An "E" size cylinder is turned on,and the flowmeter is off.Which of the following is (are)the most likely cause(s)of a hissing sound?
1)A cracked flowmeter
2)Inadequate pressure in the cylinder
3)An obstruction at the regulator outlet
4)A leak in the connection between the yoke and the cylinder opening

Question

Quizplus · Accepted Answer

A hissing noise means that there is a leak somewhere in the system.Typically,that will occur between the yoke and the cylinder opening or if there is a crack in the flowmeter.Inadequate pressure or an obstruction would not cause a hissing sound.

An "E" Size Cylinder Is Turned On,and the Flowmeter Is