Not so sure but at least a year ago the ball valves were significantly cheaper at Lowes comared to Home Depot. Same exact valves. From everything I've read on the forum over the years the blasted spider gasket in any manufacturers valve is a constant source of problems. The simple ball valve in the waste line is a cheap and easy fix. I went a little further because my waste line runs about 150' slightly underground to a stream and downhill about 10'. I added a check valve that vents to air so when I am backwashing and kill the pump the rushing and siphoning water simply bleeds air through the check valve so water flow from the filter is eliminated. The 150' of line simply drains out.
Al