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Product Date:
Size: 1/2"-8"
Class: 150LB-2500LB
Floating Ball, RB&FB
Design standard:
Design: ASME B16.34/API 6D
Face to Face: ASME B16.10 /API 6D
Flange: ASME B16.5/ ASME B16.47A
BW END: ASME B16.25
Test: API 6D
Anti-Fire: API 607/API 6FA
Acid environment: NACE MR 0175
Advantages:
loss of pressure is minimal
Open and close easy.
leak tightness good.
Compact design for the valve
The valves with water test.
The ball valve with floating ball. Under the action of the valve working medium pressure, on the sealing surface of the ball can generate a certain displacement and press of the outlet section to make sure the sealing at the outlet end.
In a floating valve, the ball is suspended in the flow fluid and is keep in position by the compression with two elastomeric seats against it. at the top of the ball the shaft is connected and allows the ball with a quarter turn movement (90 degrees) by the switch from an open to a closed position.
When gets pressed a load is applied to the ball against its seat with the shaft is moving. light weight and economic design are suits bore sizes up to 10", above this size, the seats of the ball valve would not be able to withstand heavier the valve would not operate safely and efficiently.
Floating valves
A bi-directional shut-off of the flow is allowed (as the trunnion type).
Application:
Some Features of Our 2-Piece Floating Ball Valve
2- Piece Body Construction
This ball valve comes in two separate pieces or parts, joined together to make up the valve. The first piece holds the main body and one end connection. The second piece fits inside the first piece. It holds together the valve's trim or inner valve components and has the valve's second end connection.
Full Bore & Reduced Bore Options
The 2-piece ball valve is available in both full bore or reduced bore constructions. Full bore or full port construction means that the pipe diameter at the inlet and outlet is the same as the diameter of the ball valve. It allows fluid or media to flow straight through the ball without being reduced or narrowed. Reduced bore construction, also called a standard port, also has a straight but restricted flow path. The outlet and inlet of the valve are the same diameters as the pipeline, but the inner component (the ball) has a smaller flow opening/bore. As a result, the reduced ball diameter produces a drop in pressure as the media passes through the ball.
Blow-Out-Proof Stem
The 2-piece ball valve comes with a pressure-resistant stem design. This stem has a collar on its lower part. The collar holds the stem inside the valve, preventing it from being blown out by excessive cycle pressures.
Multiple End Connections
A 2-piece ball valve is available in both threaded and flanged end connections, making them versatile for use in a wide range of process systems.
Extensive Pressure and Temperature Capabilities
A 2-piece ball valve can handle Class 150/300 and 1000 PSI pressure ratings for the flanged and threaded end connections with soft PTFE seats, respectively. They are flexible for use in high or low-pressure cycles with temperature ratings of between -20-degrees F to 450-degrees F. Metal seated 2-piece floating ball valves have higher temperature capabilities and can handle temperatures of up to 1000 degrees F while also reaching up to 2000 PSI ratings. 2-piece trunnion ball valves have different pressure ratings of Class 150-2500 pressure rating. With soft seats, a trunnion ball valve will handle moderate temperatures of up to about 500 degrees F, while metal seated 2-piece trunnion ball valves can withstand higher temperatures of up to 1000 degrees F.
ISO Approved
The 2-piece ball valve dimensions are up to ISO, ASME, JIS, and DIN standards.
Advantages of Using Two-Piece Ball Valve
- It offers minimal fluid resistance whose coefficient is equal to the same length of a pipe.
- It is lightweight, occupies less space, and its design provides good sealing performance.
- Its structure is convenient to repair and maintain due to its simple design and movable ring.
- Since the valve seat and sealing are isolated from the medium, there is no corrosion on the sealing surface.
- Its medium does not erode the piece quickly because its sealing cover and seat are isolated.
- It requires only a 90 degrees turn to open or close, thus making it convenient for remote control.
A two-piece ball valve is commonly used in various applications with any media because of the ease of maintenance in a wide range of industries. A few industries employing a two-piece ball valve in their applications include food, manufacturing, and automotive. Its working principle is to block the valve or unblock it by rotating it.
Floating Ball Valve Classification
One-Piece Floating Ball Valve
One-piece ball valve and flange gate valve belong to the same type of valve, being the closing member is the main difference between them. Obviously, the one-piece ball valve uses a sphere that rotates around the center line of the body, while the flange gate valve opens a type of gate by lifting the blocking structure when the handle is rotated. The ball valve is mainly used in the pipeline to cut off, distribute, and change the flow direction of the medium. Also known as integral ball valve, it is a new type of valve which has been widely used in recent years.
Two-Piece Floating Ball Valve
The two-piece floating ball valve takes its name from the fact that it is made of two parts called the left and the right body which are connected to each other through threads and bolts or by welding them. This type of valve is suitable for different working conditions such as high temperature and high pressure.
Three-Piece Floating Ball Valve
The three-piece floating ball valve refers to a floating ball valve whose body is composed of three parts from left to right. The parts are usually a body and two bonnets. Similar to the case of two-piece floating ball valves, the end caps are usually connected through threads and bolts, by welding them or flanged to the pipe.
Components of Floating Ball Valves
The materials used in a floating ball valve are carefully chosen for strength, corrosion resistance, and compatibility with the specific fluid it will control. Typical components include:
Valve Body
The valve body is the main housing of the valve and is usually made from materials such as carbon steel, stainless steel, alloy steel, or cast iron. The choice of material depends on factors such as pressure rating, temperature range, and chemical compatibility with the fluid.
Ball
The ball, the heart of the valve, directly controls fluid flow. It's typically made from durable, corrosion-resistant metals like stainless steel, brass, or bronze. Coatings or surface treatments may be added to enhance wear resistance and sealing performance further.
Seats
The valve seats provide the sealing surfaces for the ball when the valve closes. They're typically made from resilient, wear-resistant materials like PTFE (polytetrafluoroethylene), PEEK (polyetheretherketone), or reinforced elastomers such as Viton or EPDM. These materials ensure a tight seal and resist chemical attack.
Stem
The stem connects the actuator (lever or other control mechanism) to the ball, transferring the rotational motion needed to open or close the valve. It's made from corrosion-resistant alloys to ensure reliable operation in harsh environments.
Seals and Packing
Seals and packing materials are used to prevent leakage around the stem and other moving parts of the valve. These components are often made from elastomers such as Nitrile, Viton, or EPDM, as well as PTFE-based materials, depending on the application requirements.
Actuator
The actuator controls the valve's opening and closing. It can be manual (e.g., handle, lever) or automated (e.g., gearbox, pneumatic or electric motor). The actuator type depends on the desired level of control and the specific application.
How Do Floating Ball Valves Work?
Floating ball valves are operated by a shaft, or stem, attached to the top of the ball that turns it 90 degrees (a quarter turn). As the ball rotates, the port is covered or uncovered by the wall of the valve body, either releasing or halting the flow of media. The stem is attached loosely enough to the ball that, as the ball rotates on its axis, the pressure of the flow pushes the ball against its downstream seat, creating a tight seal. For this reason, floating ball valves may not seal as effectively in very low pressure applications after a certain amount of seat wear has occurred. This is because there may not be enough media pressure to force the ball against the downstream seat to create a tight seal. However, in most applications downstream pressure is sufficient to maintain a tight seal long after the seats have begun to wear.
Frequently Asked Questions About 2 Piece Floating Ball Valve
- What is the use of 2 piece ball valve?
Two-piece ball valves provide bidirectional flow shutoff and are available in full port configurations for applications where the flow rate is critical. They are compact, reliable, and economical, if slightly more expensive to replace than 1-piece ball valves.
- What is the purpose of a floating ball valve?
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.
- What is the difference between 2 piece and 3 piece ball valves?
In short, the main difference between 1, 2, and 3-piece ball valves is their body design. A one-piece ball valve has only one body portion. Two-piece ball valves have two body components threaded together or bolted together. Three-piece valves, on the other hand, have three independent components.
- What does a floating ball valve use for?
A general rule of thumb is floating ball valves are best for low- to medium-pressure scenarios, and trunnion ball valves are best for high-pressure projects. However, trunnion valves are the most versatile, so they will work in most cases.
- What material is a floating ball valve?
Valves have been designed for use with various combinations of materials such as Carbon Steel, Low Carbon Steel, Special Alloy, Stainless Steel, Monel, and Inconel.
- What is the best material for a ball valve?
Stainless steel ball valves are the most durable option. These valves offer the most robust offering of compatible chemicals. The chemical makeup of stainless steel offers natural corrosion resistance.
- What is the function of the ball float valve?
Floating ball valve function: control the water level of the pool or water tank not to exceed a certain set value, and the valve can only be opened within a set time period.
- What are trunnion ball valves?
A trunnion ball valve is a type of valve that uses a ball held in place by two trunnions or posts. This design allows the ball to rotate in place, allowing the valve to open or close. This ball valve is a specialized type of valve that is used in a variety of industries. These valves are designed to provide superior performance in critical applications. Trunnion ball valves are available in various sizes and pressure ratings to suit the needs of different industries.
Some industries that commonly use trunnion ball valves include the oil and gas industry, the power generation industry, and the chemical processing industry. These valves are also widely used in applications where there is a need for a high-quality valve that can withstand extreme temperatures and pressures.
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