Can the valve cages of electric/pneumatic control valves be interchanged? Can the valve cages from different manufacturers be interchanged?
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Can the valve cages of electric/pneumatic control valves be interchanged? Considering that electric and pneumatic systems are only related to the actuators, does it have any impact on the components of the valve body? Also, can the valve cages from different manufacturers be interchanged? Is it the case that valves of DN100 come with several types of valve cages, while those of DN200 use another set of valve cages?
Theoretically it is possible, but in practice it requires strong design and manufacturing capabilities. Although valves and actuators are two separate components, in fact, manufacturers design them with the aim of ensuring perfect compatibility between the two. If they are replaced arbitrarily, a special component often needs to be designed and manufactured for the connection part ； Similarly, there is also a matching issue regarding the installation of the valve stem in the valve housing. Moreover, the Cv value of the valve core and the flow channels in the valve housing are also matched to each other; this kind of matching cannot be achieved solely through metalworking techniques.
Another new term appears: “valve cage”: lol. Searching on Baidu, “cage-type” valves refer to those where the valve core is used to hold the sleeve, right? If it’s a valve core of this type, even if it can be replaced, a series of matching and grinding processes are still required. New term, just a guess – for reference only.
It can be replaced with one from the same manufacturer. Learn about KELK valves, sleeve interchangeability.
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Pneumatic and electric are merely differences in driving elements, and do not represent differences in valves. For valves with the same diameter and pressure, the valve body is identical, but the dimensions of the internal components vary depending on parameters such as flow rate and pressure difference. There are too many possibilities for different valve internals.