Is pressure regulator size directly proportional to inlet or outlet pressure? In other words, will the size of the pressure regulator get bigger if the inlet pressure is higher?
The size of a pressure regulator is generally related to differential pressure (defined as P1 inlet - P2 outlet in absolute values) and max flowrate. There are two conditions that you need to take into consideration, Sub-critical drop when P2>P1/2 and Critical drop P2<=P1/2 (always consider absolute pressures), in the first case the sizing is mainly influenced by P1-P2, in the second P1 is dominant. Nevertheless, depending on the application, there are other factors which must be considered for a proper sizing: orifice size, min flowrate, noise level, accuracy and other requirements which can influence the size choice.
In general, Inlet pressure increase will typically reduce the size of the regulator.
This is the official online community site of the Emerson Global Users Exchange, a forum for the free exchange of non-proprietary information among the global user community of all Emerson Automation Solution's products and services. Our goal is to improve the efficiency and use of automation systems and solutions employed at members’ facilities by sharing our knowledge, experiences, and application information.
User Groups |
World Areas |
Community Guidelines |
Legal Information |
Contact Community Manager
Website translation provided by
© 2015-2019 Emerson Global Users Exchange. All rights reserved.