Model a pressure regulator as a control valve in VisSim

[teeumup]

I am looking for data or an example of a self contained pressure regulator being setup as a control valve so it can be emulated in a VisSim dynamic computer model.

 

[Ashereng]

I am not a computer model expert by any stretch, but why would you model a regulator as a control valve?

A pressure reducing regulator produces a down stream pressure equal to the setpoint, as long as the upstream pressure is greater than or equal to the setpoint.
If the upstream pressure drops below the setpoint of the regulator, then the regulator acts like a piece of pipe (pressure in = pressure out).



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[JimCasey]

>>>A pressure reducing regulator produces a down stream pressure equal to the setpoint, as long as the upstream pressure is greater than or equal to the setpoint.
If the upstream pressure drops below the setpoint of the regulator, then the regulator acts like a piece of pipe (pressure in = pressure out).<<<<

Well, it'll act as a fixed restriction anyway. Most regulators have pretty low Cv values so even if they go wide open, the restriction of the regulator is equivalent to MANY diameters of straight pipe, or an orifice with a pretty small bore. Example: Published Cv of a 1" full-bore ball valve: 110. Cv of a 1" Globe control valve: 15. Cv of a 1" regulator: 2.3.