Trunnion Ball Valve
What is Trunnion Ball Valve
A trunnion ball valve is a type of industrial valve designed to control the flow of fluids or gases through pipes. It features a rotating ball with a hole in the center, which is used to regulate the flow of the substance through the valve. The trunnion design involves a fixed axle or trunnion that supports the ball, allowing it to rotate freely and ensuring a tight seal when closed. These valves are commonly used in a variety of industries, including oil and gas, petrochemicals, and water treatment plants. They are known for their durability, reliability, and ease of maintenance.
why choose us
Advanced equipment
A machine, tool or instrument designed with advanced technology and functionality to perform highly specific tasks with greater precision, efficiency and reliability.
Rich production experience
We have a wide range of expertise and experience, from design and innovation to marketing and sales. This enables us to offer a suite of products and services tailored to meet each customer's unique needs.
One-stop solution
We can offer a range of services, from consultation and advice to product design and delivery. It is a convenience for the customers, as they can get all the help they need in one place.
After-sales service
Our terms of work have always been fixed within the work process and one can be assured about the guarantee of the work as we are there 24/7 business hours during the time your project is being worked is on.
-
![Forged Trunnion Mounted Ball Valve]()
Forged Trunnion Mounted Ball Valve
Size: 2”~28”. Class: 150LB 〜2500LB. Forged BodyAdd to Inquiry -
![DBB Ball Valve]()
DBB Ball Valve
Size: 2”~24” (DN50~DN600). Rating: 150Lb~2500Lb (PN16~PN420). Materials: Carbon steel /Stainless steel / Alloy steel /Special ( Monel /Inconel /Hastelly etc.)Add to Inquiry -
![Buried Fully Welded Ball Valve]()
Buried Fully Welded Ball Valve
Size: 2”~48”. Class: 150LB 〜2500LB. Fully Welded Forged BodyAdd to Inquiry -
![High Temperature Forged Steel Trunnion Ball Valve]()
High Temperature Forged Steel Trunnion Ball Valve
Compared with cast steel ball valves, this product uses a forged steel valve body, which improves structural density and reduces internal casting defects such as porosity, shrinkage cavities, andAdd to Inquiry -
![Electric Actuated Forged Steel Trunnion Ball Valve]()
Electric Actuated Forged Steel Trunnion Ball Valve
The Electric Actuated Forged Steel Trunnion Ball Valve is designed for critical isolation and control service in oil & gas transmission, LNG facilities, petrochemical plants, and high-pressureAdd to Inquiry -
![Side Entry Forged Steel Trunnion Ball Valve]()
Side Entry Forged Steel Trunnion Ball Valve
The forged steel trunnion mounted ball valve is engineered for critical isolation service in oil & gas transmission pipelines, LNG facilities, refineries, and petrochemical plants.Add to Inquiry -
![Top Entry Forged Steel Trunnion Ball Valve]()
Top Entry Forged Steel Trunnion Ball Valve
The Top Entry Forged Steel Trunnion Ball Valve is engineered for high-integrity pipeline systems where safe operation, reduced downtime, and long service life are essential.Add to Inquiry -
![Fire Safe Forged Steel Trunnion Ball Valve]()
Fire Safe Forged Steel Trunnion Ball Valve
The Fire Safe Forged Steel Trunnion Mounted Ball Valve is engineered for critical isolation service in Oil & Gas, LNG, refinery, petrochemical, and offshore applications, where zero leakage, fireAdd to Inquiry -
![High Pressure Forged Steel Trunnion Ball Valve]()
High Pressure Forged Steel Trunnion Ball Valve
The High Pressure Forged Steel Trunnion Mounted Ball Valve is engineered for critical isolation service in high-pressure, high-temperature, and severe operating environments such as oil & gasAdd to Inquiry -
![Soft Seated Flanged Trunnion Ball Valve]()
Soft Seated Flanged Trunnion Ball Valve
Unlike floating ball valves, the trunnion-mounted design supports the ball on both upper and lower trunnions, allowing it to remain mechanically fixed while the seats move to seal. This structureAdd to Inquiry -
![Buried Type Flanged Trunnion Ball Valve]()
Buried Type Flanged Trunnion Ball Valve
Our buried trunnion ball valves are specifically engineered for critical infrastructure, including natural gas transmission lines, crude oil pipelines, and municipal energy distribution systems.Add to Inquiry -
![Bi-directional Flanged Trunnion Ball Valve]()
Bi-directional Flanged Trunnion Ball Valve
Compared with floating ball valves, the trunnion-mounted structure supports the ball at both upper and lower trunnions, which reduces operating torque and improves sealing stability under highAdd to Inquiry
Advantages Of Trunnion Ball Valve
Superior performance and reliability
Trunnion ball valves are designed for heavy-duty applications, ensuring exceptional reliability and efficiency. An innovative trunnion design supports both ends of the ball, allowing it to withstand the forces generated by high fluid pressures and flow rates. As a result, these valves experience minimal wear, extending service life and reducing maintenance costs.
01
Enhance sealing performance
An essential advantage of trunnion ball valves lies in their superior sealing capabilities. The valve design incorporates multiple seals, including O-rings and seat rings, which ensure a secure shut-off even under high-pressure conditions. This reliable sealing performance not only enhances safety but also prevents potential environmental hazards by minimizing the risk of leakage.
02
Excellent flow control
Trunnion ball valves feature a full-bore design that facilitates unrestricted passage through the pipe. This feature minimizes pressure drop and ensures efficient fluid transfer. Low-friction operation and reduced torque make these valves easy to operate, providing smooth and precise flow control, an important aspect in optimizing various industrial processes.
03
Minimal maintenance and downtime
Due to their robust construction and reliable sealing, trunnion ball valves demand minimal maintenance. This reduced maintenance requirement translates to uninterrupted operations and increased productivity, making them a cost-effective choice for industries that heavily rely on continuous processes.
04
Easy actuation and automation
Trunnion ball valves are well-suited for actuation and automation, allowing for remote control and integration with the overall plant control system. This feature significantly enhances efficiency, safety, and monitoring capabilities in industrial applications, leading to optimized operations.
05
Types of Trunnion Ball Valve
Two-piece trunnion ball valve:This valve design has two main parts, the body and the bonnet. It is suitable for applications with a lower pressure rating, and it is easy to maintain.
Three-piece trunnion ball valve:This type of trunnion ball valve has three main parts, the body, the bonnet, and a central section that houses the ball and stem. It is a versatile valve that is easy to maintain and repair.
Full bore trunnion ball valve:This valve has a full bore ball design that is ideal for applications that require unrestricted flow. It also allows for the easy passage of pigging tools, which are used to clean pipelines.
Reduced bore trunnion ball valve:In this type of valve, the ball has a reduced diameter, which restricts the flow through the valve. It is mostly used in applications where a limited flow rate is required or where the pressure drop across the valve needs to be minimized.
How do you troubleshoot trunnion ball valves?
Check for leaks
If you notice any leaking from the valve, the first step is to identify the source of the leak. This may be either internal or external. Depending on the type of leak, you may need to replace the seal or gasket.
Check the ball and actuator
The ball inside the valve may become damaged or stuck, preventing the valve from opening and closing smoothly. Inspect the ball and associated parts and replace as required. If the valve is electrically powered, check the actuator for any issues. Ensure that the wiring is connected correctly and that the motor is functioning correctly.
Check the operating pressure
Trunnion ball valves are designed to operate within specific pressure ranges. If the pressure is too high or too low, the valve may not function correctly. Ensure that the valve is operating within the manufacturer's recommended pressure range.
Check the valve position and valve body
If the valve fails to open or close correctly, check that it is in the correct position. This may involve adjusting the actuator or manually adjusting the valve position. Check the valve body for any signs of corrosion or damage, which may prevent it from opening or closing correctly.
Application of Trunnion Ball Valve
Industrial processes
Many industrial processes require the use of trunnion ball valves to control the flow of various fluids such as acids, alkalis, and other chemical liquids. These valves are also used in water treatment processes, wastewater treatment plants, and food and beverage manufacturing.
Power generation plants
Trunnion ball valves are used in power generation plants to control the flow of steam and other high-pressure fluids. These valves are also used in nuclear power plants where the control of fluids is critical to the safety of the facility.
Oil and gas industry
Trunnion ball valves are commonly used in the oil and gas industry for controlling the flow of crude oil, natural gas, and other oilfield fluids. These valves are designed to handle high pressures and temperatures, making them ideal for use in harsh oilfield environments.
Mining industry
Mining companies use trunnion ball valves in the handling of slurries and other abrasive materials. These valves are designed to handle the high-pressure, abrasive nature of the mining process and are essential in ensuring safe and efficient operations.
Material of Trunnion Ball Valve
Trunnion ball valves are generally made of materials such as carbon steel, stainless steel, duplex stainless steel, and other alloys. The choice of material for a trunnion ball valve depends on various factors such as the type of fluid or gas being transported or processed, the operating conditions, and the required level of corrosion resistance.
Working Principle of Trunnion Ball Valve
When the valve is in the fully open position, the fluid flows through the valve body, around the ball and out through the other side of the valve. When the valve is partially closed, the ball rotates, partially closing off the flow of fluid. The valve is operated by a lever or handle that is connected to the trunnion. When the lever is rotated, the trunnion also rotates, opening or closing the valve. The trunnion is supported by bearings, which allow it to rotate smoothly without causing any damage to the valve body.
Components of Trunnion Ball Valve
Body: The ball valves 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.
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.
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.
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.
Valve 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. It controls how the ball moves.
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.
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.
What is The Sealing Performance of Trunnion Ball Valve?
Due to the presence of floating or fixed trunnions to support the ball and help distribute the torque evenly across the valve body. The seat of a trunnion ball valve is usually made of materials such as polytetrafluoroethylene, which has high chemical resistance and low friction coefficient, ensuring a tight and reliable seal. Trunnion ball valves are very effective at preventing leaks and maintaining consistent flow through the valve.
How to Choose The Right Trunnion Ball Valve?
Understand the specific application of the valve and its associated requirements. Some valves are designed for certain applications, such as high pressure or temperature, corrosive or abrasive fluids, or critical service applications. Determine the size of the valve required based on the size of the piping system. Consider the materials used in the construction of the valve. Select materials that are compatible with the type of fluid media flowing through the system. These materials can include various types of alloys, stainless steel, or other materials. Check the type of end connection required for the piping system, such as threaded ends, flanged ends, or welded ends. Determine maximum pressure and temperature requirements and select a valve that can handle these conditions.
How is a Trunnion Ball Valve Different From a Floating Ball Valve?
A trunnion ball valve is designed with additional support to hold the ball in place. This support comes in the form of a lower stem and upper stem that anchor the ball and prevent it from moving around. A floating ball valve, on the other hand, does not have this additional support and instead relies on the pressure of the fluid to keep the ball in place. The floating ball is not attached to the valve body and is free to move around, while the trunnion ball is firmly anchored in place. As a result, trunnion ball valves are typically used for high-pressure applications and where there is a need for tight shutoff, while floating ball valves are more common in low-pressure applications where the shutoff requirements are not as critical.
Maintenance Tips for Trunnion Ball Valve
Regular flushing and cleaning of the trunnion ball valve can help prevent clogging and improve its performance. Flush the valve with water or an appropriate cleaning solution and ensure that no debris or dirt remains inside the valve.
Proper lubrication can prevent wear and tear of the valve components and improve the valve's overall performance. Lubricate the stem and ball with a suitable lubricant. Avoid over-lubrication, as it can lead to leakage.
Regular inspection of the trunnion ball valve is important to ensure that there is no damage to the valve components. Check the sealing components, stem, and ball for any signs of wear and tear. Also, inspect the valve body for any corrosion or damage.
Monitor the temperature of the valve regularly, especially if it is operating at high temperatures. Ensure that the valve is not exposed to excessive heat, which can damage the valve components.
Monitor the valve's pressure to ensure that the valve is not exposed to excessive pressure, which can cause it to malfunction. Ensure that the valve's pressure rating is not exceeded.
What Types of Fluids Can Be Handled By a Trunnion Ball Valve?
Trunnion ball valves can handle a wide variety of fluids, including gases, liquids, and slurries. They are commonly used in the oil and gas industry, as well as in chemical and petrochemical processing plants. These valves can handle high-pressure and high-temperature applications and are particularly well-suited for abrasive and corrosive fluids. Trunnion ball valves are also effective for controlling the flow of fluids with high solids content, such as slurry or wastewater. They are a reliable and durable choice for a range of fluid handling applications.
Is It Necessary To Lubricate a Trunnion Ball Valve?
It is necessary to lubricate trunnion ball valves to ensure smooth and efficient operation. The trunnion ball valve consists of a rotating ball that sits on two trunnions. These trunnions are designed to bear the weight of the ball and ensure that it can rotate easily. Over time, the metal-to-metal contact between the trunnions and the ball can cause friction, leading to wear and tear. This can result in reduced performance and even failure. Lubrication helps to reduce friction and wear, prolonging the life of the valve and ensuring its smooth operation. Regular lubrication also helps to prevent corrosion and contamination, which can further damage the valve and compromise its performance.
How is a Trunnion Ball Valve Installed?
The valve should be located in the correct position and orientation, and its bolts should be tightened securely. The pipeline should be prepared by carefully cleaning and deburring the edges. The valve should be connected to the pipeline, ensuring that the flange faces are aligned and the bolts are tightened properly. After the valve is installed, it should be tested for leaks and its operation should be checked. The valve should be regularly inspected and maintained to ensure reliable and safe performance.
Our Factory
With strong technical force, advanced production technology and stable quality, it has contributed to the development of my country's chemical, petroleum, smelting and electric power industries. We always adhere to the tenet of "quality first, reputation first, timely delivery and considerate service".
FAQ
Q: What are trunnion ball valves?
Q: Why use a trunnion ball valve?
Q: Are trunnion ball valves bidirectional?
Q: What are trunnion ball valves made of?
Q: What is the difference between a floating ball valve and a trunnion ball valve?
Q: What are trunnions in a ball valve?
Q: What are the advantages of using a trunnion ball valve?
Q: What is the maintenance procedure for trunnion ball valves?
Q: What are the limitations of using a trunnion ball valve?
Q: What are some common applications of trunnion ball valves?
Q: What is the maximum operating pressure of a trunnion ball valve?
Q: How does a trunnion ball valve work?
Q: How do you select the right trunnion ball valve for your application?
Q: What are common problems associated with trunnion ball valves?
Q: What are the parts of a trunnion ball valve?
Q: What is the difference between a full bore and reduced bore trunnion ball valve?
Q: Can trunnion ball valves be automated?
Q: What are the features of a trunnion ball valve?
Q: How are trunnion ball valves installed?
Q: Can trunnion ball valves be customized to meet specific requirements?
As one of the leading trunnion ball valve manufacturers and suppliers in China, we warmly welcome you to wholesale high-grade trunnion ball valve for sale here from our factory. All our products are with high quality and competitive price.
valve for subsurface flow control trunnion ball valve, valve for emulsified fluid control trunnion ball valve, valve for partition flow control trunnion ball valve