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Associate

Join Date: Sep 2008
Location: Vadodara,India
Posts: 40

Valve selection

09/17/2008 3:01 AM

what is selection criteria of valve like..diaphragm valve,ball valve,butterfly valve,check valve...

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Anonymous Poster
#1

Re: Valve selection

09/17/2008 8:11 AM

Maybe this link can help you.

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Power-User
Engineering Fields - Mechanical Engineering - New Member Technical Fields - Technical Writing - New Member

Join Date: May 2007
Location: Parallel 45
Posts: 226
Good Answers: 21
#2

Re: Valve selection

09/17/2008 8:21 AM

Assume we are tooking about a new project. The designer or licensor will issue a technical data sheet for the valve you need, of course according to unit service. Using this data sheet your procurement department will order the new valves.

Other point of view is the fluid and parameters will state what kind of valves need your service. Any way each vendor has a catalog for produced valves and recommended service.

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Associate

Join Date: Sep 2008
Location: Vadodara,India
Posts: 40
#3
In reply to #2

Re: Valve selection

09/18/2008 8:14 AM

Thanks for reply...but I want to know is there any selection criteria for example where I should take only butterfly valve and not any other ........

is there any thumb rule or depends up on flow , pressure or type of control required we have to selct the valve.

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Participant

Join Date: Sep 2008
Posts: 3
#4

Re: Valve selection

09/18/2008 10:46 PM

Gate Valves:

Quick Opening valve control and used in locations where -normally fully open/closed condition, non – throttling and frequent operation. Generally Oil, gas, air, slurries, heavy liquids, steam, non condensing gases, and corrosive liquids

Globe Valves:
Linear and Equal percentage valve control and in locations where throttling service/flow regulation, frequent operation. Generally for Liquids, vapors, gases, corrosive substances, slurries. High pressure drop will be more.

Ball Valves:
Quick opening and linear valve control used in location - fully open/closed, limited-throttling, higher temperature fluids. Generally for Most liquids, high temperatures, slurries

Butterfly Valves:
Linear, Equal percentage valve control, and used in location like fully open/closed or throttling services, frequent operation, Minimal fluid trapping in line. Generally for Liquids, gases, slurries, liquids with suspended solids

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