Threaded Sleeve Special Nut w/ Break Away Sleeve is used on hot water heaters. Usually the fitting is under the hot water heater in the pilot and burner area. Be sure to match the pipe size to the fitting. The fitting comes in 1/8, 3/16, 1/4, 5/16, and 3/8 sizes. Most hot water heaters use 1/4 inch size.
