• Valve Categories

    • Concentric Wafer Butterfly Valve Type Lug SB71-LT

    DN

    25~1200 (1"~48")

    PN

    0.6~2.5 (Class150, 5K, 10K)

    Temperature Range

    -20℃~150℃

    Connection

    Wafer

    Installation Direction

    Bidirectional

    Design

    GB/T12238, BS EN593, API609

    Face to Face

    GB/T12221, BS EN558-1

    Flange Drilling

    GB/T9113, ASME B16.5, EN1092, GOST12820, GOST33259, DIN2501

    Top Connection

    ISO5211, GOST55510

    Inspection

    GB/T13927, ISO5028, API598, JB/T9092

    Body Materials

    GGG40, WCB, CF8, CF8M, CF3, CF3M

    Disc Materials

    GGG40, GGG40+Hypalon, CF8, CF8M, CF3, CF3M, Duplex Stainless Steel

    Stem Materials

    45#, 410, 416, 431, 304, 316

    Seat Materials

    EPDM, NBR, NR, SBR, Hypalon, Viton, MVQ

    Features & Benefits

    SB71-LT has the advantages of compact structure and lightweight, compared to the typical wafer butterfly valve, and can be connected to matching flanges and pipelines through more bolts, increasing its stability. It can be installed not only in the middle section of the pipeline, but also at the end of the pipeline.

    Concentric Wafer Butterfly Valve Type Lug SB71-LT

    The stem can be customized into different shapes (square or round+key)to connect the drive.

    It has the function of maintaining the position of the valve stem and can ensure the sealing between the valve stem and the valve body. And the material can be adapted to the medium.

    Easy to install, simple structure, small size, light weight, economical, widely applicable. The lug type makes it more tightly connected to the pipeline than the wafer type, and it is more cost-effective than the flange type.

    It has zero leakage sealing and is replaceable & wear resistant. The material can be adapted to the medium. The rubber or resin valve seat is not easy to deform while its sealing is ensured. The valve seat is anti-aging and corrosion-resistant and its streamlined design makes the water flow smoother. Concentric butterfly valve with hard backrest needs to be equipped with a special flange.

    It has streamlined design, small resistance, large flow. Its material can be selected according to the medium, such as vulcanized rubber or fluoroplastics.

    It can transmit greater torque without pin fixing, ensure the surface of disc is smooth and more resistant to erosion and corrosion,facilitate the replacement of stem or disc, make disassembly and assembly more convenient.

    The stem can be customized into different shapes (square or round+key)to connect the drive.

    It has the function of maintaining the position of the valve stem and can ensure the sealing between the valve stem and the valve body. And the material can be adapted to the medium.

    Easy to install, simple structure, small size, light weight, economical, widely applicable. The lug type makes it more tightly connected to the pipeline than the wafer type, and it is more cost-effective than the flange type.

    It has zero leakage sealing and is replaceable & wear resistant. The material can be adapted to the medium. The rubber or resin valve seat is not easy to deform while its sealing is ensured. The valve seat is anti-aging and corrosion-resistant and its streamlined design makes the water flow smoother. Concentric butterfly valve with hard backrest needs to be equipped with a special flange.

    It has streamlined design, small resistance, large flow. Its material can be selected according to the medium, such as vulcanized rubber or fluoroplastics.

    It can transmit greater torque without pin fixing, ensure the surface of disc is smooth and more resistant to erosion and corrosion,facilitate the replacement of stem or disc, make disassembly and assembly more convenient.

    Industry Options

    MaterialsCharacteristicsLow Temp. ℃High Temp. ℃Recommended ℃
    NRHigh elasticity-2085-5~70
    NBROil resistivity-30100-15~90
    EPDMAging resistance, ozone resistance, corrosion resistance-40125-25~110
    HT EPDMAging resistance, ozone resistance, corrosion resistance, heat resistance-40150-25~135
    Wear-resistantExcellent traction performance and wear resistance-30100-15~100
    CROil, heat, flame, sunlight, ozone, acid and alkali resistance-30125-15~100
    HypalonOxidation resistance, resistance to winding and cracking-40120-25~110
    FPM (Viton)Chemical and most oils resistance, (except ketones & esters)-20200-5~150
    MVQ (Silicon)High and low temperature resistance, oil, corrosion resistance-55200-30~180
    PFAExcellent chemical corrosion resistance, low friction coefficient-60200-45~180
    FEP (F46)Chemical resistance, radiation resistance-20150-5~120
    PTFEHeat, cold, acid, alkali, organic solvents resistant-60180-45~150
    RPTFECorrosion resistance, low friction coefficient-60180-45~150
    UPVCCorrosion and pressure resistance, hygiene-30100-15~80
    CPVCCorrosion and pressure resistance, hygiene-30110-15~95
    PVDFAnti aging and chemical resistance-30100-15~70

    Dimensions

    Concentric Wafer Butterfly Valve Type Lug SB71-LT's Drawing
    DNLABSxSΦGHISO
    5211    		ΦEΦE1n0-Φd0PN10PN16ANSI 150LB
    ΦD1n-ΦdΦD1n-ΦdΦD1n-Φd
    5043132729x925F0565504-81254-181254-18120.74-18
    6546138829x925F0565504-81454-181454-18139.74-18
    8046154969x925F0565504-81608-181608-18152.44-18
    1005216910911x1128F0790704-101808-181808-18190.58-18
    1255618212514x1428F0790704-102108-182108-18215.98-22
    1505619713814x1428F0790704-102408-222408-22241.38-22
    2006023517217x1735F101251024-122958-2229512-22298.58-22
    2506826720722x2240F101251024-1235012-2235512-2636212-26
    3007830523822x2240F101251024-1240012-2241012-26431.812-26
    3507833626522x2240F101251024-1246016-2247016-26476.312-29
    4008640030433.252F141751404-1851516-2652516-30539.516-29
    4501034113373852F141751404-1856520-2658520-3057816-32
    50012746036841.264F141751404-1862020-2665020-3363520-32
    60015452342850.770F162101654-2272520-3077020-36749.520-35

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