Q3

A hydrostatic test needs to be performed after_______

b)   A tank being exposed to high temperatures

Q4

The second stage of a regulator works as follows:

a)    A piston or diaphragm opens a valve releasing air from the tank

b)   A diaphragm opens a valve releasing air from the first stage

c)    Reduces the surrounding pressure

d)   Releases air continuously

Click next to reveal the answer