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Join Date: Mar 2009
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Reverse Action Control and Direct Action Control

03/27/2009 9:06 AM

what is a Reverse and direct action?

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Guru
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Join Date: Mar 2005
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#1

Re: Reverse and direct action

03/27/2009 9:13 AM

Download this .pdf for a basic explanation of reverse action control and direct acting control.

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Power-User
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#2

Re: Reverse Action Control and Direct Action Control

03/30/2009 2:33 AM

Hi there,

Reverse action - the opposite to what your signal is doing. i.e. signal increases but valve closes because air signal is removed in proportion to your input signal.

Direct action - signal increases - valve opens.

Download the fischer control valve handbook from the emmerson web site. Youw ill get a much better understanding of the principle.

Regards,

Craig

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