A steel-spring poppet with a rubber o-ring is the internal mechanism preventing water backflow

Item # 206AB 1

It also provides make-up water to the system in the event of system leaks

6x4"CLAY/CI-PVC FLEX COUPLING CLAY PIPExCAST IRON OR PVC

1 x ¾ SP x Slip Sch40 Reducer Bushing

5" DIAMOND CUTOFF WHEEL 100X LONGER LIFE TANK TO BOWL BOLT SET A steel-spring poppet with aSpyder Diamond Bite universal cut off wheels feature a diamond abrasive edge, combined with a shatter resistant steel core. Together, these ensure safe operation, reduced dust and debris and a much longer working life than typical wheels up to 100x more cuts. For use on most materials including steel, stainless steel, cast iron, rebar, masonry, ceramic tile, composites, and more.