What are Plug valves?

Plug valves allow fluid to flow through the opening plug with a minimum of turbulence because they provide a straightway passageway via the ports. It does this by using a stopper that is either cylindrical or tapered (a disc in the form of a plug) to either allow or block passage straight through the body. Whether the valve is completely open or totally closed, the flow may go in either direction. The plug valves have seen duty in a wide variety of fluid systems throughout the years. Their performance in applications involving slurries is satisfactory. As an on-off stop valve, they are used in bubble-tight service applications. They are used in applications ranging from vacuum to high pressure, as well as air, gaseous, and vapor services, natural gas, and oil pipeline systems, food processing, nonabrasive slurry services, vacuum services, and pharmaceutical services. They work well as on-off valves, for redirecting services, and for throttling to a modest degree. In the beginning, plug valves were intended to take the place of gate valves because, in comparison to gate valves, plug valves’ quarter-turn movement makes it simpler for the valve to open and shut against the flow of fluid.

Working of Plug Valves:

A plug valve consists of a plug that is housed inside the valve body beside a channel that is hollow. The process of making a quarter turn brings about an alignment between the pipe and the hole, which results in the pipe being in an open position. When the valve is rotated from its open position to a 90-degree angle, it will sit across the pipe, resulting in the valve being in its closed condition. Plug valves may be purchased in a wide range of forms, each of which can have a unique port opening through the plug.

Two-Way Plug Valves: The design of these valves enables for a closure element to be located in the center (consisting of a plug and a sleeve), in addition to providing a through-and-through, two-way service for the open and close function.

The third port on these valves, which are known as three-way plug valves, is commonly positioned at a 90-degree angle to the valve’s input. The flow (entrance from the inlet) may be redirected between one or both exits with the assistance of these plug valves, or the flow can be combined with their assistance (entry from the two inlets channeled into a single outlet).

Design of Plug Valves:

Valve housing

  • Plug: perforated to meet fluid conduction standards.
  • Hand-wheel or electric actuator for control.
  • Plug valves have a longer lifetime than other valves due to their basic design; fluid seldom leaks through them because of the reduced amount of time it spends in direct contact with the seat, which also reduces wear on the seat.

The operation of the Plug valve and the Ball valve are conceptually pretty similar. The control mechanism gives us total control over the opening and shutting of the valve. Depending on whether or not you rotate the hand wheel 90 degrees, the valve will be in either the completely closed or fully open position. When the crank is positioned parallel to the pipeline, the valve will be in the open position. When the valve is completely open, the flow through the valve will be straight; however, when the valve is in the regulating position, the flow through the valve will generate a vortex, resulting in a drop in pressure.

Typically, the Plug valve is not utilised for flow control because, while in the throttle position, the gate wears unevenly. As a consequence, the Plug valve is used seldom.

It is also feasible to create Plug valves with many ports or passageways. This specific kind of valve is referred to as a multi-way valve. Multi-way valves are widely used to implement flow dividers. Simply twisting the hand wheel 90 degrees will cause the flow direction to shift. When it comes to adjusting the flow’s direction, a multi-way valve may substitute for a large number of gate valves. This would reduce the total operating expenses and make the business easier.

Advantages of Plug Valve:

In addition to their compact size and low overall footprint, plug valves provide a variety of other advantages, including the following advantages:

  • The Flow Regulation process involves a safe shut-off, a quick opening, and a pressure decrease at a low level.
  • Because the actual plug and the seating surface of the body are not made to be exposed to the line fluid, there is a reduced chance that either corrosion or erosion will take place. This helps to ensure that the product will last for a long time.
  • The adaptability of plug valves is not in dispute because of the fact that they may even be employed with very high flow rates.

Applications of Plug Valves:

Plug valves are very efficient as tight shut-off and on valves, making them well suited for usage with corrosive hazardous liquids and gases. Plug valves may also be used to control flow. It is the responsibility of Valve Suppliers and Valve Manufacturers to guarantee that plug valves are used in the following contexts:

  • Oil piping systems
  • Flow control systems for conditions of high pressure and high temperature
  • Chemical maintenance and repair
  • Corrosive compounds processing

The following is a list of the typical industrial applications for plug valves:

  • Plug valves are capable of managing high-pressure systems because they do not get clogged with debris. In addition to this, they are able to deal with caustic and hazardous compounds, which need specialized maintenance and replacement.
  • Since these plug valves are able to withstand high pressure, they are used in high-pressure applications such as coiled tubing, cementing, acidizing, high-pressure/temperature materials, and other similar applications.
  • Because they do not get clogged easily and are resistant to corrosive elements, lubricated plug valves are used in this setting. Because of these characteristics, they need correct maintenance to be performed at regular intervals.
  • Because these valves can easily seal off and separate the liquids in order to avoid contamination or mixing, which is a crucial step in method-specific high-pressure application, the plug valves offer great flow control/isolation of the materials. This is because flow control and isolation are essential when working with high pressure.
  • Because plug valves do not readily get clogged, they are able to manage the abrasive sorts of materials. Additionally, plug valves are excellent at control and isolation, which makes them helpful for dealing with oil and coal slurries.

From where to buy the best Plug valve?

You have arrived at the correct location in the event that you are considering making a purchase of Plug Valves. There is a consensus among industry professionals that GMK valves are among the most trustworthy and durable valves that can be purchased anywhere in the world.

Why GMK?

GMK has established a highly effective management structure, in addition to a technical R&D and quality inspection center. Moreover, it has imported state-of-the-art manufacturing technology from abroad and is stocked with state-of-the-art machining centers, CNC machine tools, metal cutting, and processing equipment, physical and chemical testing equipment, nondestructive testers, spectrum analyzers, valve comprehensive performance testers, and other apparatus to ensure that its products meet their goal of having zero leaks. We are committed to providing the highest quality products and services possible, and we do this by assembling a team of engineers, technicians, and other workers that are highly skilled and committed to their work. This allows us to provide our consumers with a superior product at a fair price and promptly. To stay ahead of the constantly developing business, we are always looking for ways to improve our products and are open to hearing feedback from customers. Using our knowledge and experience, we are certain that we can help you grow your business and reach new heights of success.

What plug valve GMK offers:

Actuator valves are available in a wide range from GMK. Their famous ones include the GMK Orbit Plug Valve / DBB PLUG VALVEInverted Pressure Balance Lubricated Plug ValveLift Plug Valve and many more are among their most well-known products.


Plug valves are vital components in a vast array of applications and industries, such as those that work with gases, liquids, non-abrasive slurries, fuel gas pipe systems, chemical industries, fly ash usage, and applications ranging from vacuum to high pressure. GMK has on hand a team of highly experienced professionals, each of whom has in-depth knowledge of the propane industry, as well as the industrial and combustion spheres. We are able to be of assistance to you in finding the gas plug valves that are the most appropriate for your needs.