Trunnion mounted ball valve

The key difference beteween a floating ball valve and a trunnion mounted ball valve is how each achieves a line seal. The robust design tolerates the heavy loads applied to the valve trim that result from of large sizes, high pressures and dynamic temperature cycles. Examples of forged ball valves (small size and stainless steel valve with a forged body, trunnion mounted). Trunnion Mounted Ball Valves - Bonney Forge TRUNNION BALL VALVE DESCRIPTION PRODUCT FEATURES The trunnion ball valve is a form of quarter-turn valve which uses a hollow, perforated and fixedsupported.

Trunion mounted ball valves are uses a spring mechanism andor line pressure assistance to drive the upstream seat against the stationary ball.

Trunnion-mounted Ball Valves Products L T Valves

Service, ASTM A3for low-temperature service and ASTM A3CF CF8M for cast stainless steel valves). MVS Trunnion Mounted Ball Valve is the result of Innovative engineering. A trunnion ball valve has additional mechanical anchoring of the ball at the top and the bottom, suitable for larger and higher pressure valves (say, above cm and bars). Valves of sizes above inches have a cast body (the most common grades are ASTM A2WCB for high temp.
See the highlighted portion in the image and remember as you will see the difference when I will explain you about trunnion mounted ball valve.

The Habonim trunnion mounted valve series is specially designed to endure the harsh conditions of the oil gas and petrochemical industries. Trunnion-mounted Ball Valves Products L T Valves Trunnion-mounted Ball Valves - Top-entry Design Special Features: Accessibility to all the valve internals from the top In-line valve maintenance, without disassembling the valve from the pipeline. Difference Between Floating Ball Valve Trunnion Ball Valve. The ball is free to float inside the valve body. There are a few types of ball valves related to the attachment and lateral movement of the ball: Trunnion.

This type of ball valve is known as Cavity Filler Ball Valve. Trunnion Ball versus Floating Ball Valves Similarly, trunnion mounted ball design is also capable of bi-directional sealing. This is particularly advantageous when the ball valve is actuated because it reduce the size of the actuator and hence the overall costs of the valve actuation.

In floating ball valve, the ball is held in the position by the compression of the two elastomeric seats against the ball.

An advantage of trunnion ball design over floating ball is the lower operating torque of the ball. In Trunnion Mounted Ball Valve, the ball rotates without moving on the horizontal axis, where as seats are floating and free to move on the same axis. It embodies all the quality, Performance, value and safety features required for critical applications. A gas hybrid water heater uses a modulating infrared burner that is triggered by water-flow or thermostat).

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