A slow-filling toilet or a shower that shifts temperature unexpectedly calls for different parts, yet both often get filed under the same general repair category. The six options below cover three shower pressure-balancing valves and trim, plus three Fluidmaster toilet tank repair kits. That mix makes the plumbing fit more important than the label, especially for DIYers replacing a component inside an existing bathroom system.
The Leading Options At A Glance
KOHLER 11748-KS-NA Rite-Temp 1/2″ Pressure-Balancing Valve
Kohler TS35320-4-CP Elate Valve Trim
KOHLER 11748-K-NA Rite-Temp 1/2″ Valve
Fluidmaster 400H Universal Toilet Fill Valve
Fluidmaster K-400H-039 2-Inch Repair Kit
Fluidmaster PerforMAX 3-Inch Repair Kit
Meet The Standout Selections
The 11748-KS-NA brings together three useful shower components in one brass valve body: a pressure-balancing cartridge, an integrated push-button diverter, and screwdriver stops. A diverter redirects water between outlets, so this configuration suits a showerhead and handshower sharing one control.
Unlike the 11748-K-NA covered later, this model includes the stops used to adjust flow at the wall. That makes it a more complete replacement for a compatible shower valve, though surrounding trim and plumbing connections still need to match.
Bright Spots
- The one-piece diaphragm cartridge is designed for easier cartridge access and maintenance.
- Pressure balancing moderates sudden temperature changes as household water use changes.
- The integral push button lets one valve serve a showerhead and handshower.
- A high-temperature limit setting adds another layer of control.
Practical Considerations
- Confirm the existing valve dimensions, connections, and trim before ordering this model.
- This is a shower valve, not a component for repairing a toilet tank.
Feature Snapshot
Who It Suits Best
This model suits a homeowner replacing a compatible 1/2-inch shower valve that controls both a showerhead and a handshower.
Where Another Pick Suits Better
Choose the Kohler TS35320-4-CP Elate Valve Trim instead when your project calls for a new visible handle and faceplate rather than the internal mixing valve.
Polished chrome and clean geometry make the Elate trim the visual focus of this roundup, but the functional details matter just as much. A single metal lever handles both water activation and temperature adjustment, reducing the number of separate controls at the wall.
Trim is the visible handle, faceplate, and escutcheon assembly rather than the valve body buried in the wall. That distinction is crucial for remodelers: the TS35320-4-CP pairs with a compatible Rite-Temp valve and a separately purchased showerhead.
Noteworthy Benefits
- One lever controls both activation and temperature setting for straightforward daily use.
- The ADA-compliant metal handle offers a clear grip for users with limited hand mobility.
- Polished chrome coordinates with other fixtures in the Elate collection.
- Antiscald protection supports steadier shower temperature control.
Where It May Fall Short
- It cannot complete a shower installation without a separate valve and showerhead.
- The polished finish needs a bathroom style that can accommodate its bright, reflective surface.
At A Glance
Made For
This trim best fits a coordinated bathroom remodel that needs a polished chrome lever, faceplate, and accessible single-lever shower control.
Consider Something Else When
The KOHLER 11748-KS-NA Rite-Temp 1/2″ Pressure-Balancing Valve suits you better when replacing the internal shower valve itself.
The 11748-K-NA is the basic shower-valve option in this group, centered on a 1/2-inch pressure-balancing body with a push-button diverter. That diverter arrangement makes practical sense in a bathroom where one wall control feeds both a fixed showerhead and a handshower.
Compared with the KS version, this model is the cleaner choice when you already have serviceable stops and do not need to replace them. The honest catch is that visible trim is not part of the core replacement, so your existing faceplate, handle, and accessories may determine whether the installation looks finished.
Reasons It Performs
- Pressure balancing keeps shower flow and temperature behavior more consistent.
- The push-button diverter serves showerhead and handshower applications.
- The 1/2-inch size suits a standard category of shower plumbing connections.
Points To Note
- Check the existing trim and stops before planning the replacement.
- This is a shower component and has no role in a toilet tank repair.
Right Fit
This valve fits a straightforward shower replacement where the existing stops and visible trim remain in place.
Another Choice May Suit
The KOHLER 11748-KS-NA Rite-Temp 1/2″ Pressure-Balancing Valve fits you better when screwdriver stops should be included in the replacement.
The Fluidmaster 400H shifts the focus to the toilet tank, where a fill valve controls incoming water and adjusts the tank’s water level. Its universal fit targets most toilet models and brands, making it a practical first option for a common household replacement.
Separate tank and bowl adjustment dials give you more control over the final water level. For a toilet that fills slowly, runs noisily, or leaves the bowl level off, the relevant upgrade is restoring accurate water control rather than replacing the entire tank assembly.
Useful Touches
- Universal positioning makes it suitable for many common toilet tank layouts.
- Tank and bowl level dials support more precise water-level adjustment.
- Step-by-step instructions help DIYers follow the installation sequence.
- The focused repair can address slow or noisy tank filling.
Small Caveats
- Measure the tank layout and compare the connection points with the existing fill valve.
- This kit addresses the fill valve rather than the flapper or flush valve assembly.
Quick Facts
Who Should Grab It
The 400H suits a DIYer replacing the fill valve in a common toilet without changing the flapper or flush valve.
Where A Sibling Pick Shines
The Fluidmaster K-400H-039 2-Inch Repair Kit fits you better when your toilet uses a two-inch flush valve and both fill and flapper parts need attention.
This kit combines a PerforMAX fill valve with a two-inch flapper for toilets built around a two-inch flush-valve opening. That pairing matters because a flapper seals the flush valve after the tank empties, and its diameter must correspond to that opening for a proper seal.
It is a more complete repair option than the standalone 400H for a two-inch system. For a household facing both inconsistent tank filling and a worn flapper, handling both components together reduces the need to identify and source each worn part separately.
Where It Helps
- Combining the fill valve and flapper covers two essential tank functions.
- The kit is designed around a two-inch flush-valve opening.
- It suits toilets needing a broader tank refresh rather than one isolated part.
Possible Compromises
- The two-inch opening must match your toilet’s existing flush-valve size.
- It is more than you need when the fill valve performs correctly and only the flapper has worn.
Built With In Mind
This kit fits a DIYer servicing a compatible two-inch toilet where both the fill valve and flapper show signs of wear.
Reach For A Different Pick When
The Fluidmaster 400H Universal Toilet Fill Valve suits you better when only the tank-filling component needs replacement.
The three-inch designation refers to the toilet’s flush-valve opening, and that measurement determines which repair components can work in the tank. This Fluidmaster package gathers the compatible components into one kit, making it a sensible option for a broader service of a three-inch toilet.
Where the two-inch kit concentrates on a fill valve and flapper, this package is aimed at a larger flush-valve format. The trade-off is specificity: a broad repair bundle helps with the tank, but it remains the wrong choice for a toilet built around a different opening size.
Standout Benefits
- The package brings compatible repair components together in one kit.
- It is designed for toilets with a three-inch flush-valve opening.
- One package can support a more complete tank component refresh.
- The PerforMAX line provides a recognizable platform for compatible replacement parts.
Factors To Consider
- Confirm that the tank uses a three-inch flush-valve opening.
- Check the included components against the parts missing from your particular toilet.
Feature Overview
Whose Shelf It Belongs On
This kit belongs in the toolbox of a handy homeowner working on a toilet with a compatible three-inch flush-valve opening.
Swap It Out When
The Fluidmaster K-400H-039 2-Inch Repair Kit fits you better when your toilet has a two-inch flush valve rather than a three-inch opening.
Match the Repair to the Plumbing
Identify the valve’s actual job
A toilet fill valve brings water into the tank and controls its level, while a shower pressure-balancing valve mixes hot and cold water for a shower outlet. Start by identifying the fixture and the failed part, because the similar category labels can otherwise lead you toward incompatible hardware.
Measure the flush-valve opening
For toilet flappers and complete tank kits, measure the opening where the flush valve sits. A two-inch flapper belongs with a two-inch flush valve, and a three-inch repair kit is intended for the larger format.
Check connections and included pieces
Compare the existing valve’s connection size, mounting layout, and clearance inside the tank or wall. For a shower project, separate the internal valve from the visible trim, and note whether the replacement includes screwdriver stops.
Match the handle to the style
A trim-only purchase changes the shower’s appearance and controls without supplying the internal mixing valve. Choose polished chrome for a coordinated Elate bathroom or use another compatible trim that follows the existing fixture design.
Avoidable Mistakes Before You Order
Where Shoppers Go Wrong
Buying by brand alone can hide an incompatible connection or opening size. Measure the installed part, identify whether the flapper is included, and separate a complete valve from trim-only hardware before placing the order.
What Separates Premium From Basic
A higher-tier package may include more coordinated controls, adjustable components, or several service parts in one box. That added convenience is worthwhile for a remodel or multi-part repair, but a basic matching component can be more appropriate for one straightforward replacement.
Frequently Asked Questions
Are all six options toilet tank valves?
No. The first three are shower pressure-balancing valves or shower trim, while the last three are Fluidmaster toilet tank components.
How do I know which flapper size fits?
Measure the diameter of the toilet’s flush-valve opening before ordering. The Fluidmaster K-400H-039 2-Inch Repair Kit is intended for a two-inch opening.
Can I install a shower trim without a valve?
The Kohler TS35320-4-CP Elate Valve Trim is trim only, so it requires a compatible Rite-Temp valve and a separate showerhead for a complete installation.
What does a toilet fill valve do?
It controls incoming water and the tank’s fill level. The Fluidmaster 400H adds separate tank and bowl adjustment dials for fine-tuning the final water levels.
Should I replace the fill valve and flapper together?
That makes sense when both parts show wear in a compatible system. For an isolated fill-valve issue, the standalone Fluidmaster 400H is a more focused choice.
Final Verdict
Your toilet tank or shower wall dictates the correct match, not a general repair label. Match the connection size and flush-valve opening first, then decide whether you need a single functional part, a coordinated trim, or a combined repair kit. That simple check keeps the project focused and reduces the chance of ordering the wrong component.