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josej
Power-User

Join Date: Mar 2008
Location: Mumbai
Posts: 250
Good Answers: 2

Actuator Sizing

11/16/2011 4:00 AM

Hi,

For Control Valve actuator sizing , shut of pressure should be considered as Process Design pressure eg 3.0 barg , or line class pressure (Class 150 #)

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PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
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#1

Re: Actuator Sizing

11/16/2011 5:10 AM

Why not give the data to a local valves distributor and let that operation size and select the actuator?

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lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#2

Re: Actuator Sizing

11/16/2011 9:30 AM

I agree with PWSlack. Shut off pressure should be whatever the process requires.

Give your valve supplier adequate information and he will give you proper feedback.

It's OK to tell the supplier that you don't know how to size the actuator. Two minutes into your conversation he will know that anyway.
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