What do angular travel and linear travel of electric control valves mean? ? ?
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I’m not sure about this yet; I hope someone with more experience can give me some advice.
Angle travel: 0 to 90 degrees of rotary motion, used to control angle-type valves such as ball valves and butterfly valves. Linear travel: This refers to up-and-down movement, used to control linear-type valves such as gate valves and globe valves. Both regulating and on/off types are available in both angle-type and linear-type actuators; in other words, whether it is a linear or angle-type actuator, if it is not of the on/off type then it is regulating type, while the on/off type moves from one point to another without any stops – for example, in the case of angle travel, it moves from 0 degrees to 90 degrees, or from 90 degrees to 0 degrees, with the valve either open or closed at all times. The adjustable type can stop at any angle between 0 degrees and 90 degrees, allowing for the adjustment of flow rate and pressure.
Actuators used with valve cores that move in a linear path are of the straight-stroke type, while those used with valve cores that move in a rotational path are of the angular-stroke type.
The main difference lies in whether the electric actuator used is of linear stroke or angular stroke type!