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What are the Different Types of Ball Valves?

What is a Ball Valve?

A ball valve is a type of valve that controls hydraulic flow by using a spherical perforated barrier. To open or close a ball valve, it is normally spun 90 degrees around its axis. It’s one of the most common types of valve. Ball valves can be used for both liquid and gas applications. Because of their extended service life and dependable sealing during their service life, they are very popular in the chemical, petrochemical, and oil and gas industries. Ball valves are also suitable for vacuum and freezing applications.

How does it work?

The valve contains a hole through which the flow may conveniently go when the ball within the valve is properly integrated with the two ends of the valve. The valve is totally shut when the hole is exactly perpendicular to the device’s ends. When the hole is in any other position, the flow is completely or partially halted.

Some of the types of Valves:

One-Piece Valve:

The inner elements of a one-piece ball valve are contained in a single-piece cast body. The possibility of liquid overflowing from the valve is no longer a possibility. One-piece ball valves, which have a smaller diameter, are low-cost. A welded one-piece ball valve is more common, but it can’t be dismantled for cleaning or repaired once it’s been damaged; as a result, it’s only used in situations where there’s a minimal risk of molecule formation and disinfection isn’t a major concern. Screwed one-piece ball valves, on the other hand, may be cleaned, adjusted, and repaired, whereas damaging them necessitates the use of special tools.

Two-piece valve:

For reduced bore and FB plan valves with diameters more than 6″, a two-piece plan is utilized to supplement the single-piece plan. The ball is kept in place by the body stud, which is created in two pieces as part of a two-piece design. A full bore or reduced bore design may be acceptable at this point.

Three-piece valves:

A three-piece ball valve is made up of housing for the valve’s internal components that is attached and maintained together by bolt connections at both ends. The main pipe is threaded or welded to the ends.

Top Entry Valves:

By simply removing the bonnet on top of the valve, a top entrance ball valve enables access to the valve’s internals. This permits in-line upkeep exercises without eliminating the ball valve from the primary line.

Full Port Ball Valve:

Full port ball valve has a larger than usual ball with the goal that the opening in the ball is a similar size as the pipeline bringing about lower grating misfortune. Stream is unlimited, however, the valve is bigger.

Standard Port Valves:

In contrary to the full port ball valve, the standard port ball valve has features of a smaller port and ball. It is comparatively less expensive, and it has a somewhat lower flow due to the pipe size. They have bigger pressure drops than other ball valve varieties but are less expensive.

Trunnion Ball Valves:

It has a mechanical mechanism that anchors the ball at the top and bottom, and it’s frequently seen on larger, higher-pressure valves.

Vented Ball Valve:

A vented ball valve is similar to a regular ball valve in construction and operation, with the exception that the vented ball has tiny orifices punched into its side. The orifice is pointed to the outflow side of the valve when the valve is closed. To prevent leakage, valve failure, and explosion, the pierced hole is utilized to exhaust trapped gases that produce a build-up of internal pressure inside the valve.

Reduced Bore Valve:

A reduced bore has a bore diameter that is less than the (connection) pipe diameter by a pipe size. The real decrease is established by the manufacturer’s and customer’s agreement. Ball valves with a reduced bore are more prevalent than those with a full bore. They’re employed in situations where the product flow rate and turbulence aren’t an issue, and particle build-up is unlikely.

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What are the Different Types of Ball Valves?

by Piping Mart time to read: 3 min