American Standard Colony PRO 1.75 gpm/6.6 L/min Shower Trim Kit With Water-Saving Showerhead, Double Ceramic Pressure Balance Cartridge With Lever Handle - AMS-TU075507

Pressure balancing, yes. The cartridge behind it is a double ceramic pressure balance unit: a ceramic disc mixing valve plus a ceramic balancing spool in one piece. The spool holds output temperature steady when hot or cold supply pressure shifts, which is what keeps the shower from spiking when a toilet flushes elsewhere on the line. Ceramic doesn't care about mineral deposits or hard water, so it holds up in buildings with rough water.

Yes, that's the pairing. The Colony PRO TU075507 trim is specified for use with Flash shower rough-in valves, so if the Flash valve body is already roughed in, this trim mounts to it. It does not fit other rough-in platforms.

1.75 gpm (6.6 L/min) maximum on the 3-3/4 inch showerhead. That's below the 2.5 gpm federal maximum and it meets the 1.8 gpm ceiling that California, Colorado and several other jurisdictions apply to showerheads, so it clears low-flow specs where the code is written to 1.8. American Standard puts the savings at 30 percent versus standard usage.

There's an adjustable hot limit safety stop, which caps how much hot water can mix with the cold. You set it at install and it stays put, which is how you keep scald risk down in apartments, dorms, hotels, or anywhere you can't control who turns the handle. The trim also has a comfort zone feature that widens the usable range of handle travel, so tenants can still fine tune temperature inside the limit you set.

It can. The Colony PRO TU075507 has back-to-back capability, meaning hot and cold can be reversed quickly without repiping. That covers the classic back-to-back bathroom layout where one valve ends up mirrored, and it saves you opening the wall when supplies land on the wrong sides.

No, check valves are integrated. The trim's cartridge assembly includes them specifically to eliminate cross flow between hot and cold, so you're not adding inline checks to satisfy that. Worth knowing on a remodel where an older valve needed them added.

It's a one-piece cartridge, which is the point of the design: mixing valve and balancing spool come out together as a single unit, so a service call is one part and one pull rather than staging components. The ceramic disc mixing element is what carries the drip-free service life and the smooth handle feel. For a property manager running a lot of identical units, standardizing on one cartridge across the building is the real win.

Metal lever handle. A lever is operable with a closed fist or a forearm, which is the handle style specified for accessible showers, unlike a round knob that needs a grip and a twist. The escutcheon carries red and blue indicators so the hot and cold sides read at a glance.

The kit ships with a 3-3/4 inch water-saving head at 1.75 gpm plus the shower arm and flange. Nothing stops you swapping the head, since it threads onto a standard 1/2 inch NPT shower arm, but two things follow: you lose the 1.75 gpm rating that gets this assembly through a low-flow spec, and you're paying for a head you won't install. If the job calls for a different head, buy the trim for the handle and escutcheon and treat the included head as a spare.