American Standard Ultima Selectronic Touchless Toilet Flush Valve, Piston-Type, PWRX, 1.6 gpf/6.0 Lpf - AMS-6066161

11-1/2 inches (292 mm) from the bowl spud centerline to the supply. That matters on a retrofit: if the existing stop and supply are set for a shorter rough-in, you'll be cutting or refitting the supply tube to land the valve body correctly.

No electrical rough-in needed. The valve ships with a PWRX battery installed inside the valve body, rated by American Standard for 10 years of service, so there is no transformer, no conduit, and no outlet to run. That is the main reason it goes into retrofits where pulling power to each fixture isn't practical.

Two things cover it. There is a fully mechanical manual override that flushes without any power, so a restroom stays usable. And the valve is fail-safe: it closes automatically if power or water pressure is lost, so it won't stick open and flood or run continuously.

Toilet (water closet) only, at 1.6 gpf / 6.0 Lpf. Don't put it on a urinal, urinals use much lower flush volumes and a separate valve. If your spec calls for a 1.28 gpf high-efficiency closet, this valve does not meet that volume.

Yes, provided the bowl has the 1-1/2 inch exposed top spud and you can meet the 11-1/2 inch rough-in. Because the sensor and battery are in the valve, there's no wiring to add, so the changeover is a plumbing job only. Keep in mind the manual override lever behavior replaces the old handle for staff use.

The Ultima Selectronic here is a piston-type valve. Piston designs tend to be the choice where water quality is inconsistent or debris is a concern, since there is no flexible diaphragm to foul. Diaphragm valves are the other common commercial style. If a facility has already standardized on piston rebuild kits, staying piston keeps one parts stock across the building.

That's what the DynaClean feature targets. An integral wiper spring scrubs the refill orifice on every flush, so the orifice doesn't silt up and hold the valve open. Run-on from a clogged refill orifice is the usual cause of a flushometer that never shuts off, and this is a mechanical fix for it rather than a maintenance schedule.

One configuration: polished chrome, American Standard part number 6066161.002. Chrome is the standard commercial restroom finish, so it matches most existing exposed flushometers and supply stops already in the room.

The body uses a proprietary brass alloy that resists dezincification, which is the failure mode where zinc leaches out of standard brass on aggressive water and the casting turns porous and weeps. That's a durability point worth weighing on high-traffic public restrooms and older buildings.