1.

Which is the symbol for "pneumatic control valve" ?

A. <img src="/_files/images/chemical-engineering/process-control/344-48-1.png">
B. <img src="/_files/images/chemical-engineering/process-control/344-48-2.png">
C. <img src="/_files/images/chemical-engineering/process-control/344-48-3.png">
D. none of these
Answer» B. <img src="/_files/images/chemical-engineering/process-control/344-48-2.png">


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