• Valve Categories

    • Knife Gate Valve SG73-D Rubber Sleeve

    DN

    50~2400 (2"~96")

    PN

    0.1~4.0 (Class300)

    Temperature Range

    -46°C~850°C

    Connection

    Wafer

    Installation Direction

    Bidirectional

    Design

    JB/T8691

    Face to Face

    GB/T15188

    Flange Drilling

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

    Top Connection

    ISO5211, GOST55510

    Inspection

    GB/T13927, ISO5028, API598, JB/T9092

    Body Materials

    WCB, LCC, LC1, C5,WC6, CF8, CF8M, 321, 316Ti, 904L, 310S, Duplex Stainless Steel

    Disc Materials

    304, 316, 304L, 316L, 321, 316Ti, 904L, 310S, Duplex Stainless Steel

    Stem Materials

    420, 431, 304, 316, 316L, 321

    Seat Materials

    EPDM, NBR, NR, SBR, PTFE, Viton, MVQ, 420, Stellite alloy, Polyurethane, Ceramics

    Features & Benefits

    SG73-D is a kind of self-sealing knife gate valve, and its two rubber sleeves clamp the disc to ensure sealing. When the disc is fully opened, the two seats coincide and are close to each other to form a short all-rubber pipe. The internal pressure of the pipe makes the strength and sealing effect better. Meanwhile, the valve is in a fully open state, the disc and rubber sleeves can be replaced directly, instead of removing the valve and repair it.

    Knife Gate Valve SG73-D Rubber Sleeve

    The ductile iron handwheel is more durable. The right size makes the handwheel rotate more labor-saving.

    The stem bushing acts as a support for the handwheel and drives the stem to rotate through the internal thread to lift the disc. Bronze and steel can be selected by requirements.

    Bearing can be selected for the big size of knife gate valve to reduce the opening & closing torque.

    Different materials can be selected according to the working conditions. Hardness and corrosion resistance are the primary considerations.

    Rubber and nylon packing material can effectively enhance the sealing between the gland and disc. Different materials can be selected according to the medium.

    There is no groove in the flow channel of the body, so the medium will not get stuck and clogged. And it has the characteristics of full-diameter flow, which is suitable for the pipeline of powder granular medium. Different materials can be selected according to the working condition. Two-piece structure is available as requested.

    The lower end of the disc is processed to be thin and sharp, which is easy to cut off viscous medium such as mud and pulp.

    The bidirectional thickened rubber seats not only have sufficient sealing, but also is very wear-resistant, suitable for medium with corrosion.

    The design of the bottom cover can enable the disc to bring out the dirt in the pipeline and clean up the inside of the body in time.

    The ductile iron handwheel is more durable. The right size makes the handwheel rotate more labor-saving.

    The stem bushing acts as a support for the handwheel and drives the stem to rotate through the internal thread to lift the disc. Bronze and steel can be selected by requirements.

    Bearing can be selected for the big size of knife gate valve to reduce the opening & closing torque.

    Different materials can be selected according to the working conditions. Hardness and corrosion resistance are the primary considerations.

    Rubber and nylon packing material can effectively enhance the sealing between the gland and disc. Different materials can be selected according to the medium.

    There is no groove in the flow channel of the body, so the medium will not get stuck and clogged. And it has the characteristics of full-diameter flow, which is suitable for the pipeline of powder granular medium. Different materials can be selected according to the working condition. Two-piece structure is available as requested.

    The lower end of the disc is processed to be thin and sharp, which is easy to cut off viscous medium such as mud and pulp.

    The bidirectional thickened rubber seats not only have sufficient sealing, but also is very wear-resistant, suitable for medium with corrosion.

    The design of the bottom cover can enable the disc to bring out the dirt in the pipeline and clean up the inside of the body in time.

    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
    FPM (Viton)Chemical and most oils resistance, (except ketones & esters)-20200-5~150
    PTFEHeat, cold, acid, alkali, organic solvents resistant-60180-45~150
    Ceramic fiberFire, high temperature resistance, low thermal conductivity-1961050-60~950
    Metal to metalHigh temperature, high pressure, wear, corrosion resistanceRefer to the metal material

    Dimensions

    Knife Gate Valve SG73-D Rubber Sleeve's Drawing

    GB/T 9113 PN10

    DNLDD1D2bfn-Φd
    5054165125991834-18
    65541851451181838-18
    80572001601322038-18
    100642201801562038-18
    125642502101842238-18
    150762852402112238-22
    200763402952662438-22
    2507639535031926312-22
    3008344540037026412-22
    3508350546042926416-22
    4009656551548026416-26
    4509661556553028420-26
    50012167062058228420-26
    60012178072568234520-30
    70018289584079434524-30
    800206101595090136524-33
    90022511151050100138528-33
    100024012301160111238528-36
    120025414551380132844532-39

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