What is a trunnion ball valve?
A trunnion ball valve is a commonly used fluid control valve, characterized by its simple structure, convenient operation, good sealing performance, and low fluid resistance. A trunnion ball valve consists of a valve body, valve core, valve seat, and valve stem. The valve core is spherical, and its rotation controls the on/off state and flow rate of the fluid.
working principle of a trunnion ball valve
The working principle of a trunnion ball valve is based on the rotation of the valve core to control the opening and closing of fluid and its flow rate. When the valve core rotates to be parallel to the valve seat, the valve core hole aligns with the valve seat hole, allowing fluid to flow through both holes, thus opening the valve. When the valve core rotates 90 degrees, the valve core hole becomes perpendicular to the valve seat hole, closing the valve and preventing fluid from passing through either hole, thus closing the valve.
What is the difference between floating ball valve and trunnion ball valve?
1. Structural Design: Trunnion ball valves reduce friction and improve operational flexibility through a bearing-bearing shank and trunnions on both sides of the ball. Floating ball valves, on the other hand, rely on the free floating of the ball to adapt to different operating conditions.
2. Application Scenarios: Due to their superior sealing and pressure resistance, trunnion ball valves are more suitable for low-temperature, high-pressure, and corrosive environments. In contrast, floating ball valves perform better in medium- and low-temperature, normal-pressure, and less corrosive media.
What are the applications of trunnion mounted ball valve?
Trunnion ball valves are widely used in various industrial fields due to their simple structure, convenient operation, good sealing performance, and low fluid resistance. Here are some common applications of trunnion ball valves:
- Oil and Gas Industry: Trunnion ball valves are commonly used in pipeline systems in the oil and gas industry to control fluid switching and flow. Due to their excellent sealing performance and high-pressure resistance, they are suitable for high-pressure and high-temperature working environments.
- Chemical Industry: Trunnion ball valves are widely used in various chemical processes in the chemical industry to control the flow of various chemical media. Their simple structure and ease of maintenance make them suitable for various corrosive and high-temperature media.
- Power Industry: Trunnion ball valves are used in the power industry to control the flow of water, steam, and other media in boiler systems, heating systems, and cooling systems. Their rapid switching and flow regulation characteristics make them suitable for applications with strict requirements on fluid flow rates.
- Food and Pharmaceutical Industry: Trunnion ball valves are widely used in the food and pharmaceutical industry to control the flow of food and pharmaceuticals. Trunnion ball valves offer excellent sealing performance, and the materials used can meet hygiene standards, making them suitable for applications where media contamination is not a concern.
- Wastewater Treatment Industry: Trunnion ball valves are used in the wastewater treatment industry to control the flow of wastewater and various media during the treatment process. They offer excellent sealing and corrosion resistance, making them suitable for harsh operating conditions such as wastewater treatment plants.
trunnion mounted ball valve supplier
