• Valve Categories

    • Knife Gate Valve SG73-E Heavy Duty

    DN

    50~2400 (2"~96")

    PN

    0.1~4.0 (Class300)

    Temperature Range

    -46°C~850°C

    Connection

    Flanged

    Installation Direction

    Unidirectional, 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-E is a kind of heavy duty structure where the gate is hidden inside the body. The upper seal is composed of stem, packing, and cover, which allows a longer service life. The internal seal can be made of a movable seat, which can be disassembled and replaced on site once it is worn out. The wedge block is installed on the gate, and the wedge block on both sides of the body forms a reliable auxiliary sealing structure, which greatly improves the sealing performance and pressure bearing capacity of the valve.

    Knife Gate Valve SG73-E Heavy Duty

    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.

    The gland effectively protects the internal packing, thus preventing the medium leaking out from the stem. Also, it can be opened and then the packing can be replaced in time to solve the problem of leakage from the stem.

    The design of the body and cover greatly improves the overall pressure bearing capacity of the valve, ensuring that the packing is well sealed and there is no leakage in the high-pressure pipeline.

    In order to cope with higher pressure, the disc can be thickened by requirements.

    The thickness of the body is thicker than that of ordinary knife gate valves, and there are multiple reinforcement designs that can withstand higher pipeline pressure.

    Resilient seat and metal seat can be selected according to the medium.

    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.

    The gland effectively protects the internal packing, thus preventing the medium leaking out from the stem. Also, it can be opened and then the packing can be replaced in time to solve the problem of leakage from the stem.

    The design of the body and cover greatly improves the overall pressure bearing capacity of the valve, ensuring that the packing is well sealed and there is no leakage in the high-pressure pipeline.

    In order to cope with higher pressure, the disc can be thickened by requirements.

    The thickness of the body is thicker than that of ordinary knife gate valves, and there are multiple reinforcement designs that can withstand higher pipeline pressure.

    Resilient seat and metal seat can be selected according to the medium.

    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-E Heavy Duty's Drawing

    GB/T 9113 PN16

    DNLDD1D2bfn-Φd
    50701651251021634-18
    65701851451221838-18
    80702001601382038-18
    100702201801582038-18
    125902502101882238-18
    150902852402122438-22
    20010034029526826312-22
    25011440535532030312-26
    30011446041037830412-26
    35012752047043834416-26
    40014058052549036416-30
    45015264058555040420-30
    50015271565061044420-33
    60017884077072548520-36
    70022991084079540524-36
    800241102595090042524-39
    90024111251050100044528-39
    100030012551170111546528-42
    120035014851390133052532-48

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