American Standard Madera 15-Inch Toilet System With Manual Piston Flush Valve, 1.28 gpf/4.8 Lpf - AMS-2858128

The flush valve is included. Model 2858128.02 is sold as a complete toilet system: the elongated floor mount flushometer bowl plus a manual piston-operated flush valve rated 1.28 gpf/4.8 Lpf. You do not order a separate flushometer. The seat is not included, so budget for a commercial elongated seat with the bowl.

Top spud. The Madera 2858128 bowl is an elongated floor mount flushometer bowl with a top spud inlet, so the supply comes down to the valve and into the top of the bowl. If your existing rough-in is set up for a rear or back spud bowl, this one will not line up.

The Madera 2858128 has a 15 inch (381 mm) rim height, which is the standard-height bowl, not the ADA-compliant taller version. For an accessible stall you want a 16-1/2 inch rim height bowl instead. Note that rim height is measured without the seat, and a seat adds roughly a half inch.

The Madera 2858128 carries a maximum 1,000 gram MaP score, which is the top of the MaP test scale for solid waste removal in a single flush at 1.28 gpf. That is the number facility buyers look at when they are worried a low-flow fixture will double-flush in a busy public restroom.

DynaClean is an integral wiper spring inside the piston valve that scrubs the refill orifice on every flush. A clogged refill orifice is the usual cause of a flushometer running on, so keeping it clear is aimed directly at that failure. The handle is also non-hold open, so it shuts off automatically even if someone leans on it.

The Madera 2858128 ships with a manual piston-operated valve. Piston valves tolerate marginal water quality and debris better than diaphragm valves, which is why they get specified in schools, stadiums and older buildings. Diaphragm valves are the more common repair part on the shelf. If your maintenance crew already stocks diaphragm kits for the rest of the building, that is a real argument for staying with diaphragm rather than mixing.

Beyond the bowl and valve, you supply the elongated commercial seat (the system ships less seat), the closet bolts and wax or waxless seal for the flange, and the supply stop and rough-in connection feeding the valve. The spud connection at the bowl is top spud, so route the valve accordingly.

The bowl has a condensation channel built in, which catches sweat off the china rather than letting it run onto the floor. Conventional glaze is used on the bowl surface. Anywhere with cold supply water and warm humid air, that channel is the detail that keeps you from chasing puddles.

White only, ordered as 2858128.02. There is no other finish in this configuration, so if you are matching lavatories and urinals across a restroom, plan on standard white china.