Which of the following safety features may be incorporated into a reducing valve?
I. American standard safety system threads
II. pin index safety system connections
III. diameter index safety system threads
IV. a pressure relief for each stage of pressure reduction

Question

Quizplus · Accepted Answer

All of the listed safety features may be incorporated into a reducing valve. American standard safety system threads and diameter index safety system threads ensure proper connection to gas cylinders. Pin index safety system connections provide additional safety by requiring a specific alignment before gas flow can occur. A pressure relief for each stage of pressure reduction ensures that if pressure builds up beyond a certain point, it can be safely released.

Which of the Following Safety Features May Be Incorporated into a Reducing