Which best describes a spring-loaded diaphragm actuator

Which best describes a spring-loaded diaphragm actuator

a) It has a diaphragm and a diaphragm plate connected to an actuator stem
b) The adjusting spring allows external setting or adjustment of the initial spring compression
c) It has no springs and is often used in applications requiring a valve positioner
d) They are employed in small size systems where on and off operation is required
e) The spring is connected to the diaphragm by the stem

Show Answer

Answer: a