНЬ: ЛАТУНЬ
    СЕДЛО: ЛАТУНЬ
    ПРИВОД: КОЛЕСО
  • ФОТО ПОКАЗЫВАЕТ ТЕХНИЧЕСКИЕ ХАРАКТЕРИСТИКИ, КАК НИЖЕ
    РАЗМЕР:2″
    РЕЙТИНГ:150LB
    КУЗОВ И КАПОТ: B62
    ДИСК: B62, ЦЕЛЬНЫЙ
    Стержень: ASTM A182 F316
    СИДЕНЬЕ: B62
    ПРИВОД: КОЛЕСО
  • Размер: 3 дюйма (DN80)
    Номинальное давление: 150 фунтов (PN20)
    Основные материалы:
    Корпус/Крышка/Диск/Шток: ASTM B148 C95800 (сплав никель-алюминиевой бронзы)
    Сиденье: цельное, металл-металл
    Проектирование и эксплуатация:
    Операция: Маховик
    Концевое соединение: фланец RF (выступ)
  • Размер: DN65 (2½ дюйма)
    Номинальное давление: PN250 (класс 1500)
    Основные материалы:
    Корпус и крышка: ASTM A182 F11 (кованая хромомолибденовая сталь, 1¼Cr-½Mo)
    Клин: ASTM A182 F11 + наплавка 13Cr (повышенная износостойкость)
    Шток: ASTM A182 F6a (мартенситная нержавеющая сталь)
    Седло: с твердосплавным покрытием Stellite 6 (превосходная стойкость к эрозии и истиранию)
    Управление: маховик (ручное управление)
    Концевое соединение: стыковая сварка (BW) согласно ASME B16.25

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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