here are 2 kinds of pressure regulator valves, the one that maintain downstream pressure and therefore the alternative one that maintain upstream pressure. The pressure regulator valves typically utilized in the method application that doesn’t want an correct pressure management (fluctuation or offset up to twenty is acceptable). So, really how this pressure regulator valve operate to keep up downstream or upstream pressure?
Pressure regulator valves maintain downstream pressure
The most used pressure regulator valves are the valves that maintain its downstream pressure. This valve may be a normally open valve. Here is that the step by step operating principle of this valve.
Valve didn’t operate; the valve is on the Normally Open position.
The system begin to operate; the fluid flow comes in through the valve and engineered a pressure within the downstream of the valve.
Since the downstream pressure keep rises, it goes to push the diaphragm of the valve through the feedback line. When the diaphragm pushed out, the stem that holds the plug additionally goes up (start to close).
When the downstream pressure of the valve reaches higher than the set pressure, it pushes the diaphragm to its most enlargement and caused the plug to maneuver up and shut the valves.
Once the downstream pressure goes down, the diaphragms can|will} lesser push out therefore the plug slowly move down and therefore the valve will open.
Above mechanism (from purpose no. 2) is repeated once more and thus on.
Pressure regulator valves maintain upstream pressure
The other style of pressure regulator valve is that the one that maintain upstream pressure. The operating principle of this valve is same with the valves that maintain downstream pressure except the plug and therefore the flow in that place inversely. Here is that the step by step operating principle of this valve.
Valve didn’t operate; the valve is on the Normally shut position.
The system begin to operate; the fluid flow didn’t have the valve (Normally shut valve) and engineered an upstream pressure of the valve.
Since the upstream pressure keep rises, it goes to push the diaphragm of the valve through the feedback line.
When the upstream pressure of the valve reaches higher than the set pressure, it pushes the diaphragm to its most enlargement and caused the plug to maneuver up and open the valves.
Once the upstream pressure goes down, the diaphragm will lesser push out therefore the plug slowly move down and shut the valve.
Above mechanism (from purpose no. 2) is repeated once more and thus on.
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