The flow rate is 2 quarts per minute. There are 4 quarts in a US gallon, so 2 quarts ÷ 4 quarts per US gallon = 0.5 gallons per minute.
There are 60 seconds in a minute, so the flow rate is 0.5 gallons per minute ÷ 60 seconds per minute = 0.0083 gallons per second.
2qt/min x 1gal/4qt x 1min/60sec= 0.0083 gal/sec