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Floating Ball Valve

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What is Floating Ball Valve

 

 

A floating ball valve is a type of valve that uses a ball to control the flow of fluid through a pipeline. The ball floats in the fluid, which allows it to move freely and maintain contact with the sealing surface. Floating ball valves are commonly used in high-pressure applications due to their ability to handle high pressure drops and their reliability in sealing. This design allows for increased flexibility and lower operating torque compared to other types of ball valves. They are also used in a variety of industries, including oil and gas, petrochemical, and water treatment.

 

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  • Cast Steel Floating Ball Valve

    Cast Steel Floating Ball Valve

    Floating valve is meant with ball isn't fixed. Under flow pressure, the ball floats to downstream slightly and get in touch with with body seat surface to make a decent seal.
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  • Pneumatic Explosion Proof Ball Valve

    Pneumatic Explosion Proof Ball Valve

    Unlike electrically actuated valves installed in hazardous zones, this system uses compressed air as the primary driving force, eliminating ignition risks at the valve location while maintaining
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  • Pneumatic High Temperature Ball Valve

    Pneumatic High Temperature Ball Valve

    The Pneumatic High Temperature Ball Valve is engineered for severe service applications where conventional soft-seated valves fail due to thermal degradation, seat deformation, or fugitive emissions.
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  • Pneumatic Cryogenic Ball Valve

    Pneumatic Cryogenic Ball Valve

    Designed for reliable automated isolation of ultra-low-temperature media, our Pneumatic Cryogenic Ball Valves are engineered in accordance with BS 6364 to deliver dependable shut-off performance at
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  • Pneumatic Wafer Ball Valve

    Pneumatic Wafer Ball Valve

    Compared with conventional flanged ball valves, the wafer design significantly reduces installation space, assembly weight, and overall system cost while maintaining dependable shut-off performance.
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  • Pneumatic Flanged Ball Valve

    Pneumatic Flanged Ball Valve

    Industrial automation requires valves that deliver consistent performance under demanding operating conditions. As an experienced industrial valve manufacturer, we design and manufacture pneumatic
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  • Pneumatic Trunnion Mounted Ball Valve

    Pneumatic Trunnion Mounted Ball Valve

    The Pneumatic Trunnion Mounted Ball Valve is designed for high-pressure, large-diameter, and continuous-duty pipeline systems where stable sealing performance, predictable torque behavior, and
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  • Pneumatic Carbon Steel Ball Valve

    Pneumatic Carbon Steel Ball Valve

    The Pneumatic Carbon Steel Ball Valve is engineered for industrial pipelines requiring rapid, repeatable, and automated shut-off performance. By pairing a high-strength carbon steel valve body with a
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  • High Pressure Carbon Steel Ball Valve

    High Pressure Carbon Steel Ball Valve

    The High-Pressure Carbon Steel Ball Valve is designed for mission-critical pipeline isolation systems where zero-leak integrity, pressure stability, and long service life are essential.
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  • Flanged Carbon Steel Ball Valve

    Flanged Carbon Steel Ball Valve

    The flanged carbon steel ball valve is engineered for high-integrity industrial pipeline systems requiring absolute shut-off reliability, long-cycle durability, and verified pressure safety
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  • 3-Piece Carbon Steel Ball Valve

    3-Piece Carbon Steel Ball Valve

    Unlike one-piece or two-piece designs, the three-piece swing-out structure allows the central body section to be removed without disconnecting the pipeline ends. This design significantly reduces
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  • 2-Piece Carbon Steel Ball Valve

    2-Piece Carbon Steel Ball Valve

    The 2-piece carbon steel ball valve is designed for industrial pipeline systems requiring reliable shut-off performance, mechanical strength, and maintainable construction under continuous operating
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Benefits of Floating Ball Valve
 

Sealing integrity and reduced leakage

Floating Ball Valves are designed to achieve superior sealing integrity. The floating design ensures that the ball is free to move within the valve, allowing it to pivot and maintain contact with the sealing surface. This characteristic minimizes the risk of leakage, ensuring a secure and dependable fluid control system.

 

Low operating torque

One of the key advantages of Floating Ball Valves lies in their low operating torque. This feature makes them an ideal choice for applications where quick and efficient valve operation is essential. The reduced torque not only enhances operational efficiency but also prolongs the life of the valve, reducing wear and tear.

 

Minimal maintenance requirements

The design simplicity of Floating Ball Valves contributes to their low maintenance requirements. With fewer moving parts and a straightforward structure, these valves are easier to inspect, maintain, and troubleshoot, reducing downtime and overall operational costs.

 

Quick and easy operation

The floating ball design enables swift and easy operation of the valve. This characteristic is particularly beneficial in applications where rapid response and precise control of fluid flow are critical. The efficiency in operation makes Floating Ball Valves an indispensable choice in dynamic industrial environments.

 

Minimal pressure drop

Floating Ball Valves are engineered to minimize pressure drop across the valve. This characteristic is crucial in applications where maintaining consistent pressure levels is imperative for optimal performance. The reduced pressure drop contributes to energy efficiency and overall system stability.

 

Enhanced durability and longevity

Floating ball valves are made of high-quality materials for superior durability. The rugged design combined with resistance to corrosion and wear ensures a long service life, making it a cost-effective investment for industries looking for reliable, long-term solutions.

Types of Floating Ball Valve

One piece floating ball valve

Features a single forged or cast steel valve body that houses all moving valve components. These one-piece floating ball valves are the most compact and least expensive, so are used in smaller applications. Since they cannot be opened for cleaning or repair, they are primarily used for pipes carrying gases and generally require little maintenance.

Two-piece floating ball valve

There are two housing parts cast or forged together, one of which is always larger than the other. The larger unit houses moving parts and, unlike the single variety, it can be opened for repair, maintenance or cleaning, but it must be disconnected from the pipe to do so.

Three-piece floating ball valve

Although they tend to be larger, there are also smaller sizes of three-piece floating ball valves designed for use in compact situations. The sections are forged against each other, with the larger half of the valve body housing all the moving valve parts. It is the easiest to maintain, repair, or clean because it does not require removal from the pipe.

 

Application of Floating Ball Valve

Oil and gas industry

Floating ball valves are widely used in the oil and gas industry for controlling the flow of oil, gas, and other fluids in pipelines, refineries, and storage tanks. They are preferred over other types of valves due to their high reliability, tight shutoff, and low maintenance requirements.

Chemical industry

Floating ball valves are used in the chemical industry for handling a variety of corrosive, toxic, and high-temperature fluids. They are designed to withstand harsh chemical environments and can be made from a range of materials such as stainless steel, alloys and titanium.

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Water treatment plants

Floating ball valves are used in water treatment plants for regulating the flow of water and other liquids. They are particularly useful in applications where precise control of flow rates is required, such as in the treatment of drinking water.

Power plants

Floating ball valves are widely used in power plants for controlling the flow of steam, water, and other fluids. They are designed to withstand high pressure and temperature, making them ideal for use in steam and gas turbine applications.

Maintenance Tips for Floating Ball Valve
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01

Inspect the valve regularly

Ensure that the floating ball valve is inspected regularly to detect any visible signs of wear and tear like leaks, erosion, or corrosion. It's recommended to inspect the valve at least once every six months.

02

Clean the valve

Dirt, debris, and other contaminants can accumulate over time and cause valve failure, making it essential to clean the valve regularly. Use a mild detergent and gently wipe the valve's internal and external parts of any debris and dirt.

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03

Use suitable materials

Use suitable materials such as non-corrosive seals, gaskets, and fasteners that can withstand the chemical and temperature conditions of the medium passing through the valve.

04

Check the seal

Check the valve seal for potential damage, wear, or misalignment frequently. A worn or damaged seal may cause a gas or fluid leak, leading to potential safety hazards.

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Key Differences Between Floating Ball Valves And Trunnion Ball Valves

 

The main difference is in the design of the ball. In a floating ball valve, the ball is free to float within the body of the valve. This allows the ball to align with the seat, creating a tight seal. In a trunnion ball valve, the ball is attached to a trunnion, which is a short, cylindrical piece of metal. The trunnion supports the ball as a fulcrum to pivot on. Floating ball valves have a lower risk of leakage and are easier to maintain than trunnion ball valves.

What Are The Pressure And Temperature Limitations of a Floating Ball Valve?

 

The pressure limitation of a floating ball valve is mainly determined by its class rating. The class rating indicates the maximum pressure the valve can withstand without failure. For example, a class 150 floating ball valve can handle a maximum pressure of 150 psi, while a class 600 floating ball valve can handle a maximum pressure of 600 psi. The temperature limitation of a floating ball valve depends on the material used for the valve body, stem, and ball. Materials such as carbon steel, stainless steel, and bronze can handle a wide range of temperatures, but they have their limits. For example, a carbon steel floating ball valve may have a maximum temperature limitation of around 400°F, while a stainless steel floating ball valve may have a maximum temperature limitation of around 800°F.

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Components of Floating Ball Valve
 

 

 

1

Valve body: the chamber in which the valve mechanism is encased. Ball valves are most commonly made of iron, steel, brass, bronze, or PVC.

2

Ball: a sphere that pivots with a flow path through the centre. It connects to the valve body via the stem (or shaft).

3

Bore or port: the hollowed out centre of the ball that allows flow.

4

Packing: flexible seals that fit around the stem to prevent media from escaping from the valve body.

5

Seat: a round disc that forms a seal between the valve body and the ball.

6

Stem: the shaft that anchors the ball and connects it to the actuator or operating lever

7

Actuator: an external device that is used to rotate the stem of the valve. This can be a lever, gear, electric actuator, or a pneumatic/hydraulic actuator.

Working Principle of Floating Ball Valve

 

A floating ball valve works by using a ball-shaped valve element that is suspended or "floating" inside the valve body. The ball has a hole or bore through it that allows fluid or gas to flow through the valve when the ball is in the open position. When the valve is closed, the ball rotates so that the bore is perpendicular to the flow, blocking the flow of fluid or gas. To operate the valve, a handle or lever is turned, which is connected to a stem that is attached to the ball. As the handle is turned, the stem and ball rotate, either opening or closing the flow of fluid or gas. The ball element of a floating ball valve is not fixed in place, but is free to move. This allows the ball to move slightly to accommodate changes in fluid pressure, which helps to prevent leaks and improve sealing. The floating design also allows for a tight seal even when there are small amounts of dirt or debris in the valve.

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Why Floating Ball Valve

 

A floating ball valve uses a rotating ball and a stem that provide on/off flow control. When the valve is positioned where the bore is aligned in the same direction as the pipeline, it is in the open position, and fluid can pass downstream. When the ball is rotated 90-degree, the bore becomes perpendicular to the flow path, meaning the floating ball valve is closed, and fluid cannot pass downstream. Advantages of a floating ball valve include Fast shut off, only a 90-degree turn required to close the valve. The opened or closed state of the valve can be easily detected by position of the handle.

Material of Floating Ball Valve

 

Floating ball valves are typically made from materials such as brass, bronze, cast iron, ductile iron, carbon steel, stainless steel, and other alloys. The material used for the valve body and ball depends on the specific application, pressure, temperature, and medium being controlled by the valve. valves used in highly corrosive and abrasive environments may be made from materials that are resistant to corrosion and wear, such as stainless steel or ceramic.

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Can Floating Ball Valves Be Used For Abrasive or Corrosive Media?

 

 

Floating ball valves can be constructed from materials that are resistant to abrasion and corrosion, such as stainless steel, bronze, or exotic alloys. Additionally, some floating ball valves can be coated or lined with materials that provide additional protection against abrasive or corrosive fluids.

 

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How Are Floating Ball Valves Tested For Quality and Performance?

Floating ball valves undergo rigorous testing to ensure quality and performance. This includes hydrostatic testing to verify the valve body's strength and pressure resistance, seat and seal testing to verify tightness and leakage prevention, and torque testing to verify the actuator's efficiency and functionality. The valves are also subjected to performance testing to verify the flow rate, operating torque, and other functional parameters.

 

How Do You Select The Right Size And Class For a Floating Ball Valve

 

 

The choice of size and class for a floating ball valve depends on several factors, including the flow rate, pressure, temperature, and application. The valve size should match the piping system's size, and the valve class should be selected based on the maximum allowable pressure and temperature for the application.

 

What Type of Piping System is a Floating Ball Valve Suitable For?

 

A floating ball valve is suitable for a variety of piping systems, including those that carry liquids or gases under high pressure or high temperature. This type of valve design allows the ball to move freely within the valve body, which ensures a tight seal and minimizes the risk of leakage. This makes floating ball valves ideal for use in industries such as oil and gas, chemical processing, and power generation, where reliability and safety are paramount. Floating ball valves can accommodate a range of piping materials and sizes, making them a versatile choice for many different applications.

 

What Are The Different Types of Seats Used in a Floating Ball Valve?

 

 

There are typically two types of seats used in a floating ball valve: soft seats and metal seats. Soft seats are made of materials such as PTFE, elastomers, or other polymers, and provide excellent sealing capabilities and resistance to chemical corrosion. Metal seats are made of materials such as stainless steel or other alloys, and are used in applications with higher temperatures and pressures. Metal seats also have the advantage of being more durable and resistant to wear and tear than soft seats. The choice of seat material ultimately depends on the specific application requirements and the type of fluid being transported through the valve.

 

How is The Flow Rate Controlled in a Floating Ball Valve?

 

 

The flow rate in a floating ball valve is controlled by the position of the ball in relation to the valve body. The ball inside the valve is held in place by two seats, one on the upstream side and the other on the downstream side. As the pressure drops, the ball moves away from the downstream seat, creating a gap between the ball and the downstream seat. The size of this gap determines the flow rate of the fluid. By adjusting the position of the ball with a handle or actuator, the flow rate can be controlled. When the handle or actuator is rotated, the ball spins and moves closer or farther away from the downstream seat, changing the size of the gap and adjusting the flow rate accordingly.

 

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FAQ

 

Q: What is the purpose of a floating ball valve?

A: The floating ball valve can stop, distribute and alter the direction liquids flow within a pipeline, with its main features being the sealing design of the seats, which automatically relieve pressure, reliably sealing when flows reverse and acting as a locking device.

Q: What is difference between floating ball valve and trunnion ball valve?

A: Floating ball valves have a lower risk of leakage and are easier to maintain than trunnion ball valves. They are also less expensive. On the other hand, trunnion ball valves have superior flow characteristics and can handle higher pressures.

Q: What are the advantages of using a floating ball valve?

A: Floating ball valves have several advantages, including a low torque requirement for operation, a quick response time, and a compact design. They are also relatively easy to maintain and can be used in a wide range of applications.

Q: What are the different types of floating ball valves?

A: There are two main types of floating ball valves: two-piece and three-piece. Two-piece floating ball valves have a two-piece body design, with the ball and stem attached to one half of the body. Three-piece floating ball valves have a three-piece body design, with the ball and stem attached to a separate piece that can be removed for maintenance.

Q: How do you select the right floating ball valve for a specific application?

A: The selection of the right floating ball valve depends on several factors, such as the pressure rating, temperature range, fluid type, and flow rate of the application. Other factors to consider include the valve size, connection type, and end connections. Consulting with a valve manufacturer or supplier can help ensure that the right valve is selected for the specific application.

Q: What is the maximum pressure rating for floating ball valves?

A: The maximum pressure rating for floating ball valves varies depending on the design and construction of the valve, as well as the materials used. Generally, floating ball valves can handle pressures ranging from class #150 to #2500, but some designs may be able to handle even higher pressures.

Q: Can floating ball valves be used for both on/off and throttling applications?

A: Yes, floating ball valves can be used for both on/off and throttling applications. However, their design is optimised for on/off applications, and they may not be as effective as globe valves or other specialised valves for precise throttling control.

Q: What is the typical lifespan of a floating ball valve?

A: The lifespan of a floating ball valve depends on several factors, such as the application, frequency of use, and maintenance practices. Generally, floating ball valves are designed to last for many years, with a lifespan of up to 20-30 years or more in some cases.

Q: Can floating ball valves be automated?

A: Yes, floating ball valves can be automated using actuators. This allows for remote operation and control of the valve, as well as integration with control systems for monitoring and automation.

Q: What are some common applications of floating ball valves?

A: Floating ball valves are commonly used in a variety of industries and applications, including oil and gas, petrochemicals, water treatment, HVAC systems, and more. They are particularly well-suited for applications where low torque and quick response times are needed, and where space and weight constraints are a concern.

Q: How do you maintain and repair a floating ball valve?

A: Maintenance and repair of a floating ball valve involves regular inspection, cleaning, and lubrication of the valve components. Depending on the specific design and construction of the valve, repairs may involve replacing worn or damaged seats, seals, or other components. In some cases, the entire valve may need to be replaced.

Q: What is the function of the seat in a floating ball valve?

A: The seat in a floating ball valve provides a seal around the ball to prevent fluid from leaking past the valve. The seat is typically made of a soft material, such as Teflon or rubber, that conforms to the shape of the ball and provides a tight seal.

Q: What is the difference between a manual and automated floating ball valve?

A: Manual floating ball valves are operated by hand using a lever or handle, while automated floating ball valves are operated using an actuator. Actuators can be pneumatic, electric, or hydraulic, and can be used to open and close the valve remotely, or to control the valve position based on signals from a control system.

Q: What factors should be considered when selecting a floating ball valve?

A: The factors to be considered when selecting a floating ball valve include the material of the valve, the size of the valve, the pressure and temperature ratings, the flow capacity, and the end connections. Additionally, the type of fluid being handled and the application should also be considered.
 

Q: How do you install a floating ball valve?

A: The installation of a floating ball valve varies depending on the specific valve and the application. However, in general, it involves attaching the valve to the pipeline using appropriate fittings.

Q: Can floating ball valves be used for high-pressure applications?

A: Yes, floating ball valves can be designed to handle high-pressure applications, with pressure ratings typically ranging from 150 to 1500 psi.

Q: What are some common problems with floating ball valves?

A: Leakage due to worn seals or damaged valve components. Seizing of the valve due to lack of lubrication or buildup of debris. Corrosion of the valve body and other components.

Q: How does a floating ball valve work?

A: When the valve is closed, the ball is forced against the downstream seat by the pressure of the fluid. When the valve is opened, the pressure of the fluid pushes the ball off the downstream seat and allows the fluid to flow through the hole in the ball.

Q: What is the typical temperature and pressure range for a floating ball valve?

A: The temperature and pressure range for a floating ball valve will depend on the specific design and material used. However, most floating ball valves can handle temperatures ranging from -20°C to 200°C (-4°F to 392°F) and pressures up to 10,000 psi.

Q: What types of fluids can a floating ball valve control?

A: A floating ball valve can control a variety of fluids including liquids, gases, and slurries.

 

As one of the leading floating ball valve manufacturers and suppliers in China, we warmly welcome you to wholesale high-grade floating ball valve for sale here from our factory. All our products are with high quality and competitive price.

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