An expansion tank can hold how many gallons of water if the tank is 18″ diameter and 36″ long. Note: 1 cubic foot equals 7.48 gal and 1728 cubic inches.

An expansion tank can hold how many gallons of water if the tank is 18″ diameter and 36″ long. Note: 1 cubic foot equals 7.48 gal and 1728 cubic inches.