Introduction to V type ball valve, what are the differences and advantages between O type ball valve

Haidun special valve **** for you to answer:

The V-Port Ball Valve is a variant of the ball valve that has a special ball shape that creates a V-shaped cut-out or notch. This V-cut can be used to regulate and control the fluid, and the V-ball valve provides better flow regulation than a traditional full-bore ball valve.

V-Ball Valve. The following is a brief introduction to the V-type ball valve:

1.Structure and working principle: The V-type ball valve is composed of a ball, a seat and a body. The inside of the sphere has a V-shaped cut-out, which can correspond to the channel of the valve seat when the ball rotates, controlling the flow of the fluid or cutting off the fluid.

V-Ball Valve Spool.

2.V-Cut Advantage: The V-cut of the V-Ball Valve allows the shape of the flow channel between the valve body and the ball to be adjusted as needed, so as to achieve precise control of the fluid.

By rotating the ball, the degree to which the notch corresponds to the seat channel can be adjusted, and the flow rate can be adjusted.

3.Flow regulation performance: Compared with traditional full-bore ball valves, V-ball valves have better performance in flow regulation. By adjusting the angle of rotation of the sphere, precise flow control can be achieved, and multiple intermediate positions can be adjusted from fully open to fully closed.

4.Applications: V-type ball valves are widely used in industrial fields that require precise flow control, especially for fluid control and regulation in process control systems, chemical industry, petroleum, metallurgy, electric power and other fields.

5.Material and sealing performance: The ball and seat of the V-ball valve are usually made of corrosion-resistant metal or high-temperature materials to adapt to different media and working conditions. Good sealing performance can reduce the possibility of leakage.

All in all, the V-Ball Valve achieves a more precise flow regulation capability through its special ball design, which is widely used in applications where precise fluid control is required. Specific application requirements and process requirements may affect the selection and use of V-Ball Valves, so it is recommended to refer to the specifications and operating guidelines of the specific product in the actual application, and consult the relevant professionals for advice.

This ball valve is a fixed ball valve, and it is also a single seat sealed ball valve, the adjustment performance is the best among ball valves, the flow characteristics are equal percentage, and the adjustable ratio is up to 100:1. It has a shearing effect between the V-cut and the metal seat, which is especially suitable for media containing fibers, fine solid particles, slurries, etc.

Ball valve it has the same action of rotation 90 degrees, the difference is that the body is a ball with a circular through hole or channel through its axis. The ball valve is mainly used in the pipeline to cut off, distribute and change the flow direction of the medium, it only needs to rotate 90 degrees of operation and a small torque to close tightly. Ball valves are most suitable for on/off and shut-off valves, but recent developments have designed ball valves to make them throttle and control flow, such as V-shaped ball valves.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

O-type ball valves can be adjusted and shut-off, and are generally used for two-position control.

O-type ball valve adopts floating or fixed design, and the relative moving parts are made of self-lubricating materials with a very small friction coefficient, so the operating torque is small, and the long-term sealing of the sealing grease makes the operation more flexible, and its product advantages are as follows:

1. Low fluid resistance.

Ball valves generally have two structures: bore and diameter, no matter which structure, the flow resistance coefficient of the ball valve is relatively small. The conventional ball valve is a straight-through type, also known as a full-flow ball valve, the channel diameter is equal to the inner diameter of the pipeline, and the resistance loss is only the friction resistance of the same length of pipe. Of all the valves, this ball valve has the least fluid resistance.

There are two ways to reduce the resistance of the piping system: one is to reduce the fluid flow rate by increasing the pipe diameter and valve diameter, which will greatly increase the cost of the piping system. The second is to reduce the local resistance of the valve, and the ball valve is the best choice.

2. The switch is fast and convenient.

The ball valve only needs to be rotated 90 degrees to fully open or close, so it can be opened and closed quickly.

3. Good sealing performance.

The vast majority of ball valve seats are made of elastomeric materials such as polytetraethylene (PTFE), commonly referred to as soft-seal ball valves. The soft seal ball valve has good sealing performance, and the roughness and processing accuracy of the valve sealing surface are not very high.

4. Long life.

Due to the good self-lubrication of PTFE or F4, the coefficient of friction with the sphere is small. Due to the improved machining process, the ball roughness is reduced, which greatly improves the service life of the ball valve.

5. High reliability.

1. The pair of sealing pairs between the ball and the valve seat will not cause abrasion, sharp friction and other failures;

2. After the valve stem is changed to the built-in type, the hidden danger of the valve stem may fly out due to the loosening of the packing gland under the action of fluid pressure;

3. The ball valve with anti-static and fire-resistant structure can be used for pipelines transporting oil, natural gas and gas.

V-type ball valve is a kind of right-angle rotary structure, which can realize the effect of flow regulation, according to the V-shaped angle of the V-shaped ball, to achieve different degrees of proportion, V-type ball valve is generally used with valve actuator and positioner, can achieve proportional adjustment, V-shaped valve core is most suitable for various adjustment occasions, with large rated flow coefficient, large adjustable ratio, good sealing effect, zero sensitivity in adjustment performance, small size, can be installed vertically. It is suitable for controlling gas, steam, liquid and other media. The V-type ball valve is a right-angle rotary structure, which is composed of a V-shaped valve body, a pneumatic actuator, a positioner and other accessories; There is an intrinsic flow characteristic of approximately equal percentage; It adopts a double-bearing structure, with small starting torque, excellent sensitivity and induction speed, and super shearing ability.

The V-Regulating Ball Valve is a type of ball valve that can achieve flow regulation. It is sphere adopted"v"The design of the cluster cleaning can realize the accurate regulation of the fluid flow. The V-type control ball valve has the following characteristics:

1.Good adjustment performance: due to the fact that the sphere presents"v"It can achieve precise flow regulation, high adjustment accuracy, good reliability, and is suitable for occasions that require precise flow control.

2.Small fluid flow resistance: Due to the special structure of the ball, the flow resistance of the fluid when passing through the V-shaped regulating ball valve is smaller than that of the ordinary ball valve, which can reduce the pressure loss of the system.

3.Abrasion resistance: V-type adjustable ball valve ball"v"The structure can reduce the wear of the fluid, thus increasing the service life of the ball valve.

4.Wide range of application: V-type control ball valve is suitable for a variety of media, such as water, steam, oil, acid and alkali, etc., and is widely used in chemical, pharmaceutical, electric power, oil, natural gas and other industries.

It should be noted that the V-shaped regulating ball valve has a certain residual space when closing, so it is not suitable for occasions where the fluid needs to be completely cut off. When choosing a V-shaped regulating ball valve, it is necessary to consider the sell key according to the actual situation to ensure the performance and service life of the valve. At the same time, it is also necessary to select the appropriate material and actuator according to the characteristics of the medium, working conditions and use environment.

The V-shaped regulating ball valve has a shear effect on the valve seat due to the V-shaped structure of the ball core. It is especially suitable for the automatic adjustment of paper rental or rolling pulp, white water, black liquor, white liquor and other suspended particles and thick and turbid slurry fluid media in the process of making residual pulp and papermaking.

Commonly used ball valve models: V-type ball valves, models: VQ40F, VQ640F, etc.; Stainless steel ball valves, macro fiber service models are:

Q41F, Q641F, etc.; Cryogenic ball valves, models: DQ41F, DQ41H, etc.; High temperature ball valve, noisy models are: Q41M, Q641M, etc.; Insulation ball vertical envy valve, the models are:

bq41f、b

Commonly used ball valve models are:

V-type ball valve model: VQ40F, VQ640F, VQ940F, VQ641H, VQ941H, VQ70F, VQ670F, VQ970F, VQ71H, VQ671H, VQ971H;

Insulation ball valve model: BQ41F, BQ641F, BQ941F;

Stainless steel ball valve model: Q41F, Q641F, Q941F, Q41H, Q641H, Q941H; Liquid milling.

Fluorine-lined ball valve model: Q41F46, Q641F46, Q941F46;

Cryogenic ball valve model: DQ41F, DQ41H, DQ41V;

Clamp type ball valve model: Q71F, Q671F, Q971F, Q71H, Q671H, Q971H,

High temperature ball valve model: Q41M, Q641M, Q941M, Q41PPL, Q641PPL, Q941PPL,

Fixed ball valve model: Q347F, Q647F, Q947F, Q347H, Q647H, Q947H, Q347W, Q647W, Q947W;

Turbine buried ball valve Model: Q341F, trapped pure Q341H, Q341W, Q341Y;

Welded ball valve Model: Q61F, Q361F, Q61H, Q661F, Q661H, Q961F, Q961H;

Eccentric hemispherical valve Model: Q340F, Q640F, Q940F, Q340H, Q640H, Q940H, Q340Y, Q640Y, Q940V;

Top-mounted ball valve models: SQ340F, SQ940F, SQ340H, SQ940H, SQ347H, SQ647H, SQ947H, DYQ340F, DYQ640F, DYQ940F;

Three-way ball valve model: Q44F, Q45F, Q44H, Q45H, Q644F, Q645F, Q644H, Q645H, Q944F, Q945F, Q944H, Q945H;

Four-way ball valve model: Q46F, Q46H, Q646F, Q646H, Q946F, Q946H.

The body of the O-type ball valve is equipped with a ball with a middle through hole, and the ball has a through hole with a diameter equal to the diameter of the pipe, and the ball can be rotated in the sealing seat, and there is an annular elastomer on each side of the pipeline direction to achieve sealing. By rotating the ball 90°, the direction of the through hole can be changed, and the ball valve can be opened and closed.

When the O-type ball valve is fully opened, both sides are unobstructed valves, forming a straight pipe channel, two-way sealing, with the best characteristics of "self-cleaning" performance, and is suitable for particularly unclean, fiber-containing medium two-position shut-off occasions. The ball core always rubs against the valve during the opening and closing of the valve, and the sealing between the spool and the seat is achieved by the pre-tight sealing force of the seat pressing against the ball core, but the soft seal seat is particularly good due to its excellent mechanical and physical properties.

The ball core of the V-type ball valve has a V-shaped structure, the valve core is a 1 4 ball shell, with a V-shaped notch, large flow capacity, large adjustable range, shear force, and can be closed tightly, especially suitable for the working conditions of fluid substances with fibers. In general, V-type ball valves are single sealed ball valves. Not suitable for bi-directional use.

V-shaped edges to cut off impurities. In the process of ball rotation, the V-shaped knife edge of the ball is tangent to the valve seat, thereby cutting off the fiber and solid substances in the fluid, while the general ball valve does not have this function, so it is easy to cause the fiber impurities to be stuck when closing, which brings great inconvenience to repair and maintenance. The V-type ball valve has a spool that will not be stuck by the fibers.

In addition, due to the flange connection, it is easy to disassemble and assemble, without special tools, and easy to repair and maintain. When the valve is closed. The V-shaped notch and the valve seat produce a contract-shaped scissor effect, and both have the function of self-cleaning and can prevent the ball core from jamming, the valve body, the valve cover and the valve seat are respectively made of metal point-to-point structure, and the stem spring with a small coefficient of friction is used, so the operating torque is small and very stable.