American Standard Serin 1.75 gpm/6.6 L/min Tub and Shower Trim Kit With Water-Saving 3-Function Shower Head, Double Ceramic Pressure Balance Cartridge With Lever Handle - AMS-TU064507

Plan on it not fitting. The Serin TU064507 trim is specified for American Standard Flash shower rough-in valves, and the escutcheon, handle and one-piece cartridge are built around that body. On a remodel over another brand's valve, or an older American Standard valve, the valve body needs to be changed out to a Flash rough-in.

Maximum flow is 1.75 gpm (6.6 L/min), which American Standard rates as a 28 percent reduction in water use. That matters on projects where a low-flow showerhead is called for on the fixture schedule, and for multi-family or hospitality owners standardizing on reduced-flow heads across units.

Pressure balance. The Serin TU064507 uses a double ceramic pressure balance cartridge that combines a ceramic disc mixing valve with a ceramic balancing spool in one piece. The spool holds output temperature steady when hot or cold supply pressure changes, such as a toilet flushing on the same line. It is not a thermostatic mixing valve, which controls to a set temperature rather than reacting to pressure shifts.

Yes. The Serin trim has back-to-back capability, so hot and cold can be reversed quickly without repiping. That is the fix when a back-to-back bath rough-in put the supplies on the wrong sides.

It includes an adjustable hot limit safety stop that caps how much hot water can mix with cold, cutting the risk of accidental scalding. Property managers and institutional maintenance staff can set that limit at commissioning, which is useful in senior housing, dorms and healthcare settings.

Chrome, ordered as American Standard part number TU064507.002. Chrome is the only finish this Serin trim kit is built in.

The head is a 4-3/4 inch (120 mm) face with three spray functions, so a user can switch spray patterns at the head while still staying inside the 1.75 gpm limit. It ships with the matching shower arm and flange, so the shower side is complete apart from the valve body.

No separate checks are needed. Integrated check valves are built in to eliminate cross flow between the hot and cold supplies, which is what keeps a tub spout or a neighboring fixture from feeding backwards through the valve.

The mixing and balancing elements are combined in a single one-piece cartridge, so a service call is one cartridge swap rather than rebuilding separate parts. The sealing surfaces are ceramic, which is unaffected by mineral deposits and hard water. Trim is metal, including the wall escutcheon and the lever handle.

It is a single metal lever handle, operable with one hand and without tight grasping, which is what accessibility-minded specifiers usually look for over a cross or knob handle. The handle also runs through a Comfort Zone range that widens the usable band for fine-tuning temperature.