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7/30/2019 What is Difference Between Ball Valves and Butterfly Valve - Yahoo! Answers
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Other Answers (10)
What is difference between ball valves and butterfly valve?
Generally used in piping.7 years ago ( 2006-07-05 00:19:39 ) Report Abuse
kdg
Best Answer - Chosen by Voters
1. Ball valves are generally more expensive than butterfly valves.
2. Ball valves use a face seal, butterfly valves (usually) use an edge seal.
3. Ball valves can be rated up to Class 2500 (42.5MPa), butterfly valves are rarely used above Class 150 (2MPa).
4. Ball valves can seal on two faces and can be double block and bleed for positive bubble-tight sealing, butterfly valveshave a single seal and can never be assumed to be bubble-tight.
7 years ago ( 2006-07-05 02:00:34 ) Report Abuse
33%3 Votes
Chris H
do the math
7 years ago ( 2006-07-05 00:21:15 ) Report Abuse
0%0 Votes
david kb24 #1
The working mechanism is true to description. In the ball valve, it is an actual ball-shaped hunk of material that moves upand down in the valve seat to close and open the flow. In the butterfly valve, you have a disc-shaped piece of metal, that
can turn on a central axis doing same.
7 years ago ( 2006-07-05 00:23:17 ) Report Abuse
22%2 Votes
ladybuge...
Like the ladybug said.....I might add ball valves are far superior too!
7 years ago ( 2006-07-05 00:26:16 ) Report Abuse
11%1 Vote
Dr. HOUSE
ball valv's rotating part lookes a ball with a hole in it and a butterfly valv's rotating part looks like a plate (no hole)
7 years ago ( 2006-07-05 00:26:39 ) Report Abuse
0%0 Votes
Terry
A ball valve is a sphere with a hole through it attached to the handle of the valve. When the hole lines up with the
inlet/outlet the fluid flows; when the handle turns the hole 90 degrees to the inlet/outlet, the flow stops. The butterfly, orgated, valve is a round disk attached to the handle. When the disk is turned narrow to the inlet/outlet, flow occurs andstops when the disk is turned across the opening.
druid
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is difference between ball valves and butterfly valve? - Yahoo! Answers http://answers.yahoo.com/question/index?qid=20060705001939A
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A ball valve has a ball with a hole drilled through it when you turn the handle you line the hole up inside the valve to allow
fluid to flow turn the handle the other way the ball will block the fluid passage . A butterfly valve has a plate attached tothe handle when you turn the handle you spin the plate on its axes and it blocks fluid flow!
7 years ago ( 2006-07-05 00:30:50 ) Report Abuse
0%0 Votes
Andrew L
HiBall valves have a ball shaped rotating part with a hole in it which by turning that part the liquid flow rate could be set and
it is available in severalconfigurationsButterfly valve has a big flat circular plate as rotating part and just uses for on and off flows and can not be used toadjust liquid flow rate
Another difference is that ball valves could be mounted with controllers and actuators to form controll valves ,and theyare using a lot in process industeries.
Butterfly valves could not be on high pressure streams which is no limitation for ball valves
Source(s):
I can send u some drawings if u want
7 years ago ( 2006-07-05 00:52:01 ) Report Abuse
0%0 Votes
platinum...
Ball valves= Shuts down by screwing system
Betterfly valve= Shuts down by wing systemBoth works for same purpose they differ for their efficiency only..
7 years ago ( 2006-07-05 00:56:03 ) Report Abuse
0%0 Votes
Mike
The general description of the ball and butterfly valve in the answers so far are pretty accurate.
There are some errors or omissions.
Butterfly valves can be found for high pressures. I don't no the current limit but I am sure they can be found for pressuresof up to 1000 psi.
Unless specifically designed, neither is intended to be used for throttling or control service. They are primarily on/offvalves.
They can be found in a multitude of materials with many different types of seats and seat materials.
Either can be equipped with an actuator for automated service.
7 years ago ( 2006-07-05 08:12:47 ) Report Abuse
11%1 Vote
oil field trash
Butterfly Valve: a piece that rotates in the pipe 360 degreesBall Valve- a (circular) plate that goes up and down
7 years ago ( 2006-07-11 14:05:14 ) Report AbuseSprinkle...
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is difference between ball valves and butterfly valve? - Yahoo! Answers http://answers.yahoo.com/question/index?qid=20060705001939A
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7/30/2019 What is Difference Between Ball Valves and Butterfly Valve - Yahoo! Answers
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Home Mail News Sports Finance Weather Games Groups Answers Flickr
is difference between ball valves and butterfly valve? - Yahoo! Answers http://answers.yahoo.com/question/index?qid=20060705001939A
08/25/20