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      5. DELCO Manual Casting Wafer Iron EPDM Seated Butterfly Valve

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      Válvula de mariposa tipo wafer
      Wafer Butterfly Valve 5
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      Wafer Butterfly Valve 1

      Electric Wafer Butterfly Valve | Ductile Iron Valve for Industrial & HVAC Applications

      This electric actuated wafer butterfly valve is a versatile and economical solution for industrial and commercial flow control. Featuring a durable ductile iron body and a resilient seat (available in EPDM, PTFE, and more), it provides reliable sealing for water, air, and gas services. Its compact, lightweight design allows for easy installation between pipe flanges, making this wafer butterfly valve ideal for HVAC, water treatment, and a wide range of general-purpose applications.

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        Company TypeValve Manufacturer
        Year Established2005
        Product RangeElectric Valve, Pneumatic Valve, Control Valve, Solenoid Valve, Ball Valve, Gate Valve, Globe Valve, Check Valve, etc.
        OEM/ODM SupportYes, we offer both OEM (Original Equipment Manufacturer) and ODM (Original Design Manufacturer) services.
        Factory Area5000 square meters
        Certifications & Quality StandardsISO, CE, ROHS, SGS, FDA
        Market CoverageGlobal
        Technical Support & After-Sales ServiceTop quality and customer service available 24/7, including warranty period and customer support.
        MissionTo provide customers with top-quality valve solutions and services.
        VisionTo be the leading valve manufacturer brand in the world.

        Electric Wafer Butterfly Valve: The Versatile and Economical Choice for Flow Control

        The electric actuated wafer butterfly valve is a cornerstone of modern industrial and commercial piping systems, celebrated for its simple, reliable design and exceptional economic value. This valve is engineered to provide efficient on/off and throttling control for a wide array of fluids, including water, air, gas, and other compatible media. Its defining feature is the compact wafer-style body, which is designed to be easily installed between two pipe flanges. When paired with a robust and reliable electric actuator, this wafer butterfly valve becomes a powerful tool for automation in applications ranging from HVAC and water treatment to general industrial services. With its lightweight construction, low-torque operation, and excellent flow characteristics, it stands as a preferred choice for engineers and operators seeking dependable performance and ease of use.

        Core Advantages & Features

        Compact, Lightweight Wafer-Style Design

        The wafer butterfly valve features a streamlined and minimalist body design that allows it to be “sandwiched” between two existing pipe flanges, secured by long bolts that run from one flange to the other. This innovative configuration offers several key advantages. It makes the valve exceptionally lightweight and compact compared to traditional flanged or lug-style valves, which simplifies handling and significantly reduces installation time and cost. The smaller footprint is ideal for systems where space is limited, and the reduced material usage makes it a highly cost-effective solution without compromising performance.

        Durable and Reliable Construction

        Built for longevity, this wafer butterfly valve is available with a body and disc made from robust materials including Ductile Iron, Cast Iron (CI), WCB Carbon Steel, and Stainless Steel (SS). Ductile iron, in particular, offers superior strength and impact resistance compared to standard cast iron, ensuring durability in demanding industrial environments. The valve incorporates a high-strength, one-piece stainless steel stem, providing a reliable connection to the electric actuator and ensuring consistent torque transmission for smooth and dependable operation.

        Excellent Sealing and Flow Characteristics

        At the heart of the valve is a resilient seat, which provides a bubble-tight seal when the valve is in the closed position. A wide range of seating materials is available, including NBR, EPDM, VITON, and PTFE, allowing the valve to be configured for various temperatures and chemical compatibilities. The valve features a simple structure with a midline design, which contributes to its excellent sealing capabilities and efficient performance. Hydraulically, this wafer butterfly valve is highly efficient, boasting a low flow resistance coefficient and flow characteristics that tend towards a straight line, making it suitable for both on/off and basic throttling control. Its design also ensures that it will not retain debris, a crucial feature in water and sewage applications.

        Powerful and Versatile Electric Actuation

        This wafer butterfly valve is paired with a high-performance electric actuator for seamless automation. The actuator is housed in a hard aluminum alloy body with an IP65 protection rating, making it resistant to dust and water ingress. A key benefit of butterfly valves is their low driving torque requirement, which allows for the use of more compact and energy-efficient actuators. The actuator’s self-locking gear train ensures the valve disc remains stable in its set position. For advanced process control, Regulation or Intelligent type actuators are available, capable of responding to 4-20mA or 0-10V signals for precise flow modulation.

        Broad Industrial and Commercial Applications

        The versatility and reliability of the electric wafer butterfly valve make it suitable for a vast range of industries and systems, including:

        • Water supply and drainage

        • Sewage and wastewater treatment

        • HVAC and heating systems

        • Hydropower and energy systems

        • Metallurgy and textile industries

        • Food processing

        • Shipbuilding and marine applications

        What is a wafer butterfly valve?

        A wafer butterfly valve is a type of quarter-turn valve that features a compact, ring-like body designed to be "sandwiched" between two pipe flanges. It is held in place by long bolts that pass through the flanges on either side of the valve, making it a space-saving and lightweight option.

        What is the main advantage of a wafer butterfly valve?

        The main advantages are its light weight, compact size, and lower cost compared to other butterfly valve types like lug or double-flanged models. This makes it easier and faster to install, especially in large-diameter pipelines or tight spaces.

        What applications is this ductile iron wafer butterfly valve best for?

        This valve is highly versatile and is considered a preferred conventional choice for pipelines in industries like water supply and drainage, sewage, heating, gas, shipbuilding, hydropower, and metallurgy. It is ideal for general-purpose flow control of liquids and gases at moderate pressures and temperatures.

        What does "resilient seated" mean?

        "Resilient seated" means the valve uses a soft, flexible seal material (like EPDM, NBR, or PTFE) that lines the valve body. When the metal disc closes, it presses into this soft seat to create a bubble-tight, zero-leakage seal, which is ideal for on/off applications.

        Can this wafer butterfly valve be used for throttling or just on/off?

        It can be used for both. The valve's design provides flow characteristics that tend towards a straight line, making it suitable for basic throttling and flow regulation. When paired with a modulating electric actuator (Regulation Type), it can be precisely positioned to control the flow rate.

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