Regarding the flow direction of the control valve and the pipeline
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The manager asked me to look at the piping diagram and then check the manufacturer’s information for the control valve (see the figure below), and to determine from that information which flow direction is applicable. What does this mean? As a newbie, I don’t understand the purpose of doing this; could everyone take a look?
The two diagrams are the same; both show a flow closure.
The direction of the arrow... As for its meaning, you can look up what \"open flow\" and \"closed flow\" mean
I just asked my supervisor, and now I understand it; the concern is that if the locator is placed too close to the wall or too close to the equipment, there won’t be enough space for wiring or repairs in the future. So it’s necessary to look at the piping diagram and examine the pipes and equipment in the surrounding area to determine which method is more suitable for on-site installation.
One locator is installed on the inlet side, and one on the outlet side.
These two pictures are the same. Control valves are categorized as flow-open or flow-close; generally, the flow-open type is more common. A special case involves using a flow gate, such as in high-pressure situations. Regarding the post below by the original poster, in fact, for control valves, it is possible to adjust the direction whether it is through the upper valve cover, the actuator, or the solenoid valve
Sleeve (cage) valve from high to low, flow direction FLOW-DOWN (flow shut-off), two identical ones!