Refer to the drawing of a pneumatically-operated valve. The valve actuator may be shown with or without air pressure applied to it

Refer to the drawing of a pneumatically-operated valve (see figure below).

The valve actuator may be shown with or without air pressure applied to it.

Which one of the following describes the type of valve shown, and the fail position on loss of air to the actuator?

hydraulically-operated valve -PG-42

Show Answer

Answer: C

Share your understanding of this question with the correct explanation.

1 Like