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Stuck up with this valve symbol

Stuck up with this valve symbol

Stuck up with this valve symbol

Hello everybody,

I need your advice regarding the valve symbol in the attached picture. I’ve come across this valve in a project but fail to identify what it actually is. Hope someone would be able to name this valve and hopefully identify some source as well. Btw this is not a shuttle valve.

RE: Stuck up with this valve symbol

I guess I would call it a fixed flow restrictor with bi-directional excess flow check valves. The check valve would close when the deltaP across the flow restriction exceeds the check valve spring force.


RE: Stuck up with this valve symbol

I agree with Hydtools. It appears to be a bi-directional excess flow valve. The ball-checks will close if flow exceeds a set-point. The orifice allows the valve to reset open when pressure is reduced.

RE: Stuck up with this valve symbol

Thanks hydtools and Compositepro. I also guessed the operation to be so. However, I was not able to name the valve the way you both did. Do you know of any pneumatic valve manufacturer with this product in their range? Would appreciate your help.

RE: Stuck up with this valve symbol

Thanks for everybody. I have googled many manufacturers. Thanks once again for the great help.

RE: Stuck up with this valve symbol

I wonder if it could provide a damping function for a double-ended cylinder which is moved by some external force.


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