Valves are commonly known as regulators which are used in a wide range of applications. Valves are categories and it is depended on certain considerations. Here are some types of valves used in the industries and they are.
Plug valve:
Plug valve id designed in quarter-turn rotary motions that are used to stop or start the flow of with the help of tapered or cylindrical plug. Plug valve is fixed at the gate valve and operated quickly it is used to service in high-pressure temperature.
Y-strainer:
Y-strainer is a mechanical device used to remove unnecessary liquid, gases, and steams. It is used to protect pipeline parts such as pumps, meters, stream taps, regulators, control valves, and other devices. It is also used in large straining applications to protect the downstream process system and it includes petroleum, chemical processing, marine, and power generation.
Butterfly valve:
The butterfly valve is also in quarter-turn rotational motion used to stop and start flow that is mounted on a rotating shaft. The components of the butterfly valve are body, disk, stem, and seat. The advantages are easy and fast to open, inexpensive to build, require less space, and less maintenance.
Check valve:
So the valves are used in many fields and used to control flows. It is characterized by lower recovery confidence. They can regain very less static pressure and a high recovery coefficient. There are kinds of valves and they are the globe valve, angle valve, ball valve, pinch valve, and so on.

Only fluids are allowed to flow in one direction it is consists of two ports one is inlet media and the other is output media. It is known as a one-way valve as it flows only through in one direction.