American Standard Ultima Manual Toilet Flush Valve, Diaphragm-Type, 1.1 gpf/4.2 Lpf - AMS-6147111

The Ultima manual flushometer is built for flushometer-style bowls with a 1-1/2 inch (38 mm) exposed top spud. If the bowl has a 3/4 inch spud (that is a urinal connection) or a concealed back spud, this valve is the wrong part for it. Check the bowl's inlet before ordering.

It roughs in at 11-1/2 inches (292 mm) from the centerline of the control stop to the centerline of the spud connection. That is the standard commercial water closet rough, so it drops onto most existing carrier and bowl layouts without moving the supply.

It flushes at 1.1 gpf (4.2 Lpf). Pair it with a bowl rated for 1.1 gallons. Putting a 1.1 gpf valve on a bowl engineered for 1.6 gpf is the usual cause of double-flush complaints in a retrofit, so match the bowl rating rather than the old valve.

Yes. The Ultima manual valve can be set up left- or right-handed, so the same part covers openings where the stop has to come in from the opposite wall or where a partition blocks the usual handle side. No separate left-hand model to order.

The non-hold-open handle is ADA compliant and shuts off automatically at the end of every flush, so a user cannot hold it open and run water. That matters for public restrooms in schools, healthcare, and government facilities where the accessible stall hardware gets inspected.

The diaphragm uses American Standard's EvoLast material, which is made to resist chlorine and chloramine so it does not deteriorate and fail early. The valve body is a proprietary brass alloy that resists dezincification, which is the other common failure in aggressive water. Between the two, it is aimed squarely at the repeat-diaphragm-replacement problem property managers see.

Run-on usually starts when the refill orifice in the diaphragm clogs with sediment and the valve never fully reseats. This one uses DynaClean, an integral wiper spring that scrubs the refill orifice on every single flush to keep it clear. It also has a high back pressure vacuum breaker, which helps stop the dripping you get at the breaker on systems with pressure swings.

Toilet. The Ultima 6147111 is a water closet flushometer at 1.1 gpf with an 11-1/2 inch rough-in. Urinal flushometers use a lower flush volume and a smaller spud, so do not cross them.

Manual, handle-operated, diaphragm type, in chrome. There is no battery or sensor to maintain. If you are standardizing a restroom on touchless operation, this is not that valve, but it is the direct manual counterpart for the same 1-1/2 inch top spud bowls.

The manufacturer part number is 6147111.002 for the chrome finish. That is the number to quote when matching other fixtures already installed in the building.