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V-Type Ball Valve

Structural Features

• V-shaped ball core: The hemispherical valve core has a V-shaped notch, which is the core component for regulation and shearing.

• Valve seat: It mates with the V-shaped notch to form a sealing surface. Soft seals (TFM, etc.) are suitable for clean media, while hard seals (welded or sprayed hard alloy) can be used in high-temperature, high-pressure, highly corrosive, or particulate-containing conditions.

Working Principle

• Regulation Function: As the valve core rotates, the overlap area between the V-shaped notch and the valve seat continuously changes, creating an equal percentage flow characteristic (opening degree and flow rate are logarithmically related), achieving high-precision control within the 30%-70% opening range.

• Shearing and Self-Cleaning: The V-shaped notch edge, in contact with the valve seat, cuts off fibers and small solid particles in the medium, preventing blockage; the relative movement between the valve core and valve seat during rotation scrapes away media residue on the sealing surface, achieving self-cleaning.

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Product Description

Performance Parameters

• Nominal Diameter: 1"～24"
• Nominal Pressure: Class 150, 300LB
• Body Material: Carbon Steel (WCB), Stainless Steel (304/316), Special Alloy Materials
• Sealing Material: TFM, PEEK, Metal Seal

Application Scenarios

• Chemical Industry: Handling corrosive media containing fibers, slurries, or particles.

• Paper Industry: Flow regulation and shut-off of fibrous media such as pulp, black liquor, and white liquor.

• Petrochemical Industry: Working conditions involving high-viscosity media such as wax oil and residual oil, or media containing catalyst particles.

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Related Products

Forged Steel Ball Valve

Key Features

• High-Strength Material: Forging process removes porosity and looseness, resulting in dense grains, high tensile strength, and superior wear resistance compared to cast steel.

• Reliable Sealing: Soft seal (reinforced PTFE/PPL) or hard seal (metal-to-metal), supporting double sealing, fireproof and anti-static.

• Stable Structure: Available in two-piece/three-piece flange connections, fixed ball or floating ball structure, and a split valve body for easy maintenance.

• Highly Efficient Opening and Closing: 90° rotation, low torque, fast opening and closing, suitable for frequent operation.

• Wide Temperature and Pressure Compatibility: Temperature range from -196℃ to 450℃, pressure rating from Class 150 to 1500.

3 PIECE BALL VALVE

Structural Features

• The valve body is composed of three forged steel pieces bolted together.

• The valve core, seat, and seals are all housed in the middle valve body section.

• Common connection methods: threaded (NPT/BSP), welded, quick-connect.

• Generally small diameter: mainly DN6～DN100.

• Mostly floating ball structure, reliable sealing, and compact size.

Eccentric Hemispherical Valve

Structure and Principle

• The valve core is hemispherical, with its rotation center eccentric to the valve body center.

• When open: The hemisphere disengages from the valve seat, resulting in no friction and low torque.

• When closed: The hemisphere presses against the valve seat, forming a line/surface seal.

• Typical structures: Side-mounted/Top-mounted, eccentric shaft, eccentric hemisphere.

Three-Way Ball Valve

Structural Features

• Valve body is a three-way structure with L- or T-shaped ports.

• The ball has an L-shaped or T-shaped channel.

• Mostly a floating ball structure; some large-diameter models are fixed ball.

• Common connections: threaded, flanged, welded, quick-connect.

• Actuation methods: manual, pneumatic, electric.

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