Ball Valves

We offer a full range of ball valves in a variety of sizes, pressure ratings and materials, in wafer style, or screwed, welded or flanged connections
The restriction on size of ball valves is only one of exponentially increasing cost of production in larger sizes (from 8” upwards) but in small to medium sizes they offer good performance for a low cost.

A ball valve has a quarter turn spindle connected to a ball inside the valve. The ball has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle position lets you see the valve's position. On a floating ball type, the upstream pressure presses the ball against the seat, giving a tight shut off. On a trunnion mounted type, the ball is fixed; seat sealing action is achieved by the thrust of springs acting on the seat rings, as the pressure increases the fluid pressure pushes the seat rings against the ball.

Ball valves are durable and usually work to achieve perfect shutoff even after years of disuse. They are therefore an excellent choice for shutoff applications and are often preferred to globe and gate valves for this purpose, especially in smaller sizes. However, standard ball valves do not offer the fine control that may be necessary in throttling applications, but V ported ball variations are available for control purposes. The unrestricted bore in full bore ball valves make them ideal for hot tapping and pigging.
Being a quarter turn from fully open to fully closed, and having a relatively low operating torque, ball valves can be readily actuated for remote operation.

When selecting a ball valve, it is important to consider operating temperature and pressure, media properties, duty required and suitability for the environment

Call now to discuss your requirements.



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