Diaphragm Valves Screwed
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    Diaphragm Valves Screwed

    The Diaphragm Valve with Screwed End is designed for reliable and precise control of fluids, particularly in corrosive or abrasive environments. Using a flexible diaphragm to regulate flow and provide tight shut-off, this valve isolates the process fluid from the internal components, minimizing wear and contamination.

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    Pressure Class

    PN10

    ,

    PN16

    The screwed end connections (BSP or NPT) ensure ease of installation and removal, making it ideal for low to moderate pressure applications. With its versatility, this valve finds applications in industries like chemical processing, water treatment, pharmaceuticals, and food production.

    Specification

    Details

    Valve Size

    ½" (DN 15) to 4" (DN 100)

    Pressure Rating

    • Typically rated for PN10 or PN16 pressure, depending on valve body material and application.
    • Maximum pressure range: 10 to 16 bar (145 to 232 psi).

    Body Material

    • Stainless Steel (ASTM A351 CF8 / CF8M): For high corrosion resistance and durability in aggressive applications.
    • Cast Iron: For standard applications where temperature and pressure conditions are moderate.
    • Plastic (PVC, PP): For chemical resistance in applications involving acids or alkalis.

    Temperature Range

    • EPDM Diaphragm: -10°C to +120°C (14°F to 248°F)
    • PTFE Diaphragm: -20°C to +180°C (4°F to 356°F)
    • Viton Diaphragm: -20°C to +150°C (4°F to 302°F)
    • Plastic bodies (PVC/PP): Suitable for -10°C to +60°C (14°F to 140°F)

    Diaphragm Materials

    • EPDM: Suitable for water, dilute acids, and alkalis.
    • PTFE: High resistance to chemicals, acids, and aggressive media.
    • Viton: Excellent resistance to chemicals and high temperatures.

    End Connections

    Threaded Ends: Available in BSP or NPT threading standards for easy installation.

    Design Standards

    • Conforms to BS 5156 and EN 13397 for diaphragm valves.
    • Testing according to API 598 or ISO 5208 for valve leakage and hydrostatic testing.
    • Flexible Diaphragm: Provides effective sealing by pressing the diaphragm against the valve seat, allowing for tight shut-off and flow control.
    • Screwed End Connections: Available in BSP or NPT threaded ends for quick and secure installation, making it suitable for small-diameter piping systems.
    • Corrosion Resistance: Available in materials such as stainless steel, cast iron, or plastic (PVC, PP) with diaphragms made of EPDM, PTFE, or Viton for handling aggressive chemicals.
    • Isolated Flow Path: The diaphragm completely isolates the process media from the internal parts of the valve, protecting against contamination and reducing maintenance requirements.
    • Manual or Automated Operation: Can be equipped with handwheel-operated mechanisms for manual control or actuators (pneumatic or electric) for automation.

    Product Types

    Diaphragm Valves Flanged

    Diaphragm Valves Flanged