How to Select A Butterfly Valve   Image Credit: Assured Automation| Grainger| Viza Valves     Butterfly valves are quarter-turn rotary motion valves used as throttling valves to control flow through a system. They can be used with many different media. Butterfly valves offer several advantages including quarter-turn, openness for less plugging, and good control capabilities. They may be used in a wide variety of chemical services, are available with small dimensions...
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Q & A on Butterfly Valves

We asked our users for their input on Butterfly Valves. Here are the results of 60 users familiar with Butterfly Valves.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing butterfly valve design?
10 answers
Answers:
Computerized design is influencing the new technology. Sizing calculations are very easy with the help of computer by putting the all process parameters we are getting the results very fast.
~SHIV SONI, HOD -Instrumentation, , Talavli, Raigad, , Maharashtra, INDIA
Ability to maintain exacting machine tolerances on the best valves.
~James C, Marketing/Sales, Houston, TX
Materials like WC12-A applications on a metal seated design.
~Sergio Landeros, General Management, Nuevo leon, Mexico
Triple Offset Zero Leakage shut off Butterfly valve.
~Hadi Suranto, Project Engineer, Jakarta, Indonesia
Water cooling and desalination system.
~Jeddah, Saudi Arabia
Sealing of butterfly valve.
~Pratap singh C, Design Engineer, Gugaon, India
Customer applications
~Pfv supplier, Dayton, OH
Seals and longevity
~Engineering Consultant, Calgary, Canada
Not knowing
~Lalit monpara M, Engineering Consultant, Bhavnagar( gujarat) india, India
Dunno
~Alistair P, Maintenance Engineer, Nelson, New Zealand

Q:
From your perspective, which companies are creating the most innovative butterfly valves?
10 answers
Answers:
Fisher, Tyco, Metso, Valtek, OHL, Mascot .
~SHIV SONI, HOD -Instrumentation, , Talavli, Raigad, , Maharashtra, INDIA
Weir, Velan, Tyco
~Sergio Landeros, General Management, Nuevo leon, Mexico
Tyco with VANESSA
~Hadi Suranto, Project Engineer, Jakarta, Indonesia
KSB-Amri & Velan
~James C, Marketing/Sales, Houston, TX
Keystone & Nibco
~Pfv supplier, Dayton, OH
Flowserve, Audco
~Pratap singh C, Design Engineer, Gugaon, India
Crane bray
~Engineering Consultant, Calgary, Canada
Danfos
~Lalit monpara M, Engineering Consultant, Bhavnagar( gujarat) india, India
Dunno.
~Alistair P, Maintenance Engineer, Nelson, New Zealand
Kubota
~Jeddah, Saudi Arabia

Applications and UseTop

Q:
What are some of the applications you have used butterfly valves for?
18 answers
Answers:
Pump and Vessel isolation on: Chlorine gas, HCl, Sulfuric, Ultrapure water, Gypsum slurry, Power plant Condenser isolation, Seawater intake/supply, Caustic, Brine, Pulp Stock, ...
~James C, Marketing/Sales, Houston, TX
We have used butterfly valve for process application for gas flow, temp & pressure control.
~SHIV SONI, HOD -Instrumentation, , Talavli, Raigad, , Maharashtra, INDIA
Water, steam, tight shut off applications, oil, emergency systems
~Sergio Landeros, General Management, Nuevo leon, Mexico
Fire protection mechanical services such as HVAC pulp processing
~General Corporate Mgmt, Peterborough, United Kingdom
Plant Raw water Demineralization Plant and Fire water system
~Engineering, Consulting, PORT HARCOURT, Nigeria
We are using butter fly valves for water pipe line.
~Architect/Builder/Contractor, GURGAON, India
Cooling tower water systems, chilled water systems
~Engineering, Consulting, Toledo, OH
As Flow Control, Regulating, Isolating
~Engineering, Other, Lautoka, Fiji
Geothermal steamfield facilities
~Hadi Suranto, Project Engineer, Jakarta, Indonesia
Seawater cooling pipeline system
~Jeddah, Saudi Arabia
Water line after pump discharge
~Pratap singh C, Design Engineer, Gugaon, India
Water and chemical applications
~Pfv supplier, Dayton, OH
Nuclear, cryogenic, commercial
~Engineering, Process/Production, Montreal, Canada
Closed and open water systems
~Engineering Consultant, Calgary, Canada
Water control for irrigation
~Alistair P, Maintenance Engineer, Nelson, New Zealand
Repair of transformers
~Purchasing, Jubail Industrial, Saudi Arabia
Ship ballast system
~Lalit monpara M, Engineering Consultant, Bhavnagar( gujarat) india, India
Water truck
~Manufacturing, Channelview, TX

Q:
Please share with us any “non-standard” applications that butterfly valves have been used for.
3 answers
Answers:
For large size Flange connection butterfly valve > 24" there are two type of flange connection ANSI B16.47 Series A and Series B, the flange connection to be meet with this. Purchaser and Manufacturer should aware with this.
~Hadi Suranto, Project Engineer, Jakarta, Indonesia
OEM's usually have different applications.
~Pfv supplier, Dayton, OH
Emergency systems in refineries.
~Sergio Landeros, General Management, Nuevo leon, Mexico

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of butterfly valves?
3 answers
Answers:
Cameron - the small metal on metal seat that is so easily damaged and then the valve failed immediately on usage. Also they took no ownership of the issue.
~Engineering Consultant, Calgary, Canada
The non linear opening catches some people out. They let too much through too soon, thinking that 50% of the turns mean 50% of the flow.
~Alistair P, Maintenance Engineer, Nelson, New Zealand
People try to use them for throttling & they don't last long.
~Pfv supplier, Dayton, OH

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
7 answers
Answers:
Never corrode, never wear out and start leaking Handle silt Handle being set in one position for years and still work when required.
~Alistair P, Maintenance Engineer, Nelson, New Zealand
For bigger valve above 12 inch size seat of valve coagulates if you install vertical upward in horizontal line.
~Pratap singh C, Design Engineer, Gugaon, India
This product is required for process isolation, control , regulation purpose.
~SHIV SONI, HOD -Instrumentation, , Talavli, Raigad, , Maharashtra, INDIA
Manufacturer to design or integrate the actuation for the valve.
~Sergio Landeros, General Management, Nuevo leon, Mexico
Zero Leakage Butterfly Valve for 100% Isolation
~Hadi Suranto, Project Engineer, Jakarta, Indonesia
Don't really have one.
~Pfv supplier, Dayton, OH
Automatic control
~Jeddah, Saudi Arabia

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of butterfly valves?
5 answers
Answers:
Be careful who you get to install them. I've seen too many jammed between flanges with the rubber seals pushed out of place. The rubber seal eventually gets sucked through past the butterfly.
~Alistair P, Maintenance Engineer, Nelson, New Zealand
Mainly on triple offset design, solid seal ring in not the best and only option, the laminated seal works and perform excellent.
~Sergio Landeros, General Management, Nuevo leon, Mexico
Understanding the shut off pressures on dead end service.
~Engineering Consultant, Calgary, Canada
Sizing, MOC , & process conditions
~SHIV SONI, HOD -Instrumentation, , Talavli, Raigad, , Maharashtra, INDIA
Examine technicality thoroughly.
~Lalit monpara M, Engineering Consultant, Bhavnagar( gujarat) india, India

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using butterfly valves?
4 answers
Answers:
Do not focus on one manufacturer design, there are various manufacturers making improvements in this type of valves with great features and benefits.
~Sergio Landeros, General Management, Nuevo leon, Mexico
Before buying, check the technical specification and process requirement.
~SHIV SONI, HOD -Instrumentation, , Talavli, Raigad, , Maharashtra, INDIA
Have had disastrous results recently with Cameron Valves.
~Engineering Consultant, Calgary, Canada
Not really
~Pfv supplier, Dayton, OH


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