What are Ball valves?
Ball valves are actually the mechanical devices that help in controlling, directing, guiding and in modulating the flow of substances such as liquids, pressures and gas etc. there are many types of ball valves which contain the different devices for different kinds of uses.
Different types of ball valves can be classified into different features such as the number of ports, their design, seat type, ball access, body assembly and their bore sizes.
Standard for ball valve
Ball valves are mostly designed to confirm API 6D, API 6A and ANSI B16.34. The API are used for pipeline specifications, API for Christmas tree and wellhead equipment and ANSI are used for valves, welding and flanged end. Other related standards that are used for ANSI B16.5, ANSI B16.25 and ANSI B16, 10 are also used in the designing of ball valves.
Ball valves are also designed to meet fire safe requirements to BS6755, API 607 and API 6FA. Final testing is done to confirm API 598, MSS SP 61, API 6D and API 6A requirements.
Popular ball valves types
Depending on the valve applications users should determine what kind of ball valve type is the right choice for them.
1. V- Port ball valves
The V in the v port ball valves shows the shape of the ball and shape of the seat. This valve enables users to control the closing and opening better.
2. Standard port ball valves
The standard port ball valve has a very smaller ball and port as compared to the full port. It is very less expensive but it has come up with a little restricted flow due to the pipe size. As they are cheaper they have the highest pressure as compared to the other valves. Just like the full port valves these standard ports are very great for the systems with high flow coefficient.
3. Full port ball valves
These full port ball valves are more expensive than other valve types. The oversized valves in this full port valve lowers the loss of friction just because the hole in this ball has the similar size as the pipeline. As the valve is larger the flow is unrestricted in full port ball valve size.
4. Multi-port ball valves
Multi-port ball valves consist of three or four ways with an L to T shape hole in the middle of the valve. T valves are able to connect all kinds of port pairs and L valves are able to connect the center port to the side ports. Inlet that is in the multi-port ball valve is actually orthogonal to the outlet’s plane. 4-way ball valves contain 2 L shaped ports in the multi-port ball known as X port.
5. True union ball valve
True union ball valve contains a pin which helps in securing the ball in its places and it stops the movements. Two shafts are placed at the opposite ends in true union helps in enabling the support of the segmented ball. It also helps in enabling the system to produce less friction between different parts of the true union valves.