V Type Ball Valve Description
V-ball valve is a specially designed rotary control valve, its core feature is a V-shaped notch machined on the surface of the ball core, through the ball core rotation angle to accurately control the cross-sectional area of the media flow, to achieve linear adjustment of the flow rate.
Structure
- Valve body
Pressure-bearing body, usually flanged or clamped connections, the flow channel is designed as a V-shaped channel to match the ball core structure.
- V-shaped ball core
The surface of the ball is precision machined with a V-shaped notch (the angle is usually 30°-90°), which creates a gradual change of the flow area when rotating.
- Stem and Actuator
The stem connects the sphere to the actuator (electric/pneumatic), transmitting torque for precise rotation; the actuator supports automatic control with a 4-20mA signal.
- Sealing system
Soft seal: PTFE or RPTFE seat, suitable for room temperature clean media;
Hard seal: metal valve seat (stainless steel + tungsten carbide coating), resistant to high temperature and pressure and particle abrasion.
- Auxiliary structure
Double bearing support design reduces starting torque and enhances stability.
V Type Ball Valve specification
Material
| Parts | Material |
|---|---|
| Valve Body/Bonnet | Stainless steel (304/316L), cast steel (WCB), duplex steel (2205) |
| Ball Core | Stainless steel (case-hardened), ceramic-coated (ultra-wear-resistant conditions) |
| Valve Seat | Soft seal: PTFE/PEEK Hard seal: stainless steel + carbide overlay welding |
| Stem Of Valve | Stainless steel (SUS316) with nitrided surface for enhanced wear resistance |
Specification
| Parametric | 范围 |
|---|---|
| Nominal diameter | DN25-DN500 (common DN50-DN300) |
| Pressure rating | PN16–PN64( or Class 150–600LB) |
| Temperature range | Soft Seal：-20℃~200℃ Hard Seal：-29℃~450℃ |
| Driving method | Manual, pneumatic, electric |
V Type Ball Valve
Benefits and Features
- Precise Flow Control
V-notch provides approximate equal percentage flow characteristics, with an adjustment ratio of up to 300:1 and a linear relationship between opening change and flow rate.
- Superior clogging resistance
When rotating the V-shaped edge and the valve seat to form a shear effect, can cut off fibres, solid particles, suitable for slurry, pulp and other high-viscosity media.
- High sealing
Leakage level up to ANSI Class VI (soft seal) or ≤ 10-⁶ × Cv (hard seal).
- Low flow resistance and high flow capacity
Streamlined flow path design, flow capacity (Cv value) is more than 30% higher than ordinary ball valves.
- Long life design
Metal hard seal structure is resistant to particle scouring, action life ≥100,000 times.
Applications
| Industry | Application | Function |
|---|---|---|
| Petrochemicals | Catalytic cracking unit, viscous oil transfer | Precise regulation of high temperature oil flow to prevent coking and clogging |
| Paper industry | Pulp consistency control, black liquor conveying | Cutting of fibre clusters for continuous production |
| Environmental water treatment | Sludge transport, sewage flow regulation | Efficient handling of media containing solid particles |
| Electrometallurgy | Pulverised coal conveying, high temperature flue gas control | Resistant to abrasion and high temperature regulation |
| Food and pharmaceuticals | Molasses and fermentation liquor conveying | No dead space design to meet sanitary requirements |
V-ball valve with V-cut + hard seal technology, become the first choice for high viscosity, solid-containing media flow control, in the process industry to bear the anti-clogging regulation and precise control of the amount of The double mission.
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