How Butterfly Valves Work

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This 3D animated video explains how the butterfly valve works. We look at the valve’s main parts, how it functions, advantages and disadvantages.

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▶️Butterfly valves can be used to stop, start and regulate flow.

Butterfly valves are rotary motion valves, also known as quarter turn valves. Quarter turn valves are fast to operate as they only require 90 degrees of rotation in order to move from the fully open to fully closed position.

A gearbox can be used to make operation of the valve easier for the operator. Gearboxes allow for incremental movement of the valve although the response time (how long it takes to move from the open to close position, or vice versa) is longer.

The butterfly valve offers great advantage compared to the ball and gate valves as it is comparatively small, this is particularly true as the flow capacity of the valve increases.

Butterfly valves have a very low pressure drop and are well suited to high flow, low pressure, systems. The butterfly valve is ideally suited for large pipe bore applications and offers very little resistance to flow when fully open.

Like most common valve designs, butterfly valves consist of an actuator, stem, disc, bonnet and body.

#saVRee #Valve #IndustrialEngineering

[savree-d]

Want to continue learning about engineering with videos like this one? Then visit:

Want to teach/instruct with the 3D models shown in this video? Then visit:

[rufashaochicken]

Very simple but informative. Thank you.

[o_]

I know too little about so many things around me. Thanks for the clear explanation!

[osefalfanfadhil]

Great Explanation.. keep it up sir !!!

[rajankumartadhani]

I had seen all of your video you are doing great work. you explaination is good and animation is fantastic it will make more easier to understand the concept of all topic that you covered please make more video like that

[larssrensen]

Hi there,
Do you also have a video on comparing butterfly valves with offset, double offset and triple offset?
I try to find stuff but never come across videos showing what the valves do.

[kurushi]

What might cause the disc to suddenly scrape particles off the seat? I have a valve that's been working for years. No change in any other parameters as I can see. And yet, recently, the valve scraped off a noticeable amount of particles.

[firdausyasini]

You doing very good job - it would be nice to reduce the duration of the video, please.

[A_Braveworld]

If the indication is broken, how do you know valve is open or shut?

[ny]

I really enjoyed the video !
Can this lug wafer butterfly be used with natural gas ? And a servomotor for regulation ?

[seputardunia]

what this speed this motorized valve can be setting more fast..?

[theunboundedspirit]

Why using gearbox increases response time?

[rajkumarbourasi]

Butterfly wall mentionens
Ke Se hota he

[waynerozan]

Not informative enough. Nothing mentioned about full lug versus wafer body valves. Nothing about the correct orientation of BV in a horizontal pipe.