American Standard Studio S Valve Only Trim Kit With Double Ceramic Pressure Balance Cartridge With Lever Handle - AMS-TU105500

Trim only. The Studio S TU105500 is a valve-only trim kit: metal lever handle, brass wall escutcheon, and the double ceramic pressure balance cartridge. The in-wall valve body is not part of it, and it's built to go on American Standard Flash shower rough-in valves. If you're plumbing a new wall, order the Flash rough-in at the same time or the trim has nothing to mount to.

That's what the double ceramic cartridge is for. It pairs a ceramic disc mixing valve with a ceramic balancing spool, and the spool holds output temperature constant when relative hot and cold supply pressures change, which is exactly the toilet-flush or laundry-draw scenario in a multi-family building. Note it balances pressure, it does not hold a set temperature the way a thermostatic valve does, so the handle position still sets the temperature.

Yes, and this is the one that saves a wall demo. The Studio S trim has back-to-back capability, so hot and cold can be reversed quickly on the cartridge. That covers back-to-back bathrooms where one side gets mirrored piping and it covers a plain piping mistake behind a finished wall.

A valve-only trim controls one outlet and has no diverter, so it suits a stand-alone shower or a second valve dedicated to a hand shower. A tub and shower trim adds diverter control to send water between the spout and the head. Pick the valve-only TU105500 when the shower has a single outlet, and pick a tub/shower trim when one valve has to feed two.

There's an adjustable hot limit safety stop built into the cartridge. It caps how much hot water is allowed to mix with cold, which is the scald-risk control facilities managers set at handover in senior housing, hotels, and student housing. It's a field adjustment made at the cartridge, so you can set it per unit rather than ordering a different trim.

Four: polished chrome (TU105500.002), matte black (TU105500.243), brushed nickel (TU105500.295), and Brushed Cool Sunrise (TU105500.GN0). The suffix on the part number is the finish code, so if you're matching existing Studio S trim in a building, order by the full number rather than the finish name, and the same three-character code carries across other American Standard Studio S pieces.

Check valves are integrated into the cartridge, and they're there to eliminate cross flow between the hot and cold supplies. Nothing extra to buy on that count for the valve itself.

The mixing valve and balancing spool are combined into one cartridge, so a service call is a single-piece swap rather than rebuilding a stack of parts, and the ceramic material isn't affected by mineral deposits or hard water. For a property manager running a fleet of identical units, that's one spare part number on the shelf covering every shower.

Metal lever, and the wall escutcheon is brass. That matters for high-traffic openings like hotel and student housing baths where plastic handles crack at the set screw. The lever style also means it can be operated without gripping or twisting.