Melnor 65118-AMZ XT Metal Turbo Oscillating Sprinkler with QuickConnect Product Adapter Amazon Bundle, 4000 sq. ft. Coverage

Q: What is the maximum reach of spray? Distance from sprinkler head to farthest point where water reaches - with fairly standard water pressure?

You should understand that the distance of the spray is not only dependent on the sprinkler but also your water pressure so a definitive answer to your question can't be given.

Q: Can the width be adjusted?

Not on this style sprinkler. I wanted all metal parts as plastic becomes eroded by the alkaline water here. The adjustable ones feature plastic components in their construction.

Q: On average how many gallons per minute does the sprinkler use?

They range from 4 gallons per minute (gpm) from a 5/32-inch nozzle at 30 pounds of pressure to over 11 gpm from a 7/32-inch nozzle at 70 pounds of pressure.