Products
Cast Trunnion Mounted Ball Valve
Introduction
The Cast Trunnion Mounted Ball Valve is a key fluid control device used in high-pressure and large-diameter pipeline systems. Its design features are that the valve body is made by a casting process, and the valve ball is supported by upper and lower fixed bearings to reduce operating torque. It is suitable for various industrial applications, including oil, gas, chemical, power generation, and water treatment industries.
Features
Excellent sealing performance
The Cast Trunnion Mounted Ball Valve adopt a floating ball design, with sealing rings made of PTFE (polytetrafluoroethylene) or other high-performance composite materials, to ensure a good sealing effect under different pressures and temperatures. Compared with traditional valves, our leakage rate is less than 1x10^-6 Pa·m^3/s, far exceeding the industry standard, effectively preventing the leakage of fluid media and ensuring system safety and environmental protection.
Excellent corrosion resistance
The surface of our valve ball is treated with nickel-based alloy or hard chrome plating, which has excellent corrosion resistance and wear resistance and can maintain long-term stable operation even in media containing solid particles or corrosive fluids.
Low operating torque
Our product design reduces the operating burden by dispersing torque. Compared with traditional ball valves, its operating torque is reduced by about 40%, which supports manual operation and is also suitable for electric, pneumatic and gear drive control, thus meeting diverse industrial needs.
Easy to operate
Our valve design has a convenient disassembly mechanism, which can quickly replace the valve seat and seal without special tools, greatly reducing maintenance time and cost.
Applications
Oil and Gas Industry
The Cast Trunnion Mounted Ball Valve is made of high-quality cast steel and can withstand temperatures up to 600°C and pressure levels of PN100, making it one of the key equipment in this industry.
Chemical Industry
The chemical industry involves the handling of a large number of corrosive chemicals, which places extremely high demands on valve materials. This type of ball valve usually uses PTFE (polytetrafluoroethylene) or other high-performance composite materials as sealing rings, which significantly improves corrosion resistance.
Power Industry
Steam control is a critical link in power facilities such as thermal power stations. Our valves are particularly outstanding in this field due to their excellent high temperature resistance. Not only can it withstand up to 50,000 switching cycles, but it can also maintain stable performance even under frequent operation, greatly reducing maintenance costs.
FAQ
Q: What is a Cast Trunnion Mounted Ball Valve?
A: A Cast Trunnion Mounted Ball Valve is a type of valve that uses a ball with a trunnion (a type of bearing or shaft) to support the ball. The trunnion design helps provide stability and ensures the ball remains stationary, reducing wear and tear. These valves are typically used in applications with high pressure and large pipeline systems.
Q: How does a Trunnion Mounted Ball Valve differ from a Floating Ball Valve?
A: Unlike a Floating Ball Valve, where the ball is held in place by pressure, a Trunnion Mounted Ball Valve uses a trunnion to physically support the ball at both ends. This design allows for more precise control and less wear in high-pressure and high-flow applications.
Q: What materials are typically used for Cast Trunnion Mounted Ball Valves?
A: These valves are typically made from materials such as carbon steel, stainless steel, and alloy steel, depending on the application's temperature, pressure, and corrosiveness of the media.
Q: What is the primary advantage of the trunnion design in these valves?
A: The trunnion design ensures the ball is firmly supported, preventing it from floating and allowing for more precise operation, especially in high-pressure systems. It also reduces friction and wear, leading to longer valve life and lower maintenance costs.
Q: Are Cast Trunnion Mounted Ball Valves suitable for both on/off and throttling services?
A: Yes, Cast Trunnion Mounted Ball Valves can be used for both on/off control and throttling, though their performance in throttling may depend on the specific valve design and application conditions.
Q: What are the pressure and temperature ratings of Cast Trunnion Mounted Ball Valves?
A: These valves can typically handle high pressure ratings, ranging from ANSI 150 to ANSI 2500, and can operate at temperatures from -196°C to 600°C, depending on the materials and design specifications.
Q: What maintenance is required for Cast Trunnion Mounted Ball Valves?
A: Maintenance typically involves periodic inspection of the ball, trunnion, seals, and actuator. Lubrication of the trunnion bearings, cleaning of valve parts, and replacing worn seals may be necessary to ensure optimal valve performance and longevity.
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