The gas flow into the high-pressure side regulator is dependent ...

[Bob-Dole]

The gas flow into the high-pressure side regulator is dependent on what two opposing forces?
 
  1. Gas pressure above the diaphragm
  2. Gas pressure at the diaphragm
  3. Spring tension below the diaphragm
  4. Spring tension above the diaphragm
  a. 1 and 3 c. 2 and 4
  b. 2 and 3 d. 1 and 4

Question 2

Which regulator supports the theory that gas pressure is gradually reduced as gas flows from a high-pressure source through a series of stages to the outlet?
 
  a. Single-stage regu-lator c. Preset regulator
  b. Flowmeter d. Multistage regulator

[ynlevi]

Answer to Question 1

ANS: A
When the force offered by the high-pressure gas above the diaphragm equals the force offered by spring tension, the diaphragm is straight and the inlet valve is closed.

Answer to Question 2

ANS: D
Gas from a compressed cylinder (e.g., 2200 psig) enters the first stage of a two-stage regulator, and the gas pressure is reduced to an intermediate pressure (e.g., 700 psig). This lower pressure gas then enters into the second stage of the regulator, where the gas pressure is further reduced to the desired working pressure (e.g., 50 psig) before the gas reaches the outlet.

[Bob-Dole]

Thank you

[ynlevi]

Happy to help you