Author Question: The two large classes of metering devices are: A) Fixed restrictions and broken restrictions. B) ... (Read 48 times)

abern · **on:** Jul 24, 2018

The two large classes of metering devices are:

A) Fixed restrictions and broken restrictions.
B) Hand valves and automatic valves.
C) Floats and valves.
D) Fixed restrictions and thermostatic expansion valves.

Question 2

When a manual service valve is backseat cracked:

A) Both the service port and the line are open to the system.
B) The service port is open and the system is closed to the line.
C) The service port is closed and the system is open to the line.
D) Both the service port and the line are closed to the system.