Author Question: How does a closed expansion tank work? A) It uses a flexible diaphragm with an air charge above ... (Read 45 times)

danielfitts88 · **on:** Jul 24, 2018

How does a closed expansion tank work?

A) It uses a flexible diaphragm with an air charge above the diaphragm.
B) The walls of the tank are made of a flexible material.
C) The top of the tank is open to the atmosphere.
D) Air is trapped at the top of the tank.

Question 2

How is the tubing used in ground-source systems joined?

A) Flare fittings B) CPVC cement C) Threaded fittings D) Thermal fusion