Valve flow direction
Thread Content
I would like to ask everyone: when installing valves, which types of valves do not require consideration of flow direction?
The last edit to this post was made by The boss is serving congee on 2019-6-12 at 09:28. The first thing that came to mind were fixed ball valves and gate valves, which provide dual sealing and can be installed in any way! There are others as well; I’ll keep watching quietly for now!
Ball valves； Soft-sealed centerline butterfly valves ； Gate valves ； Plug valves ；
The valve body that needs to be considered should have arrows, right?
Coaxial valves need not be considered, as they are subjected to pressure from both sides
It’s better to look at the arrows; the commonly used valves are check valves and globe valves, which indicate the flow direction
Gate valves, check valves (one-way valves), butterfly valves, V-ball valves, …… all require a specific direction of flow
Gate valves, butterfly valves, plug valves. Ball valves depend on the requirements (floating ball valves generally have no requirement regarding flow direction, while fixed ball valves come with DBB, DIB-1, and DIB-2 seat types; the DBB seat has no requirement regarding flow direction). Gate valves usually also do not have such requirements; however, if the opening and closing forces are of concern, then the flow direction needs to be taken into account
There’s no problem with this; generally, we mark arrows on valves that allow flow in one direction only, so there’s no need to worry