Regulating valve internal component type
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I would like to ask everyone: what is the difference between the \"porous type\" and the \"plunger type\" of internal components in control valves? 【1】Differences in usage scenarios 【2】Differences in appearance; it would be great if two pictures could be provided. Thank you everyone
You mean a sleeve valve, right? It is used in high-pressure operating environments, such as boiler feed water. The porous structure is intended to reduce the resistance exerted on the valve by unbalanced forces, thereby decreasing the torque required of the actuator; as a result, the actuator can be much smaller ； As for the plunger, it usually has one hole; the valve seat has one hole, and the valve core also has one hole – those with straight stroke have more holes
The first type you mentioned is likely used in places where there is high pressure, such as with boiler water or steam; the second type is used much less often, generally in situations involving a lot of solids, particles, or powders. There isn’t much difference in their appearance.