During valve selection, you must consider different factors specific to your application. First, you must know what function you want the valve to perform. Different types of valves are suitable for different applications. For example, tire valves are used in the field of vehicles. These valves vary by construction and vary by mode of operation. The most common valve types are:

Ball valve

Ball valves are one of the most popular types of control valves. These valves control flow through a hollow port ball that is turned by an external handle. Ball valves are quarter-turn valves. A quarter-turn valve is a valve in which the handle must be turned 90 degrees to open or close the valve. When the hole in the hollow ball aligns with the flow of fluid, the medium flows through the valve, and when the solid part of the valve aligns with the flow, the medium stops. Ball valves are simple and flexible in design and have a very long service life. If managed properly, they can be used after many cycles (drives) without maintenance.

Butterfly valve

Similar to a ball valve, a butterfly valve is a fast-acting valve that uses a quarter-turn mechanism to open and close. However, instead of a ball, a butterfly valve uses a disc attached to a central stem to perform control, and its structure is somewhat similar to a stylized butterfly, which is how the valve gets its name. As soon as the disc turns and its cross-section is perpendicular to the flow path, the flow of fluid stops. When turned back, the disk flows parallel to the fluid, and the fluid passes freely. The disc can also be rotated gradually to adjust the flow rate. Butterfly valves can be driven in a variety of ways. In some industries, such as the oil industry, butterfly valves are more common than ball valves. Some of the reasons for this are that butterfly valves are cheaper to operate and easier to install.

gate

Gate valves use a plate-like barrier to allow or prevent flow through the pipeline. The gate moves linearly only in the vertical plane. Unlike the previously mentioned valves, gate valves are not fast response valves. This means that the flow of fluid cannot be stopped quickly. This is because the gate must be gradually controlled to fully close to prevent it from slamming against the valve body. Gate valves cannot be used to regulate water flow.

Also, standard multi-turn gate valves are most often used as switching devices compared to true flow control valves. In the industry, this type is mainly used for larger diameter pipes due to its simplicity of setup compared to other large valve types. These are generally more expensive and harder to drive because most drives are rotary rather than linear.

Shut-off valve

These valves are linearly actuated. When the valve's hand wheel is turned to the open position, the disc element moves linearly in an upward direction proportional to the flow of fluid through it. There are several types of globe valves, namely once-through, angle-flow, cross-flow, and Y-flow globe valves, depending on the flow pattern in them. Some of its disadvantages are that there is energy loss and pressure drop in the valve due to the number of turns the fluid passes through the valve, and they are relatively difficult to actuate.

Plug valve

They are all quarter-turn quick-response valves with a hollow stop mechanism. The difference is that instead of a spherical hollow ball, a stopcock uses a cylindrical plug with a perforation at the end. A popular feature of plug valves is that they have no voids within the valve where liquid can trap, and they are very easy to automate. The plugs can also be simply adjusted to repair leaks that may get worse over time. This type of valve is used in industries with harsh applications such as corrosive environments such as oil refineries and chemical plants.

Ningbo Sinppa Air Tools Factory is a Chinese manufacturer of pneumatic tools, selling Air Quick Coupler, Pu Air Hose, Air Filter Regulator, and other tools.