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Carbon Steel Knife Gate Valve

Carbon Steel Flanged Type Handwheel Bonneted Knife Gate Valve

    The Carbon Steel Flanged Type Handwheel Bonneted Knife Gate Valve is a heavy-duty isolation valve designed for reliable shut-off in slurry, liquid, and solid-laden flow systems. Constructed with a carbon steel body, sealed bonnet, and manual handwheel operation, this valve is ideal for rugged industrial environments where strength, durability, and ease of maintenance are key.

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    The Carbon Steel Flanged Type Handwheel Bonneted Knife Gate Valve is a heavy-duty isolation valve designed for reliable shut-off in slurry, liquid, and solid-laden flow systems. Constructed with a carbon steel body, sealed bonnet, and manual handwheel operation, this valve is ideal for rugged industrial environments where strength, durability, and ease of maintenance are key.

    Key Features

    • Valve Type: Flanged knife gate valve with manual handwheel & enclosed bonnet

    • Body Material: Carbon Steel (WCB / ASTM A216 WCB)

    • Gate Material: Stainless Steel 304 / 316 or optional hard-faced alloy

    • Stem: Rising or non-rising stem, SS or carbon steel

    • Bonnet: Bolted bonnet to protect stem and packing from dust/slurry

    • Size Range: DN50 – DN1000 (2″ – 40″)

    • Connection: Flanged ends – ANSI, DIN, JIS options available

    • Flow Direction: Unidirectional (standard) or bidirectional (optional)

    • Seat Options: Metal-to-metal, EPDM, PTFE, NBR for better sealing

    Technical Specifications

    SpecificationValue
    Size RangeDN50 – DN1000
    Pressure RatingPN10 / PN16 / ANSI 150LB
    Temperature Range-10°C to 250°C (depending on seat)
    Face-to-Face StandardMSS-SP-81 or customized
    Leakage ClassClass VI / bubble-tight available
    ActuationManual handwheel (gearbox optional)

    Product Advantages

    ✅ Strong and Durable Carbon Steel Body – suitable for high pressure and mechanical stress
    ✅ Full Bonnet Protection – shields the stem and packing from abrasive and dusty environments
    ✅ Low Torque Operation – handwheel operation is smooth and stable
    ✅ Cost-Effective – lower cost than stainless steel, ideal for non-corrosive or mildly corrosive service
    ✅ Customizable – can be upgraded with flushing ports, stem covers, or position indicators

    Applications

    • Mining and Mineral Processing: Tailings, slurry, gangue water

    • Power Plants: Bottom ash, fly ash, FGD slurry

    • Paper & Pulp Industry: Stock handling, fiber-rich media

    • Sewage & Wastewater: Thick sludge and sediment flows

    • Chemical Processing: Non-corrosive or mildly corrosive media

    • Food Waste or Biomass Systems: Solid-liquid mixed flows

    Optional Features

    • Gearbox Handwheel for large diameters

    • Purge Ports on seat area for flushing solids

    • Locking Device for security or safety lockout

    • Position Indicator or Limit Switches

    • Extended Bonnet for high-temperature environments

    Manufacturing Standards & Testing

    • Face-to-face per MSS-SP-81 or customer drawing

    • Flanges per ANSI B16.5, DIN PN10/16, or JIS 10K

    • 100% pressure-tested before shipping

    • CE, ISO 9001 certified

    • Optional material certification: EN10204 3.1

    Why Choose This Valve?

    🛠 Heavy-Duty Build – suitable for industrial-grade slurry & utility systems
    💧 Leak Prevention – bonnet seals the packing from external contamination
    🔧 Manual Simplicity – easy to operate and maintain
    📦 Versatile Design – fits multiple flange standards and seat materials
    💰 Excellent Value – ideal for cost-sensitive projects with demanding specs