I am sizing regulators (Fisher, specifically) Their technical bulletins give guidance such as IEC constants for sizing just as you would any other valve, but they also provide data for calculating 'wide open flow for relief valve calculations'. I do not know what this means. Is this the maximum flow in normal operation or is this a special condition. Is there something I am missing about sizing a regulator? I was assuming that you would treat it as you would any other valve. RE: Sizing a regulator (Mechanical) 1 Apr 11 21:12.
If you size a regulator properly, it should not operate at or near wide open. It would be a poor sizing job.However, some regulators are used as back pressure regulators that function almost like relief valves and it might be handy to know the full open flow characteristics of the valve for such a condition.I like my valves and regulators to work in the 60-80% open range normally. Find your 'sweet spot' and size your regulator to operate there and run a set of 'wide open' flow calculations as a 'Bravo Sierra' check and hope you never have to operate there.rmwRE: Sizing a regulator (Specifier/Regulator) 4 Apr 11 11:19. Psafety,That may be a good point. Frankly, I am not accustomed to thinking of a regulator as a relief device. The tanks and vessels I deal with have their own dedicated single purpose relief valves for that purpose.
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I have put regulators on vessels that had a relief valve but not wanting to be popping the relief valve constantly, I sized the regulator to do the job instead of the relief valve when it could.The regulator however normally did not operate in 'relieving flow' but in back pressure regulating flow which weren't the same thing. Since its primary job was back pressure control, the sizing was optimized to controlling that flow.rmw RE: Sizing a regulator (Chemical).
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This is the home page for your valve software selections. Feel free to download the latest version ofour valve sizing programs.Valve sizing programs are used to help engineers, technical sales representatives, and other customers correctlysize a valve for a specific application and generate a report about the product they have sized. Once the valve issized, you are able to configure the selections for that valve. This information is then reported as output from the programthat can be used to communicate with the factory what your valve requirements are and help guide you in the direction ofthe particular valve you need for your application.Choices:PRV 2SIZE Pressure Relief Valve Software is an integrated valve sizing, selection and configuration platform for Anderson Greenwood, Crosby and Varec brand overpressure protection valves and for Yarway brand Automatic Recirculation Control Valve (ARC) valves.