American Standard Ultima Selectronic Concealed Toilet Flush Valve, Base Model, Piston-Type, 1.6 gpf/6.0 Lpf - AMS-606B261

No. The power kit for the 606B261 Selectronic concealed flush valve is sold separately, so you need to order it along with the valve. Without it the sensor will not operate, though the valve does include a fully mechanical manual override that flushes even with no power.

It is built for flushometer bowls with a 1-1/2 inch (38 mm) exposed back spud. A bowl with a top spud, or any tank-type toilet, is not a match.

No. The 606B261 is a concealed valve intended for installations with rear access, so you need a chase or accessible space behind the fixture to mount and service it. In a solid wall restroom with no rear access, use an exposed flushometer instead.

It flushes at 1.6 gpf / 6.0 Lpf. If your project specifies a 1.28 gpf high-efficiency water closet, this is not the valve for that spec.

Only a 6 x 6 inch (152 x 152 mm) chrome cover plate, which is included with the valve. The body, piston and sensor wiring stay behind the wall.

Run-on usually starts when the refill orifice fouls with scale or debris and the valve cannot fully close. The 606B261 uses DynaClean self-cleaning wiper spring technology, an integral wiper spring that cleans the refill orifice on every flush to help prevent run-on. That matters in high-traffic restrooms where a single running valve wastes water continuously.

It is a piston-type flush valve. Pistons use a cup and seal assembly rather than a flexible diaphragm, so your rebuild parts and spare kits for this valve are piston kits, not diaphragm kits. Stock accordingly if you standardize a building on it.

The manufacturer part number is 606B261.007. It is the base model of the concealed Selectronic line, ordered as a single configuration with no finish selection since the visible chrome cover plate comes with it.

With the Selectronic 606B261 the fixture still flushes. It has a fully mechanical manual override that operates without power, so a tripped circuit or dead transformer does not take the water closet out of service. Touchless sensing itself needs the separately purchased power kit.

The valve body uses a proprietary brass alloy that resists dezincification, the corrosion mode that eats zinc out of ordinary brass and leads to leaks and failed castings. It is a commercial-rated part, not a residential one.

The valve is listed at 15.258 pounds, with a product length of 19.875 inches, width of 16 inches and height of 8.31 inches. Useful for planning the chase opening and for one-person handling on a ladder behind the wall.