Description
Connect your countertop RO system to virtually any water source — kitchen faucets, bathroom faucets, garden hose outlets, shower connections, and more.
Covers
Kitchen · Bath · Utility
What it is
Not every faucet has the same thread. These connection adapters bridge the gap between your faucet’s aerator thread (or water outlet) and the diverter valve that feeds your countertop RO system. Pick the one that matches your faucet, screw it on by hand, and you’re connected.
Nine options cover the most common kitchen and bathroom faucets, plus garden hose outlets, handheld shower connections, and pull-down/sprayer faucets. Not sure which one you need? Use the table below.
Which adapter do I need?
Check your faucet type, then pick the matching adapter from the dropdown above.
| Your faucet |
Choose this adapter |
SKU |
Price |
| Kitchen |
| Standard kitchen faucet (female aerator) |
Standard 15/16″ adapter |
FT-M1516-M5564 |
$3.49 |
| Kitchen faucet with 3/4″ female thread |
Female 3/4″ adapter |
FT-F34-M5564 |
$3.99 |
| Pull-down or sprayer faucet |
Pulldown adapter (3-piece set) |
FT-SPR-AD |
$8.99 |
| Bathroom |
| Standard bathroom faucet (female aerator, male thread) |
Male 13/16″ adapter |
FT-M1316-M5564 |
$1.99 |
| Bathroom faucet with female 13/16″ thread |
Female 13/16″ adapter |
FT-F1316-M5564 |
$3.99 |
| Old or smooth-tip faucet (no threads) |
No-thread adapter (friction fit) |
FT-NT-M5564 |
$4.99 |
| Utility / Travel |
| Garden hose bib or utility sink (3/4″ hose thread) |
Garden adapter (3/4″ GHT × 1/4″ QC) |
FT-GARDEN-QC14 |
$6.00 |
| Handheld shower hose |
Shower hose adapter |
FT-SHOWER-A |
$6.00 |
| Not sure / need multiple / traveling |
Travel pack (includes 15/16″ + 13/16″ male & female) |
FT-TRAVEL-PACK |
— |
Not sure which thread your faucet has? Unscrew your aerator and compare the thread size, or send us a photo and we’ll help you match it.
Kitchen adapters
Standard Kitchen — 15/16″
The most common kitchen faucet adapter. Fits standard female aerator threads (15/16″-27). Metal construction. Screws onto the faucet tip where the aerator was.
FT-M1516-M5564
$3.49
Kitchen — Female 3/4″
For kitchen faucets with a larger 3/4″ female thread. Metal construction with rubber gasket seal. Less common than 15/16″ but found on some older and commercial-style faucets.
FT-F34-M5564
$3.99
Pulldown / Sprayer Faucet — 3-Piece Set
For pull-down and sprayer-style kitchen faucets. Includes 3 adapters (3/8″ compression, 1/2″ MPT, 3/8″ MPT) to cover most brands. Connects to the hose under the spray head — unscrew the faucet head to install. Fits approximately 60–75% of pulldown/sprayer designs.
FT-SPR-AD
$8.99
Bathroom adapters
Male 13/16″ — Standard Bathroom
For the most common bathroom faucets with a female aerator (male adapter threads in). Lightweight plastic. The most affordable adapter in the lineup.
FT-M1316-M5564
$1.99
Female 13/16″ — Bathroom
For bathroom faucets with a male aerator thread (female adapter screws over it). Plastic construction. Check whether your faucet tip has external or internal threads to choose between this and the male version.
FT-F1316-M5564
$3.99
No-Thread — Friction Fit
For very old or smooth-tip faucets with no aerator threads at all. Uses a rubber cone and hose clamp to create a friction-fit seal around the spout. A last-resort option when no threaded adapter fits.
FT-NT-M5564
$4.99
Utility & travel
Garden / Utility Outlet
Connects your RO system to a 3/4″ garden hose bib or utility sink outlet. Output is 1/4″ OD quick-connect — tubing pushes straight in. Great for garages, laundry rooms, and outdoor setups.
FT-GARDEN-QC14
$6.00
Handheld Shower Hose
Connects to a handheld shower hose fitting. Useful in bathrooms or utility areas where the shower hose is the most accessible water source. Unscrew the shower head and thread this adapter on.
FT-SHOWER-A
$6.00
★ Travel Pack
Includes the most commonly needed adapters in one set: 15/16″ male, 13/16″ female, and 13/16″ male. Ideal for travel, rentals, Airbnbs, and RV use where you don’t know the faucet type in advance.
FT-TRAVEL-PACK
See price above
How to identify your faucet thread
- Unscrew the aerator from your faucet tip (turn counterclockwise). If it won’t unscrew, you may have a built-in or recessed aerator — try the no-thread adapter or contact us.
- Look at the exposed threads. Are they on the outside of the spout (male thread) or inside (female thread)?
- Measure the diameter. Kitchen faucets are usually 15/16″ (most common) or 3/4″. Bathroom faucets are usually 13/16″.
- Still not sure? Take a photo of your faucet tip (with the aerator removed) and send it to us — we’ll tell you which adapter you need.
Good to know before you buy
- Adapters connect to the diverter valve that comes with your countertop RO system. The adapter screws onto your faucet; the diverter connects the adapter to the RO system’s tubing.
- Pulldown/sprayer faucets: the 3-piece set fits approximately 60–75% of pull-down and sprayer designs. Compatibility depends on faucet brand and internal hose design — not all pulldowns are compatible.
- No-thread adapter: this is a friction-fit solution for faucets without any threads. It works but is less secure than a threaded connection — use it as a last resort.
- Always verify your faucet thread type and size before ordering. Male vs. female and 13/16″ vs. 15/16″ are the two most common mix-ups.
- Garden adapter (FT-GARDEN-QC14) connects directly to 1/4″ OD tubing via quick-connect — it bypasses the standard diverter valve.
Related
Countertop RO Systems
Systems these adapters connect to
View systems →
Kitchen Faucet Diverter
Brass diverter valve (sold separately)
View diverter →
All RO Parts & Accessories
Tubing, fittings, and replacement parts
Browse parts →
Please note: Adapter compatibility depends on your faucet’s thread type, size, and design. Not all faucet styles are compatible — pull-down and sprayer faucets in particular vary by brand and internal design. Always verify your faucet type and thread size before ordering. When in doubt, send us a photo and we’ll help you find the right one.
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