Why are zone valves incorporated into a hospital's central gas ...

[justinmsk]

Why are zone valves incorporated into a hospital's central gas piping systems?
 
  1. To terminate O2 delivery to an area in case of fire
  2. To allow selective maintenance without shutting the system down
  3. To allow variable pressure reduction throughout the system
  a. 1 and 2 only
  b. 1 and 3 only
  c. 2 and 3 only
  d. 1, 2, and 3

Question 2

What is the primary purpose of indexed connector systems?
 
  a. To prevent inadvertent misconnections between equipment
  b. To speed making connections between equipment
  c. To allow U.S. equipment to mate with foreign equipment
  d. To provide universal connections among all equipment

[Chocorrol77]

Answer to Question 1

ANS: A
Zone valves (Figure 40-12) throughout the system can be closed for system maintenance or in case of fire.

Answer to Question 2

ANS: A
These safety systems make misconnection between pieces of equipment nearly impossible.