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Lug Butterfly Valve with Worm Gear - China Suppliers and Factory, Size 2~24 / DN50-DN600, PN10, PN16
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Worm gear operated lug butterfly valve of Bundor.png.jpg
Worm gear operated lug butterfly valve Bundor.png.jpg
Worm gear operated lug butterfly valve from Bundor.png.jpg
Worm gear operated lug butterfly valves Bundor.png.jpg

Lug Butterfly Valve with Worm Gear - China Suppliers and Factory, Size 2~24 / DN50-DN600, PN10, PN16

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Size Range: 2~24 / DN50 - DN600

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Pressure Ratings: PN10, PN16

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Seat Materials: NBR, EPDM, VITON, PTFE

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Disc Materials: Ductile Iron, WCB, CF8, CF8M, Aluminum Bronze C958

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Stem Materials: SS304, SS316

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End Connection Type: Wafer

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As one of the leading China suppliers and manufacturers, our lug butterfly valve complies with the ISO 5211 standard, ensuring quality and reliability.

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    Product Details

    Product Details

    The lug butterfly valve, which has lugs that allow it to be bolted onto the flanges and provide a secure connection, is appropriate for applications where the valve must be installed between two flanges. On the other hand, the wafer butterfly valve, which has a wafer that allows it to be sandwiched between the pipes and provide a tight seal, is appropriate for applications where the valve must be installed between two pipes.

    Wafer-type butterfly valves typically come with the lowest price tag among the various connection methods. Lug-type valves are next in line, while flange-type valves are the most costly, with price generally correlating to overall weight. For further details on lug butterfly valves with handles and their uses, reach out to Fluido.

    Key Features
    • 🛡 Explosion-proof valve stem: Designed to prevent the valve stem from being ejected under pressure.
    • ⇄ Bidirectional: Capable of operating effectively in both flow directions.
    • 🔥 Fire Safety Design: Carefully designed to maintain integrity and performance even in the event of a fire.
    • ⚙ Low-friction valve seat: The valve seat is designed to minimize friction, resulting in smoother operation.
    Standard Test
    Valve Body Test

    This test is conducted after the valve assembly is completed and the valve disc is in the half-open position. The test pressure is 1.5 times the working pressure, and water is used. It is also known as the valve body hydrostatic test.

    Seat Ring Test

    This test is conducted with water at 1.1 times the working pressure.

    Functional / Operational Testing

    During the final inspection, each valve and its actuator (flow control lever/gear/pneumatic actuator) will undergo a comprehensive operational test (opening/closing). This test is conducted under no-pressure and ambient temperature conditions to ensure proper functioning of the valve/actuator components (including solenoid valves, limit switches, and accessories such as air filter regulators).

    Special Testing

    Additional testing can be performed according to the customer's specific instructions.

    Specification
    Lug Butterfly Valve Worm Gear

    No.

    Part Name

    Material

    1

    Body

    SS316/SS304

    2

    Hex Nut

    SS304

    3

    Gasket

    SS304

    4

    Seat

    PTFE

    5

    Ball

    SS316/SS304

    6

    Stem

    SS316/SS304

    7

    Stem Gasket

    PTFE

    8

    Packing

    PTFE

    9

    Gland

    SS304

    10

    Handle

    SS201

    11

    Spring Washer

    SS304

    12

    Nut

    SS304
    Dimensions
    DN50 — DN350
    DN A D1 L1 L2 L3 B PN16 PN10 150LB φD3 φD4 n1-φd D5
    D2 n-M D2 n-M D2 n-M
    2″ DN50 42 73.3 54 161 25 9 125 4-M16 125 4-M16 120.7 4-5/8″ 65 50 4-8 135
    2.5″ DN65 44 86 62 175 25 9 145 4-M16 145 4-M16 139.7 4-5/8″ 65 50 4-8 135
    3″ DN80 45 100.9 82 181 25 9 160 8-M16 160 8-M16 152.4 4-5/8″ 65 50 4-8 135
    4″ DN100 51.5 132 99 200 28 11 180 8-M16 180 8-M16 190.5 8-5/8″ 90 70 4-10 135
    5″ DN125 54 156 114 213 28 14 210 8-M16 210 8-M16 215.9 8-3/4″ 90 70 4-10 135
    6″ DN150 55 185 129 236 28 14 240 8-M20 240 8-M20 241.3 8-3/4″ 90 70 4-10 135
    8″ DN200 59 235 150 260 33 17 295 12-M20 295 8-M20 298.5 8-3/4″ 125 102 4-12 270
    10″ DN250 66 289 186 292 33 22 355 12-M24 350 12-M20 362 12-7/8″ 125 102 4-12 270
    12″ DN300 76 341 218 337 33 22 410 12-M24 400 12-M20 431.8 12-7/8″ 125 102 4-12 270
    14″ DN350 76 372 242 368 45 22 470 16-M24 460 16-M20 476.3 12-1″ 125 102 4-12 270
    DN400 — DN600
    DN A D1 L1 L2 L3 φD N-b K PN16 PN10 150LB φD3 φD4 n1-φd1
    D2 n-φd D2 n-φd D2 n-φd
    16″ DN400 86.5 436 320 403 52 33.15 45667 36.2 525 16-M27 515 16-M24 539.8 16-1″ 175 140 45765
    18″ DN450 104.6 487 351 415 52 38 45667 41 585 20-M27 565 20-M24 577.9 16-1 1/8″ 175 140 45765
    20″ DN500 130 532 386 466 64 41.15 45669 44.2 650 20-M30 620 20-M24 635 20-1 1/8″ 175 140 45765
    24″ DN600 152 651 446 525 70 50.65 45673 54.7 770 20-M33 725 20-M27 749.3 20-1 1/4″ 210 165 45769
    Frequently Asked Questions
    Q What is the difference between a lug butterfly valve and a wafer butterfly valve?
    A lug butterfly valve features threaded inserts (lugs) that allow it to be bolted directly onto pipe flanges on both sides, providing a secure end-of-line connection. A wafer butterfly valve is designed to be sandwiched between two pipe flanges using through-bolts, creating a tight seal. Lug-type valves are generally more expensive than wafer-type due to their additional hardware and weight.
    Q What materials are used in the construction of this lug butterfly valve?
    The valve body and key components such as the ball and stem are made from SS316 or SS304 stainless steel for excellent corrosion resistance. The seat, stem gasket, and packing use PTFE for low-friction, chemical-resistant sealing. Other hardware components including hex nuts, gaskets, gland, spring washer, and nut are made from SS304, while the handle is made from SS201 stainless steel.
    Q What pressure testing standards does this valve comply with?
    Each valve undergoes a rigorous three-stage testing process: a valve body hydrostatic test at 1.5 times the working pressure (with the disc in the half-open position), a seat ring test at 1.1 times the working pressure using water, and a full functional/operational test covering opening and closing cycles under ambient, no-pressure conditions. Additional special testing can also be arranged per customer requirements.
    Q What size range is available for this lug butterfly valve?
    This lug butterfly valve is available in a wide range of sizes from DN50 (2″) up to DN600 (24″), covering both standard metric (DN) and imperial (inch) sizing. Dimensional data is provided for PN10, PN16, and 150LB flange standards across all available sizes.
    Q Is this butterfly valve suitable for fire-hazard or high-risk environments?
    Yes. This valve incorporates a dedicated Fire Safety Design that ensures it maintains structural integrity and operational performance even in the event of a fire. Additionally, the explosion-proof valve stem design prevents the stem from being ejected under pressure, making it suitable for demanding industrial and safety-critical environments.
    Q Can this valve be operated with different types of actuators?
    Yes. This lug butterfly valve is compatible with multiple actuator types, including manual flow control levers, worm gear operators, and pneumatic actuators. Each valve and its actuator combination undergoes a comprehensive operational test during final inspection to verify correct performance of all components, including solenoid valves, limit switches, and air filter regulators.

    Product Packaging

    application 1
    application 2
    application 3
    application 4
    application 5
    application 6
    01020304

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