A Complete Guide to Trunnion Mounted Ball Valve

A Complete Guide to Trunnion Mounted Ball Valve

Trunnion-mounted ball valves (TMBVs) are industrial valves that are widely used in many different applications, including the oil and gas, petrochemical, and power industries. These valves are known for their high durability and reliability, and their ability to withstand high pressures and temperatures. In this blog, we'll provide a complete guide to trunnion-mounted ball valves, including their design, operation, and maintenance. Also, you will know which trunnion-mounted ball valve manufacturing firms are reliable for purchasing the same.

What is a Trunnion-Mounted Ball Valve?

A trunnion-mounted ball valve is a type of industrial valve that uses a ball-shaped closure element to control the flow of fluids. The ball is mounted on two trunnion bearings, which provide support and allow for the smooth operation of the valve. TMBVs are typically used in applications where high pressure and temperature are present, as they are designed to withstand extreme conditions.

Design of a trunnion-mounted ball valve

TMBVs consist of several components, including the body, ball, stem, seats, and trunnion bearings. The trunnion-mounted ball valve manufacturers design it by keeping an eye on every detail. The body of the valve is typically made of carbon steel or stainless steel and is designed to withstand high pressure and temperature. The ball is also made of the same material as the body and is designed to fit snugly into the valve body.

The stem of the valve is used to control the position of the ball and is connected to an actuator that allows for the remote operation of the valve. The seats of the valve are located at the top and bottom of the ball and are designed to seal the valve when it is in the closed position. The trunnion bearings provide support for the ball and allow it to rotate smoothly within the valve body.

Operation of a trunnion-mounted ball valve

TMBVs are operated by turning the stem, which rotates the ball within the valve body. When the ball is rotated 90 degrees, it either allows or blocks the flow of fluids through the valve. When the valve is in the closed position, the seats seal tightly against the ball, preventing any leakage of fluids.

TMBVs can be operated manually or remotely. In manual operation, the stem is turned by hand, while in remote operation, an actuator is used to turn the stem. Remote operation is typically used in applications where the valve is located in a hard-to-reach location or where frequent operation is required.

Why buy Trunnion Ball Valves from Oswal Industries Limited?

There are several reasons why you may want to consider buying trunnion ball valves from Oswal Industries Limited. We are known as leading manufacturers of trunnion mounted ball valves. We produce high-quality valves that are designed to withstand extreme conditions. We offer a wide range of trunnion ball valves that can be customized to meet your specific requirement. Also, we provide you with competitive pricing for their trunnion ball valves, making them an affordable option for businesses of all sizes.

Maintenance of a Trunnion-Mounted Ball Valve

TMBVs require regular maintenance to ensure their proper operation and longevity. The valve should be inspected regularly to ensure that there is no damage to the valve body, ball, or seats. The stem and actuator should also be inspected to ensure that they are functioning properly.

The valve should be lubricated regularly to ensure the smooth operation of the stem and ball. If the valve is operated in a harsh environment, such as one with high temperatures or corrosive fluids, the valve should be inspected more frequently.


Trunnion-mounted ball valves are an important component in many different industrial applications. When bought from a reliable trunnion-mounted ball valve manufacturing company. These valves are known for their high durability and reliability, and their ability to withstand extreme conditions. By understanding the design, operation, and maintenance of TMBVs, you can ensure that your valves are functioning properly and will provide reliable service for many years to come.