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Ask for a name of a pneumatic symbol 1

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giangnguyen92

giangnguyen92

Aerospace
Joined
Oct 3, 2019
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Location
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Hi everyone,

As I am reading the paper for my work about cooling air path, there is a pneumatic symbol at the end of the air path that I do not understand (there also lack of necessary wording description).
I attach its picture here and the system drawing here.
It seems like a filter but the hydraulic filter symbol has different orient shape.
I also have tried to search for it on ISO 1219 but finding it nowhere.

So I would like to ask if anyone of you has faced it and tell me what it is.

Thanks for your help.
Air_flow_path_dajxr7.jpg

Ask_for_hydraulic_symbols_linrzo.jpg
 
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IMO, the symbol looks like some sort of the "filter".
 
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@mk3223,

I guess it is a filter as well. But I see nothing similar by searching on various standards.
 
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From what i can see, its a pneumatic piston operated ON/OFF valve.

The valve may be a ball / butterfly / knife gate etc.
 
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Dear srini1785,

The right part of it seems like the valve, but what I would like to ask is the left part (the square shape with oblique dotted line).
Have you ever seen this symbol?
 
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@IceStationZebra: Thanks so much for your comment. This seems fit best to my case.
 
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@IceStationZebra: Do you think those different filter symbols represent any filter property difference?
 
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