There is NO need to upgrade or replace parts

Thrust Rating: 300 lb

Self-close cover is foot-treadle operated and an adjustable-rate pneumatic cylinder prevents the door from slamming shut when the treadle is released

The unit also includes self-regulating flow-control

Flow switch must be installed with tee fitting in horizontal position

Top Brand Ball Valve, PVC, Inline, 1-Piece, Pipe Size 1/4 in, Connection Type FNPT x FNPT - PVC 638-4F4F-F Multi-Roll Toilet Paper Dispenser There is NO need toThis ball valve features PVC construction. PVC, also known as polyvinyl chloride, is a synthetic plastic polymer with a rigid structure. PVC resists corrosion and most chemicals.