一．Product Introduction
The Pneumatic V port Ball Control Valve features a cylindrical spring-preloaded movable metal seat structure with compensation, ensuring reliable sealing performance. The ball core and seat avoid jamming or separation, enabling a long service life. The V-shaped notch on the ball core and the metal seat have a shearing effect, making it particularly suitable for controlling media such as high-viscosity fluids, those containing fibers, solid particles, and slurries. It performs exceptionally well in applications like pulp control in the paper industry.
As a type of ball valve, its closure member is a V-notch on a hemisphere. The sharp edge of the V-notch provides a wiping action between the closure members during rotation, offering a strong cutting force for the medium. The V-notch of the ball and the seat flow channel form a fan-shaped area, and the flow channel cross-sectional area can be changed during rotation, enabling precise regulation of the medium. It is an angle-rotating control valve with sealing performance the same as that of ordinary ball valves, thus having both regulating and on-off functions. When paired with pneumatic or electric actuators, it is widely used in industrial process automation systems.
It is applicable in various fields including energy, petrochemical, metallurgy, chemical industry, mining, papermaking, environmental protection, biochemistry, pharmaceuticals, petroleum, electric power, printing and dyeing, light industry, food, tobacco, sugar manufacturing, and beverages.
二．Product Features
- Integral Valve Body Structure: Both wafer-type and flanged V-notch ball valves adopt an integral side-mounted structure, which has high structural rigidity, making them less prone to deformation and external leakage.
- Upper and Lower Self-lubricating Bearings: The valve body is equipped with upper and lower self-lubricating bearings, which have a large contact area with the valve stem, high load-bearing capacity, and a small friction coefficient, reducing the torque of the valve.
- Optional Valve Seat Types: The seat can be selected as metal hard seal or PTFE soft seal according to the medium and working conditions. The sealing surface of the metal hard seal seat is surfacing with hard alloy, and the spherical surface is hardened by hard chrome plating, spray welding, ion nitriding, etc., enhancing the service life of the sealing surface and improving the temperature resistance. The soft seal PTFE seat or reinforced PTFE seat has good sealing performance, corrosion resistance, and a wide application range.
- Economic Practicality: The valve body is lightweight, the valve stem torque is small, and the corresponding specifications of the matched pneumatic or electric actuators are small. Compared with other types of control valves, it has a high cost performance.
- Wide Medium Adaptability: Due to the shearing force between the V-notch and the seat, and the smooth and round flow channel in the valve cavity, the medium is not easy to accumulate in the cavity. Therefore, it is not only suitable for liquid media but also more suitable for the system control of media with fibers and solid particles.
- Precise Control for Small Flow Rates: Through the processing of special V-notch on small-diameter valve cores, precise control with small Cv values can be achieved.
三．Technical Data
-
- Pressure Rating: PN16 (1.6MPa)
- Body Material: Carbon Steel (C)
- Seat Type: Metal Hard Seal (H)
- Actuation Type: Pneumatic
- Connection Type: Flanged
- Size Range: Typically available in various diameters to meet different pipeline requirements (specific sizes need to be confirmed according to actual products)
- Temperature Range: Suitable for medium temperatures matching the carbon steel and hard seal material properties (generally up to around 425℃, specific values depend on detailed material and design)
- Flow Characteristic: Linear or Equal Percentage (based on V-notch design)
- Seat Leakage Class: Complies with relevant industrial standards for metal hard seal valves (e.g., ANSI/FCI 70-2 Class IV or higher)
- Media Compatibility: Applicable to high-viscosity fluids, media containing fibers, solid particles, slurries, as well as general liquids and gases in industries like energy, petrochemical, papermaking, etc.
- Standards Compliance: Manufactured and tested in accordance with relevant industrial valve standards to ensure performance and quality.
四．The main shape and connection size
