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Valves are shut-off or regulating equipment placed along the path of a fluid stream.
They can either enable or interrupt the fluid to flow, regulate the range or pressure rate and their body has inlet and outlet ports. Inside them there is a moving element for flow regulation or interruption.
In this video, we will show you how the Plug valve works. Watch also the other videos on our playlist to find out all the other types of valves we use every.
Jaes, for over 10 years has been providing its customers with industrial spare parts and in their catalogue you can find every type of valve from the leading manufacturers.
Ancient civilizations became prosperous thanks to their ability to manage water resources.
During the Roman age, the realization of aqueducts and the development of metallurgy led to an increase in the use of valves and taps in water networks. As a result, water waste dropped dramatically. Romans used cylinder plug valves, rarely conical, whose body and plug were made through casting.
The plug valve is a rotary motion valve, operating the same way as the ball valve, although the plug can be cylindrical or conical.
Let’s now see how a conical plug valve is made:
- Externally, on the valve’s body, it has 2 housings at both ends to be screwed to the pipes.
-Inside the valve’s body we can find the shutter, which can be compared to some conical corks that can block the passage of the flow
- On the top of the shutter (typically attached to the end with larger diameter) we can see the stem to which the actuator is connected to.
The operation of the plug valve is very simple, but let’s analyze it in detail.
The most common plug valve model is the 2-port valve with two positions: it stays open to make a fluid to flow and closed to stop the flow. To go from open to close position the shutter rotates by 90 °. For this reason, this type of plug valve is also called quarter-turn valve.
They can either enable or interrupt the fluid to flow, regulate the range or pressure rate and their body has inlet and outlet ports. Inside them there is a moving element for flow regulation or interruption.
In this video, we will show you how the Plug valve works. Watch also the other videos on our playlist to find out all the other types of valves we use every.
Jaes, for over 10 years has been providing its customers with industrial spare parts and in their catalogue you can find every type of valve from the leading manufacturers.
Ancient civilizations became prosperous thanks to their ability to manage water resources.
During the Roman age, the realization of aqueducts and the development of metallurgy led to an increase in the use of valves and taps in water networks. As a result, water waste dropped dramatically. Romans used cylinder plug valves, rarely conical, whose body and plug were made through casting.
The plug valve is a rotary motion valve, operating the same way as the ball valve, although the plug can be cylindrical or conical.
Let’s now see how a conical plug valve is made:
- Externally, on the valve’s body, it has 2 housings at both ends to be screwed to the pipes.
-Inside the valve’s body we can find the shutter, which can be compared to some conical corks that can block the passage of the flow
- On the top of the shutter (typically attached to the end with larger diameter) we can see the stem to which the actuator is connected to.
The operation of the plug valve is very simple, but let’s analyze it in detail.
The most common plug valve model is the 2-port valve with two positions: it stays open to make a fluid to flow and closed to stop the flow. To go from open to close position the shutter rotates by 90 °. For this reason, this type of plug valve is also called quarter-turn valve.
However, there are several models of plug valves, in fact, its shape makes it possible to have more than two ports.
As we can see, this 3-way model is provided with a shutter that can stay in 4 different positions. Let’s say that the entrance of the fluid is just on one of the ports, we can:
- split the fluid to get out from the other 2 ways
- we can close the entrance by interrupting the fluid completely
- or we could interrupt one exit or the other one
A multiport plug valve has the great advantage to make the flow splitting into as many ports as the valve has.
Let’s now look at how a real 2-way plug valve for heavy duties is composed. We can see that it is equipped with a control interface and the actuator is made of an electric motor and a handle. It also owns a gear train connected to the stem.
Inside we can notice how the cylindrical plug rotates by 90° to interrupt the flow, but in order to be rotated so little, it needs many engine rpm or handle spins which will then be reduced by the gear train.
In this way, we can apply more strength to the shutter and have more accurate control of the flow range at the same time.
Do you know how many types of valves we use every day? Don’t miss the videos of our playlist, you will find out all kinds of valves that surround us.
If you’ve found this video useful, please let us know by leaving a like and a comment. You can also share it, and don’t forget to subscribe to our YouTube channel.
As we can see, this 3-way model is provided with a shutter that can stay in 4 different positions. Let’s say that the entrance of the fluid is just on one of the ports, we can:
- split the fluid to get out from the other 2 ways
- we can close the entrance by interrupting the fluid completely
- or we could interrupt one exit or the other one
A multiport plug valve has the great advantage to make the flow splitting into as many ports as the valve has.
Let’s now look at how a real 2-way plug valve for heavy duties is composed. We can see that it is equipped with a control interface and the actuator is made of an electric motor and a handle. It also owns a gear train connected to the stem.
Inside we can notice how the cylindrical plug rotates by 90° to interrupt the flow, but in order to be rotated so little, it needs many engine rpm or handle spins which will then be reduced by the gear train.
In this way, we can apply more strength to the shutter and have more accurate control of the flow range at the same time.
Do you know how many types of valves we use every day? Don’t miss the videos of our playlist, you will find out all kinds of valves that surround us.
If you’ve found this video useful, please let us know by leaving a like and a comment. You can also share it, and don’t forget to subscribe to our YouTube channel.