I would like to ask whether a three-way valve can switch the inlet Can it be used for diversion and convergence?
Thread Content
Suppose a certain process might encounter the following situations: Splitting scenarios: 1. A flows to B and C; 2. B flows to A and C; 3. C flows to A and B. Merging scenarios: 1. A and B flow to C; 2. A and C flow to B; 3. B and C flow to A. Can a three-way valve theoretically handle all of these scenarios? If it’s not possible to achieve the above various flow direction changes, how many valves or other devices are needed?
The principle is similar to that of shower faucets at home; such faucets can only switch between two channels. However, valves of this type are not reliable in terms of performance during operation. Alternatively, valves with multiple channels and multiple actuators can be used
A three-way valve is not feasible, as the structure of its valve core determines that the main flow path remains fixed; when the flow direction changes, the valve core experiences significant unbalanced forces, which can damage the internal components. Three branches and three ball valves – under less stringent conditions, this approach can be used, but it presents issues related to flow blocking, as well as the need to adjust the program configuration for flow direction changes and the coordination of the valves. The stability of such a fluid system and the reliability of the valves are relatively poor.
This post was last edited by Dipel NDIV on 2017-5-2 at 11:47; using a T-shaped tee solved both problems
The determining factor for your diversion isn’t the valve, right? It’s the source pressure of ABC; it is the pressure that determines its flow direction. . .
A T-type three-way ball valve can meet your requirements
Isn’t the function of a three-way ball valve to divert and combine flow? A T-type three-way ball valve can achieve this function.
This looks amazing~! Is there a state where everything is turned off!
Yes, but different process media have different pressures, which is why the above situation occurs
Just to confirm again, this valve can be used for diverting or combining flow under different conditions, right? In other words, it can be used in all 6 situations I mentioned, correct?
Sure, for example, if flow is from A to B and C, then the pressure source should be at A. If flow is from AB to C, the pressure source should be at AB