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    2-1/2" Flanged Diaphragm Valve, UPVC/ CPVC

    $261.99
    Flanged diaphragm valve with UPVC or CPVC body material, PTFE diaphragm, is used in water treatment, chemical processing, pharmaceuticals and other industries. ATO plastic diaphragm valve has 2-1/2 inch (DN65) flanged port for liquid and flow control.
    *
    SKU: ATO-FDV-DN65
    30-day Returns
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    Delivery date: 6-12 days

    ATO PVC diaphragm valve uses a flexible PTFE diaphragm that separates the valve's body from the flow path. This diaphragm is made of CPVC or UPVC which can withstand corrosive or acidic substances.

    Specification

    Model ATO-FDV-DN65
    Size 2-1/2 inch (DN65)
    Structure Type Flanged Type
    Diaphragm Valve Assembly Parts Material
    Diaphragm PTFE
    Film EPDM
    Valve Body UPVC, CPVC
    Valve Plate UPVC, CPVC, Steel, Stainless Steel
    Cover Limit AS
    Stud Steel, Stainless Steel
    Retaining Nut FRPP
    Washer FRPP
    Wheel Alloy Material
    Platen Steel, Stainless Steel
    Double-Headed Stud and Nut Steel, Stainless Steel
    Bonnet UPVC, CPVC
    Yoke Nut Ht300 Steel
    Stem Steel, Stainless Steel


    Dimension (Unit: mm)

    Flanged PVC diaphragm valve dimension DN15 ~ DN100

    Size Valve Body Material d D L h n-φ
    2-1/2 inch (DN65) UPVC 147 183 255 24 4-φ18
    CPVC 147 182 257 24 4-φ18


    Detail

    Flanged diaphragm valve detail

    Working Pressure

    Size Working Pressure (MPa)
    UPVC CPVC
    20~40℃ 41~60℃ 61~80℃ 0~40℃ 41~60℃ 61~90℃
    1/2" (DN15) 0.8 0.8 0.7 0.7 0.7 0.6
    3/4" (DN20) 0.8 0.8 0.7 0.7 0.7 0.6
    1" (DN25) 0.8 0.8 0.7 0.7 0.7 0.6
    1-1/4" (DN32) 0.7 0.7 0.6 0.7 0.7 0.6
    1-1/2" (DN40) 0.7 0.7 0.6 0.7 0.7 0.5
    2" (DN50) 0.7 0.7 0.6 0.7 0.7 0.5
    2-1/2" (DN65) 0.7 0.7 0.6 0.7 0.7 0.5
    3" (DN80) 0.7 0.7 0.6 0.7 0.7 0.5
    4" (DN100) 0.7 0.7 0.6 0.7 0.6 0.5
    5" (DN125) 0.5 0.5 0.4 0.5 0.5 0.4
    6" (DN150) 0.5 0.5 0.4 0.5 0.4 0.3
    8" (DN200) 0.3 0.3 0.2 0.5 0.3 0.25
    10" (DN250) 0.3 0.3 0.2 0.3 0.3 0.2

    Tips: How does a diaphragm valve stop flow?

    A diaphragm valve stops flow by using a flexible diaphragm, a membrane-like barrier, as the primary sealing element. When the valve is in the open position, the diaphragm is lifted, allowing fluid to pass through the valve. To stop the flow, the operator or actuator lowers the diaphragm, pressing it against the valve seat, creating a tight seal. This action effectively obstructs the flow path and prevents the passage of fluids or gases.

    The diaphragm's flexibility and ability to conform to the seat surface make it an effective and reliable shut-off mechanism. Diaphragm valves are commonly used in applications where precise flow control and cleanliness are crucial, such as in the pharmaceutical, food and beverage, and water treatment industries. Their straightforward design and ease of maintenance make them a popular choice for various applications requiring flow isolation.

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