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What is Trunnion Ball Valve
A trunnion ball valve comes with a stem that connects the ball to the exterior actuator lever. There is a hollow ball in the valve, which is rotated 90 degrees when you move the lever to either block or open the flow. Unlike a floating ball valve where the ball is floating without any support, the ball in the trunnion valve is connected to the stem.When you move the handle, the ball rotates. If the hollow side is in front of the valve, the fluids flow easily. When you turn the lever, the stem moves, thereby rotating the ball, which blocks the fluid movement.
Rich experience
The company' s founder team graduated from mechanical and electrical automation majors and has been engaged in the valve industry for more than 20 years. It is committed to providing customers with a complete set of fluid control solutions. It is a company integrating scientific research and development, A large-scale valve enterprise integrating testing and testing, manufacturing and sales.
Wide product range
The company mainly produces API 6D pipeline ball valves, gate valves, globe valves, check valves, plug valves and API 609 series butterfly valves in 6 categories, with more than 1,000 specifications and varieties. Products widely cover petrochemical, coal chemical, nuclear power, LNG, marine, aerospace, metallurgy, papermaking and other industries.
Complete qualifications
The company has a complete international standardized management system, adopts the world's top precision casting technology and modern intelligent electronic detection system, and uses advanced SAP resource management, strip storage management system and ERP system to effectively manage the factory.
High standard products
After years of hard work and development, it has become a key backbone enterprise in the valve industry. It specializes in improving the innovation and manufacturing capabilities of special valves in harsh industrial environments. High-quality products and fast after-sales service have won praise and trust from customers at home and abroad.
Less Torque
A Trunnion, or lower stem, is utilized in a Trunnion ball valve to support the ball inside the valve body. The trunnion stem prevents unreasonable friction between the ball and seats by absorbing the thrust from the line pressure. As a result, even at the maximum working pressure, operational torque is kept to a minimum.
No Size Limit
Trunnion ball valves come in a wide range of sizes. Large-sized balls can fit into two-piece and three-piece ball valves, making them ideal for bigger applications. Tinier, low-pressure applications can make use of one-unit Trunnion ball valves. These ball valves are appropriate for important applications because they can deal with high-pressure operations.
Spring-Loaded Seats
Trunnion ball valves have spring-loaded seats. In addition, these Trunnion mounted ball valves are efficient in low and high-pressure conditions. The spring-loaded seats function for high-pressure applications as well as little or no pressure circumstances, forming a seal.
Customizable Features
They retain a wide range of value-added characteristics. To make the seats and the ball more durable and ensure a tight seal, injections might be utilized. Corrosion-resistant nuts and bearings can be utilized to extend the valve’s life. It is possible to equip massive valves with lifting lugs.
Self Relief Pressure
The seat is originally electrified by the springs in Trunnion ball valves with cavity relief. However, the primary sealing force is provided by the line pressure disparity between the seat and the cavity. In order for the pressure to pile up and to plug the valve at downward pressure, the springs initiate a seal.
Ease of Operation
The Trunnion and stem of the valve are designed to withstand any additional pressure. It indicates that a smaller actuator and lower working torque are required for the valve. As a result, costs are decreased, and using the valve is simplified. Three-piece Trunnion ball valves are also simple to fix, maintain, replace, and clean because only a single piece needs to be taken off to get to the valve’s functional components.
Application Requirements: Determine the type of fluid (gas, liquid, corrosive, etc.) the valve will handle, the temperature range, and the pressure it will be subjected to. These parameters are crucial in selecting the appropriate material of construction and design.
Size and Flow Rate: The size of the valve should correspond with the pipe diameter and the flow rate required for the application. Ensure the valve has a flow coefficient (Cv) that matches the system's flow requirements.
Material Compatibility: Choose a material that is compatible with the process fluid to avoid corrosion or degradation. Common materials for trunnion ball valves include stainless steel, carbon steel, brass, and PVC.Select the valve body style (weld end, flanged, threaded, etc.) based on the connection type in your system. The end connections must match the piping system for proper installation.
Seating Type: Depending on the application, you might need a soft seat (such as PTFE or elastomer) for low leakage or a metal seat for high-temperature or aggressive media. Consider whether the seat is integral to the body or removable for maintenance.
Maintenance Accessibility: Ensure that the valve is designed for easy maintenance and that replacement parts are readily available. This can significantly extend the valve's service life and reduce downtime.Verify the trunnion design supports the necessary pressure rating and provides the desired level of support for the ball, ensuring reliable operation under the given conditions.
Regularly check for loose screws, damaged parts or broken seams and replace damaged parts if necessary. When disassembling or assembling, please follow the instruction manual carefully to avoid unnecessary damage.
Cast Steel Trunnion Ball Valve
Cast steel trunnion ball valves are widely used in various industries due to their excellent characteristics, such as durability, easy maintenance, and high efficiency. The valve is designed to regulate and control the flow of fluids of various types, including gas, oil, and water, in pipelines. As a trusted manufacturer in China, our cast steel trunnion ball valves are some of the most reliable and robust fluid control systems on the market.
Metal Seal Trunnion Ball Valve
As a manufacturer located in China, we take pride in introducing our latest innovation - the Metal Seal Trunnion Ball Valve. This revolutionary product is the ultimate solution for precise and reliable flow control. Designed to deliver exceptional performance, our Metal Seal Trunnion Ball Valve is perfect for a wide range of industrial applications. With its advanced features and unmatched durability, our product serves as the best option for merchants seeking high-quality industrial valves.
Fully Welded Trunnion Ball Valve
Our fully welded trunnion ball valve is an excellent adaptation of our traditional ball valve, designed to offer utmost stability and durability while handling high-pressure applications in the oil and gas industry. Our product is tailored to suit the needs of merchants across the globe who seek top-quality solutions for their oil and gas operations.In this product introduction, we will dive deep into the benefits and features of our Fully Welded Trunnion Ball Valve, including its unique features, premium construction, and how it could improve your operations.
Forged Steel Trunnion Ball Valve
As a renowned manufacturer from China, we take pride in introducing our premium quality Forged Steel Trunnion Ball Valve to our respected global customers. Our company specializes in producing high-performance industrial valves and fittings that are capable of meeting diverse industrial demands.Our Forged Steel Trunnion Ball Valve is a unique product that is designed to provide an effective means of flow control in pipeline systems. This valve is made from high-grade forged steel, which gives it exceptional strength, durability, and longevity. It is widely used in the oil and gas, petrochemical, chemical, and power generation industries.
High Pressure Rating
Trunnion-mounted ball valves are designed to handle higher pressures compared to floating ball valves. This is because the trunnions provide additional support to the ball, preventing it from being pushed out of its seat under high differential pressures.
Enhanced Stability
The presence of trunnions on either side of the ball provides increased stability and reduces the lateral movement of the ball within the valve body. This helps in maintaining a tight seal even under varying pressures and temperatures.
Reduced Torque Requirements
Due to the enhanced stability, trunnion ball valves typically require less torque to operate, making them easier to use and reducing wear and tear on actuators and manual operators.
Better Sealing Performance
The seating mechanism in trunnion ball valves is often equipped with metal seats that can withstand higher temperatures and pressures, resulting in a superior seal that minimizes leaks.
Improved Durability
The robust design of trunnion ball valves makes them more durable and capable of enduring harsher conditions, such as those found in oil and gas applications, chemical processing, and power generation.
Lower Operational Costs
With reduced torque requirements and improved durability, trunnion ball valves can lead to lower operational costs over their lifespan due to less frequent maintenance and longer service intervals.
Components of Trunnion Ball Valve
Body
The ball valve's body is the casing that supports the inside of the valve and keeps it in place. Based on the function it will receive, the substance for this design may be constructed of various products. Carbon steel, stainless steel, duplex, low-temperature carbon steel, Inconel, and super duplex are a few of the materials that are frequently utilized.
Ball
It rotates through a disc with a sphere-like form to halt or start flow in a steady rotation. On one end, it is attached to the Trunnion, and on the other, to the stem. While it takes turns, the ball is secured in place. The seats of the Trunnion ball valve frequently get into touch with this ball, lowering the torque.
Seat
The Trunnion ball valve's seat is a design element that encircles the ball. The seats hold the ball firmly in place when the actuator is switched on, preventing access. There are two varieties: soft and metal, which causes it to move in the ball's general direction.
Trunnion
The trunnion ball valve has an additional shaft that holds the ball in place from below, which is called Trunnion. Its purpose is to maintain the ball's tight attachment. In some Trunnion mounted ball valves, the Trunnion is an attachment of the spherical ball, and the rest of the time, it is connected to the spherical ball disc through welded joints.
Stem
The ball and the actuator are connected by the trunnion ball valve's stem. It is attached to the ball by an extra shaft, which aids in keeping the ball firmly in position. Additionally, it controls how the ball moves. Trunnion-mounted ball valves retain stronger anti-blowout stems, which allows them to withstand high pressures and temperatures without suffering any harm.
Disk
A perforated, solid ball is the shape of the disc in a Trunnion ball valve. The ball is attached to the stem on one side, and on the other, to the Trunnion. The ball or disc in a Trunnion ball valve is stabilized while it revolves. Because the seats are always in touch with the ball, torque is decreased.
Actuator
A trunnion ball valve's actuator is utilized to open or shut down the valve. Based on the application and medium, like air-operated ball valves, numerous types of actuators are utilized in ball valves. On a valve, typical actuators include bare stems, hand levers, pneumatic actuators, gears, and hydraulic actuators.
Injection
In the seat and stem region, injection fittings are created. Grease can be inserted using a sealant injection fitting when sealing is weakened, and leakage starts. A partial seal is created by the injected sealant to halt additional leaking. The sealant injection fittings are only to be utilized in emergencies.
Oil and gas sectors
Trunnion ball valves are ideal for a variety of applications in the oil and gas sectors. Gas feed lines, industrial gas processing plants, field gas plants, oil refinery feedstock lines, and crude oil plants are a few models of oil and gas businesses that utilize Trunnion-mounted ball valves.
01
Chemical industries
Trunnion ball valves are ideal for a range of chemical sectors because they provide exceptional safety, reliability, and sealing capacities.
02
Pipeline industries
Trunnion ball valves are extremely useful in the pipeline business since they can deal with a variety of applications, including handling gases, slurries, and fluids.
03
Power Industries
Trunnion ball valves can be utilized in a wide range of power industry applications, including those involving turbines, generators, skids, and compressors.
04
Hydrocarbon industries
Trunnion-mounted ball valves are quite common in the hydrocarbon sectors because they help make the processing of hydrocarbons easier.
05
Regular Inspections
Conduct visual inspections regularly to check for signs of wear, corrosion, or damage. Pay attention to the body, bonnet, stem, trunnions, and seals.Periodically perform leak tests on both the bonnet and body seals to detect any minor leaks that could become serious issues.
Lubrication
If the valve is manually operated, apply lubricant to the stem to reduce friction and wear. Ensure the lubricant is compatible with the valve material and process media.
Cleaning
Keep the valve clean by removing any accumulated debris or deposits on the outside and inside surfaces. Use appropriate solvents or cleaning agents that do not react with the valve material or the process fluid.
Actuator Maintenance
For valves with actuators, follow the manufacturer's recommendations for maintenance. This may include checking torque settings, lubrication, gear alignment, and electrical components for the actuator.
Replacement of Seals and Parts
Replace any worn or damaged O-rings, seats, and other sealing elements according to the manufacturer's schedule or as needed based on inspection findings.Perform hydrostatic or pneumatic pressure testing at regular intervals to ensure the integrity of the valve's pressure-retaining capabilities.
Follow Manufacturer Guidelines
Always refer to the manufacturer's maintenance manual for specific instructions and recommendations for your particular valve model.Before performing any maintenance, ensure that the valve is isolated and depressurized to prevent accidental release of process media and to protect maintenance personnel from hazardous conditions.
SUNAY is a professional manufacturer of valves. Headquartered in Anfeng Industrial Zone, Yongjia, Zhejiang. The company was established in 2010 with a registered capital of 10.8 million yuan and has three holding manufacturing companies. The company's founder team graduated from mechanical and electrical automation majors and has been engaged in the valve industry for more than 20 years. After years of hard work and development, it has become a key backbone enterprise in the valve industry. It specializes in improving the innovation and manufacturing capabilities of special valves in harsh industrial environments. It is committed to providing customers with a complete set of fluid control solutions. It is a company integrating scientific research and development, A large-scale valve enterprise integrating testing and testing, manufacturing and sales.The company mainly produces API 6D pipeline ball valves, gate valves, globe valves, check valves, plug valves and API 609 series butterfly valves in 6 categories, with more than 1,000 specifications and varieties.
We're well-known as one of the leading trunnion ball valve manufacturers and suppliers in China. We warmly welcome you to buy or wholesale customized trunnion ball valve at competitive price from our factory. Contact us for more details.
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