Can the control valve be installed at an angle? Is it compliant?
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As the title suggests: Some control valves on my installation are installed at an angle (since the branch lines are above; they were welded first, and due to lack of space, they had to be installed at an angle). Is this in compliance with the regulations? Do I need to reinstall it?
There are no problems, as long as the valve stem is properly supported! The small valve is easy to handle.
This post was last edited by Marginated on 2012-4-7 15:22. We also have some that are installed at an angle, and they work just fine; however, if the valve stem is heavy, I think the friction might be greater.
Actually, it’s not a big problem to install devices at an inclined angle in general. If the valves are large, as long as the support is properly arranged to facilitate maintenance, that’s sufficient. In fact, we even have to install the control butterfly valves used for gas at an inclined angle, haha!
It depends on what type of valve it is, what its diameter is, and what the medium is. For example, a large-diameter cage-type control valve cannot be installed at an angle when used to measure steam.
First, the control valve is not installed vertically, and a fixing device must be attached to the actuator； Secondly, if the control valve is not installed vertically, it is necessary to discuss this with the manufacturer at the time of ordering; the manufacturer will take these factors into account during the design process, including support, guidance, stress distribution, and the selection of the spring range for the actuator. Otherwise, faults in the control valve are likely to occur.
We used a cascade control valve on site, of the Y-type; its actuator is angled at 45 degrees. The manufacturer explained that this design saves more space in terms of flow path layout, with everything else remaining the same. Under verification.