A valve actuator
a) cannot be reverse acting
b) will always have one side of the diaphragm open to atmosphere
c) is a two-position device
d) position is a function of controller output
e) causes a valve to always fail open
Answer: D
A valve actuator
a) cannot be reverse acting
b) will always have one side of the diaphragm open to atmosphere
c) is a two-position device
d) position is a function of controller output
e) causes a valve to always fail open
Answer: D