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Trunnion Ball Valve VS Floating Ball Valve

A ball valve is a valve that is opened or closed by rotating the ball through the valve stem. Ball valves can be divided into 2-port ball valves, 3-port ball valves or 4-port ball valves. Also, it has electric ball valve and pneumatic ball valve to meet your actuation needs. Widely used in the chemical industry, water treatment industry, irrigation industry, shipbuilding industry and so on.

Ball valves can also be customized according to the requirements of the application industry. For example, sanitary ball valves can be used in the pharmaceutical industry, beverage industry, and biological processing industry with higher requirements.

Advantages of ball valve:

● Full bore

● Good sealing, low torque demand

● Compact design

●A variety of designs can be suitable for applications in various industries

Disadvantages of ball valve:

● Not suitable for mud applications or applications where the medium is relatively viscous

● The internal cleaning of the ball valve is not convenient

● Size is limited

Ball valves can be divided into floating ball valves and trunnion ball valves. Simply put, the floating ball valve means that the ball automatically floats inside the valve body, while the ball of the trunnion ball valve is fixed in the valve body, and there is a fixed shaft at the bottom of the valve body. The ball of the trunnion ball valve is supported by the valve stem and the trunnion at the same time, which makes it stronger and less operating torque.

Left: Floating ball valve Right: Trunnion ball valve

Source: Tameson

Therefore, the trunnion ball valve is very suitable for use in the high-pressure industry. Because the ball does not float and it is connected to the trunnion, this means that it will maintain proper sealing on both sides and will not increase the torque requirements. All in all, for the high-pressure industry, the trunnion ball valve will provide a very suitable and high-quality valve solution.

Application of trunnion ball valve:

Chemical industry: Trunnion ball valves can provide the chemical industry with a good sealing performance, safe and durable solution.

Power plants: Power plants will use different fuels for the power generation process, so the medium will have high temperature and high-pressure requirements. In this case, the trunnion ball valve is very suitable for this industry.

Oil and natural gas: Trunnion ball valves can well assist natural gas plants, oil refineries, gas supply pipelines, etc. to achieve the purpose of transmission and shut-off. The trunnion ball valve can well withstand the high-pressure demand of the industry.

Any needs about trunnion ball valve, welcome to consult us to get a free valve solution!


Post time: Dec-22-2021
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