Gate Valve vs Ball Valve Difference – Learn 6 main Differences
Gate Valve vs Ball Valve Difference – Learn 6 main Differences


Welcome to hardhatengineer.com. I am Varun Patel. In this video, you will learn about the difference
between the gate valve and the ball valve. Gate valve versus ball valve video is helpful
for those who have just started working in industries. Please subscribe to my channel because that
helps me to increase my reach on YouTube, and you will get notification of new video. You can subscribe right now by clicking the
subscribe button, which is on the corner of your screen. On this slide, you can see the gate valve
and ball valve side by side. The first thing you will see is the shape
of the body. You can easily see the difference between
them. The gate valve has a larger body, as compared
to a ball valve of the same size and rating. You can also see that the gate valve body
is vertically longer due to its disc that moves vertically in the body. Whereas in the case of ball valve, the body
is horizontally longer as ball shape disc rotates in the body. So, now on you can easily identify these types
of valves in the field. On this slide, I have shown a cross-section
of both valves. Let’s compare side by side to know the differences
between them. The type of disc defines the type of valve
in most cases. The valve disc is the component that stops
or controls the flow through the valve. Gate valve disc is a vertical and flat circular
plate whereas, in the case of a ball valve, it is a spherical metal ball. I want to highlight that both the gate valve
and ball valve are used as an on-off valve. That means it can be either fully open or
close. You cannot use these valves as a control valve
as they are not designed for this function. If somebody is using these valves as a control
valve then it is a wrong practice. The second difference is the way these valves
are open. The gate valve is a linear motion valve whereas
the ball valve is a rotary motion valve. The ball valve is a fast-acting valve as just
a 90-degree turn can fully open or close the valve. In the case of the gate valve, the gate moves
perpendicular to the flow of fluid, and it required more time to open or close the valve. The stem of the gate valve is long as compared
to the ball valve. Here you can see that ball is connected with
the lever by a short stem. And in the case of the gate valve, you can
see that handwheel is connected with disc through the long threaded stem. Both theses valve can be operated by a motor. Small and medium-size ball are lever operated
whereas large size ball valve required gear mechanism with handwheel due to large torque
requirement. On the other hand, gate valves are always
operated through handwheel with or without gear mechanism depending on the size of the
valve. The next difference is the material of the
valve sheets. Gate valves are available in mainly metal
sheet design whereas the sheet of the ball valves can be of metal or non-metal depending
on the temperature requirement. On this slide you can see the multiport ball
valve, ball valve offers multiple port option whereas gate valves are simple in design and
always single port. That means only one inlet and one outlet. Cost-wise, the ball valve of the same size
and rating will be costlier as compared to the gate valve. There are the main differences between the
gate valve and the ball valve that I have summarized on this slide. Both gate and ball valves are the right choices
for positive isolation. The ball valve offers a little superior shutoff
as compared to the gate valve due to soft sheet design. Choosing the correct valve for your service
depends on many factors. Such as cost, fluid of the service, temperature,
pressure, life cycle of the plant. I hope this video is helpful to you. Please do like and share this video with your
friends. If you want to learn more about piping, you
can visit my website, hardhatengineer.com. Don’t forget to subscribe. See you soon. Goodbye, take care.

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