Use of high temperature ball valves in the industry

 Ball valves are hugely used for controlling the flow of fluids in industrial and commercial piping systems. The tight block feature of these valves makes them particularly suitable for flow control applications in excessive  pressure and high temperature conditions. They are generally used in catalytic reforming, refining, power, marine, petrochemical, and process industries.

The port size of a full port ball valve is roughly the same as the pipeline's inner diameter. These designs are best suited for applications that high temperature ball valves minimal resistance to flow of fluid.

Contrary  to full port designs, the hole diameter of regular port ball valves is small and displays  increased resistance to fluid flow. They can be used as alternatives to gate valves in different industrial fluid flow control applications. 

The hole diameter of a reduced port ball valve is approximately equal to 60% of the valve's inner diameter. This ball valve design is suitable for small, end-loaded valves that need small-diameter balls. 

In floating-ball design, the flow control stick is attached to the ball at a slotted right angle to the ball valve's port.

In trunnion design, the ball is held up by two trunnions or short-shaft extensions at the ball's top and bottom ends. These pivots are attached to bearings, which are in turn gathered to the valve body. In high temperature ball valve applications, the ball is held in place by these trunnions.

The genuine design of ball valves for high pressure and high temperature applications depends greatly on the material used to make the seal ring.

Soft seats are made from strong materials such as PEEK, PFA, and TFE. Through proper design, soft seals can also be used in depletion control applications. However, the efficiency of soft seat rings is unnatural by their service temperatures.

Metal seats are produced from base metals coated with tungsten carbide and Stellite. Although metal seat rings withstand high temperature ball valves, they are not as leak-tight as soft seat rings.