That question reaches deeper into a combo specification than the two visible outlets do. It changes diverter logic, outlet behavior, sample approval, and sometimes the document package.
Two combos can photograph almost the same. Each can show one fixed head, one hand shower, one hose, and one holder.
One may allow either outlet separately plus a shared mode. Another may allow only one outlet at a time.
For an OEM shower head with handheld combo, I start at the wall and work outward. Water comes first. The parts that hold and position the set come after it.
Our shower set range includes exposed and concealed configurations, but the photograph alone does not define the operating path.
Start at the Wall Outlet
A retrofit inherits a wall outlet that is already in place.
Existing wall outlet
↓
shower arm / shower column
↓
diverter
↙ ↘
fixed head hose
↓
holder / slide bar
↓
hand shower
The existing outlet fixes part of the geometry before anyone chooses a finish.
It influences arm projection, selector height, and where the hose begins to hang. If an arm-mounted diverter sits high, the control sits high with it.
That can still be a correct installation. It can also be an awkward control point for the person using the shower.
A concealed shower gives the project more freedom earlier, because valve and control positions are decided before the wall is closed. Our guide on what actually ships in a shower trim kit covers the rough-in and trim side.
For a retrofit, the first useful drawing is the water path from the existing outlet to both shower outlets.
The Word “3-Way” Settles Less Than It Looks
A diverter can have one inlet and two outlets while still offering three operating results.
| Selector result | Fixed head | Hand shower |
|---|---|---|
| Position A | On | Off |
| Position B | Off | On |
| Position C | On | On |
The outlet count stays at two. The number of selector positions can still be three.
That is why 2-way, 3-way, 2-function, and 3-function should not be accepted as complete RFQ language by themselves.
Inside our shower-set work, we confirm functions with the buyer. Depending on the design, the selector may have two, three, or four positions.
Our regular dual-outlet configuration runs the fixed head or the hand shower separately. Shared operation is confirmed as a separate function before quotation.
What needs to be confirmed before pricing
| Specification line | What it means |
|---|---|
| Inlet / outlet count | Physical water connections on the diverter body |
| Selector positions | Number of available selector stops |
| Operating functions | Which outlet or outlet combination runs at each stop |
| Shared mode | Whether both outlets can run together |
| Diverter body | Zinc on our standard shower sets unless another material is specified |
| Certification file | Standard, model scope, and edition shown on the document |
A product photo cannot answer the last two lines.
Every assembled shower body goes through functional testing. For the diverter, our process runs 48 hours with repeated switching between outlets while leakage is checked.
This factory test confirms function and sealing under our test conditions. It does not replace a product-standard test method or the buyer’s certification file.
Where “Both at Once” Stops Being Only a Product Feature
The U.S. federal product standard and an adopted plumbing-code requirement are separate questions.
Federal law sets a maximum water-use limit for a showerhead. The statutory definition also includes a hand-held showerhead.
Project rules can add another layer. Some model-code and green-building provisions address multiple outlets that can operate at the same time.
That makes shared mode more than a comfort feature.
If a combined-flow rule applies, a late shared-mode request can reopen an approved flow configuration.
shared mode requested
↓
target rule checked
↓
outlet flow configuration reviewed
↓
sample performance reviewed again
↓
specification file updated if needed
If the required flow configuration changes the approved spray feel, restrictor selection or sample approval may need revision.
When a combined-flow limit applies, locking the diverter function before sample approval carries lower rework risk. Adding shared mode later can reopen the sample.
We manufacture the faucet and shower body. We confirm function and leakage on the assembled set.
I cannot tell from the factory which code edition a local authority is enforcing for a specific project. The importer, project team, certification body, or local authority has to settle that part.
Before sampling, buyers can send the target function, market, and document scope through our contact page.
Do Not Borrow a Leakage Number From the Wrong Diverter Category
A diverter test needs the correct product category before it needs a number.
EPA WaterSense material for bath-and-shower diverters cites 0.1 gpm before life-cycle testing and 0.2 gpm afterward. The same material references a 15,000-cycle life check.
Those public values are useful anchors for that diverter category.
I would not copy them onto every head/hand-shower selector without checking the applicable listing and test scope first.
Our 48-hour switching test answers a different factory question.
We repeatedly move the selector between outlets and watch the assembled body for leakage and function loss. We do not present that check as certification testing.
The current ASME A112.18.1/CSA B125.1 edition is 2024.
For purchasing, the document request should include both the standard and its edition. Acceptance of an earlier edition depends on the certification transition and target project.
Hand-held showers also sit inside backflow-protection requirements in model plumbing codes. That belongs in the certification and installation review, not in the product photo.
Leakage after installation is a different diagnostic problem. Our shower diverter repair guide covers that side.
Now Stop Following the Water and Follow the Positioning Hardware
Up to this point, the article has followed the water path.
The next problems are mechanical.
The shower arm, holder, slide bar, and hose decide where the outlets sit and how the hand shower returns to its resting position.
The Shower Arm Problem Is Usually Geometry Before Strength
The shower arm carries water, but it also fixes projection and angle.
On our shower-set configurations, the arm is usually stainless steel. Fixed, adjustable, and swivel versions are available.
A larger rain head does not automatically change the arm material or structure on our sets.
When an installed arm appears loose or starts to drop, we first check installation and tightening. A poor connection can create a positioning problem even when the arm itself is suitable.
For an OEM sample, the useful questions come before “is it heavy duty?”
- Where should the fixed head sit relative to the wall?
- Does the arm need to be fixed, adjustable, or swivel?
- Where does the diverter attach?
- Does the chosen angle leave clearance for the hose?
- Which joint does the installer tighten and align?
Arm material and arm geometry are separate specification lines.
The factory can supply a strong arm that is still wrong for the intended head position. That is a geometry error, not a material failure.
The Holder Decides Where the Hand Shower Lives
Take the hand shower out of the user’s hand and put it back.
Where it lands depends on the holder.
Our sets can use a fixed wall holder, an arm-mounted holder, or a slide bar. Angle-adjustable holders are available.
There is no single default slide-bar height across our shower models. The position follows the selected set design.
ABS is our standard holder material. Stainless steel is available when the buyer requests it.
| Holder type | What it changes |
|---|---|
| Fixed wall holder | One fixed resting position |
| Arm-mounted holder | Parks the hand shower near the arm area |
| Slide bar | Allows resting height adjustment |
| Angle-adjustable holder | Changes the hand-shower resting angle |
Holder material and holder geometry should not be collapsed into one quality judgment.
Changing ABS to stainless steel does not define the angle range. Choosing a slide bar does not define the hose length.
A damaged holder is easy to replace. A wrongly positioned holder can repeat the same reach problem across every unit in the shipment.
That is why holder position should be confirmed during sample review.
Hose Length Is Its Own Line
Our default hand-shower hose is about 1 m.
Longer options such as 1.5 m, 1.75 m, and 2 m are available. Hose materials can include EPDM or PEX.
Raising the holder does not automatically create a longer-hose configuration in our order system.
Switching the holder from ABS to stainless steel does not change it either.
Confirm separately: holder location holder angle hose length hose material hand-shower connection
A rendering can make any hose look neatly proportioned. The PO still needs the actual length.
“Both” Is a Function Request, Not a Flow Promise
A diverter can be designed to open both outlets together.
That statement only describes function.
It does not promise how much water each outlet will deliver at a specific installation.
Field performance also depends on supply pressure, valve capacity, outlet restriction, hose configuration, and the selected shower outlets.
Our factory test confirms switching and leakage on the assembled set. We do not use that test to promise the final flow split at a site we have not tested.
For a buyer, the clean specification separates two questions:
| Question | What should be confirmed |
|---|---|
| Can both outlets open together? | Diverter function |
| How will the installed outlets perform together? | Target flow requirement and project conditions |
Shared mode can be correct while field performance still changes with the installation.
Canton Fair, October 2025: The Main Parts Passed Before the Set Was Frozen
At the October 2025 Canton Fair, a buyer confirmed our shower body, fixed head, and hand shower.
The buyer took the samples back for testing and was satisfied with those main components.
The set was still unfinished.
The diverter and holder requirements were different from the accessories paired with our display set.
We manufacture the faucet and shower body. Some accessories are sourced to the confirmed shower-set specification.
So the next work was accessory matching rather than redesigning the approved main body.
main body confirmed
↓
fixed head + hand shower confirmed
↓
diverter requirement reopened
↓
holder requirement reopened
↓
accessories sourced to buyer requirement
↓
complete set frozen
This is the part a rendering hides.
A buyer can approve the visible main components and still have an unfinished SKU.
Write the Combo as a Configuration Path
A shower-combo specification reads more clearly as a path than as a nickname.
Wall outlet → stainless adjustable arm → 1-inlet / 2-outlet diverter → 3 selector positions → shared mode required → fixed shower head → adjustable wall holder → 1.0 m EPDM hose → hand shower → certification file: standard + edition confirmed
Now change the diverter to two positions.
Change the holder to a slide bar. Change the hose to 1.5 m PEX.
The product photo may barely change. The order sheet does.
The path above is a configuration example, not a default HWFaucet SKU.
If standard still stands in for diverter function, arm type, holder position, or hose length, the set is not fully specified.
FAQ
Can a shower head with handheld combo run at the same time?
Yes, if the confirmed diverter configuration includes shared operation. That function should be written into the RFQ instead of inferred from “3-way.” If the target project also applies a combined-flow rule, check that requirement separately.
Do I need a 2-way or 3-way diverter for a shower head and handheld?
Do not choose by the number alone. Confirm inlet count, outlet count, selector positions, and operating functions. A two-outlet diverter can still provide three selector results.
Does a shower arm diverter reduce water pressure?
The diverter adds another flow path. Field performance also depends on supply pressure, valve capacity, outlet restrictions, hose configuration, and the selected outlets. Our factory test confirms switching and leakage; it does not predict the final flow split at the installation site.
Is a slide bar required for a hand shower?
No. A fixed wall holder or arm-mounted holder can also be used. The choice changes the resting position and adjustment range.
Does changing the hand-shower holder require a longer hose?
No. Holder position and hose length are separate order lines.
Sources
- U.S. Department of Energy — Showerheads
Referenced for the federal showerhead standard framework and current DOE regulatory status. - U.S. Department of Energy — Best Management Practice #7: Faucets and Showerheads
Referenced for the federal 2.5 gpm showerhead limit and the separate WaterSense 2.0 gpm efficiency level. - International Code Council — 2024 International Plumbing Code, Chapter 4
Referenced for hand-held shower conformity and backflow-protection requirements in the model code. - International Code Council — Multi-Showerhead Water Efficiency
Referenced as a public mechanism anchor for federal showerhead limits, WaterSense, and multiple-outlet treatment in model and green codes. - ASME — ASME A112.18.1/CSA B125.1, Plumbing Supply Fittings, 2024 Edition
Referenced for the current standard edition and scope covering bath and shower supply fittings, showerheads, and hand-held showers. - U.S. EPA WaterSense — Bath and Shower Diverters
Referenced for the 0.1 gpm pre-life-cycle and 0.2 gpm post-life-cycle leakage values for the applicable bath-and-shower diverter category. - U.S. EPA WaterSense — Bath and Shower Diverter Notice of Intent
Referenced for the 15,000-cycle life-cycle test and the pre/post-life-cycle leakage thresholds cited from ASME/CSA. - CSA Group — Plumbing Products No. 312
Referenced for the mechanism of certification-edition transitions and effective dates. - HWFaucet internal production and order notes. Referenced for diverter function naming, selector positions by model, shared-operation confirmation, standard zinc diverter bodies, 48-hour switching and leakage testing, stainless shower arms, holder options and materials, hose length/material options, factory testing boundaries, and the October 2025 Canton Fair accessory-matching project.
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