sloan g2 flush valve retro kits sloan optima plus® g2 flush valves • closet valve operates at 3.5 gpf and 1.6 gpf urinal valve operates at 1.5 gpf and 1.0 gpf • complete valve assembly battery powered spud coupling res-c closet each ress-u urinal sloan regal® xl closet flush valves sloan sloan single pranviar zurn autoflush® sidemount with courtesy flush button retro fit kit closet or urinal