Pressure Regulator Types
What Is a Pressure Regulator?
A pressure regulator is a mechanical device designed to control either upstream or downstream pressure in response to changes in the system. These changes might include fluctuations in flow, pressure, temperature, or other factors that may occur during regular system operation. The regulator’s job is to maintain your desired system pressure. Importantly, regulators are different than valves, which control system flow rates and do not self-adjust. Regulators control pressure, not flow, and are self-adjusting.
Types of Regulators
There are two primary types of regulators: pressure-reducing regulators and back-pressure regulators.
- Pressure-reducing regulators control pressure to the process by sensing the outlet pressure and controlling their own downstream pressure
- Back-pressure regulators control pressure from the process by sensing the inlet pressure and controlling pressure from upstream
Your ideal choice of regulator depends on your process requirements. For example, if you need to reduce pressure from a high-pressure source before system media reaches the main process, a pressure-reducing regulator will do the job. Back-pressure regulators, by contrast, can help control and maintain upstream pressure by releasing excess pressure if system conditions cause levels to become higher than desired. Used in the right context, each type can help you maintain the desired pressures throughout your system.
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