American Standard Monterrey 8-Inch Widespread 8-inch Reach Gooseneck Faucet With Wrist Blade Handles 1.5 gpm/5.7 Lpm Laminar Flow in Spout Base - AMS-6540188

It's an 8-inch widespread configuration, so the deck needs three holes on 8-inch centers: two valve bodies plus the center gooseneck spout. The valve bodies are cast brass and come with 8-inch rigid copper connections tying them to the spout, so the spacing is fixed rather than adjustable. If your sink is drilled 4-inch centerset, this is the wrong faucet for it.

The inlet shanks are 1/2-inch (13 mm) male threaded with brass coupling nuts supplied. That mates to standard 1/2-inch female supply risers or stops adapters. Nothing proprietary to source, but the coupling nuts are part of the faucet, so don't discard them during rough-in.

Either one. The gooseneck is field-convertible rigid or swivel, so the installer decides on site. In a patient room or exam sink where you want the spout parked over the bowl and not swung aside, set it rigid; for a utility or scrub sink where staff need to clear the basin, set it swivel. Reach is 8 inches (203 mm) either way.

There is no aerator on the spout end. The Monterrey 6540188 uses laminar flow control located in the spout base with a plain spout end, which is the arrangement facilities commonly specify where aerators are discouraged because of the screen surface. Flow is held at 1.5 gpm / 5.7 Lpm by a pressure-compensating regulator, so output stays consistent as line pressure varies.

That's what they're built for. The wrist blades are vandal-resistant and carry red and blue temperature indicators, so they stand up to heavy public traffic and stay legible for users. Wrist blades are also what a facility specifies when the sink has to be operated without gripping, common in clinical and food-service settings.

Washerless ceramic disc valves. There are no rubber washers to compress and fail, which is why maintenance departments standardize on ceramic disc in high-cycle restrooms. The valve bodies themselves are cast brass.

It ships in chrome, ordered as American Standard part 6540188.002. Chrome is the single finish offered on this model, which makes it straightforward to match across a floor of identical openings.

Reach is 8 inches (203 mm) from the spout base outward, which places the discharge well into a standard commercial lavatory or scrub basin. Measure from your center hole to the middle of the bowl: if that distance is more than 8 inches, the stream lands short of center and you want a longer-reach spout instead.

1.5 gpm / 5.7 Lpm is a water-conserving rate and is the normal spec for hand-washing lavatories. Because the regulator is pressure-compensating, the stream does not surge on a high-pressure main or collapse when other fixtures draw, and the laminar flow control produces a clear non-splashing column rather than an aerated spray. If the sink is being used to fill buckets or pots, a low-flow lavatory faucet is the wrong tool and you want a fill-rated utility faucet.