Brass body, lead-free alloy, extended supply tube, deck plate options included. Configured specifically for under-counter filter system pairings, with the compliance documentation your import markets require and OEM capability from 200 pieces.
Product Configuration
The term "water filter faucet" covers a wide range of products in our catalog, and the distinctions matter when you're specifying for a particular installation type. An under sink water filter faucet — sometimes called an under counter water filter faucet — is configured specifically for systems where the filtration unit mounts beneath the countertop and the faucet is a dedicated dispensing point installed through a separate deck hole. That configuration creates a set of requirements that a generic filter faucet doesn't always meet.
Under-counter filter systems typically position the faucet 400–600mm away from the filter head, and the supply tube needs to reach that distance without a field splice. We ship this product with a 500mm braided stainless supply tube as standard, with 700mm available on request — long enough to reach the filter connection in most standard cabinet depths without the installer having to source an extension.
We added the 700mm option after a North American distributor told us their plumbers were splicing tubes on-site because the standard length came up short in deeper cabinet configurations. A splice in a drinking water line is a contamination risk and a warranty claim waiting to happen.
Under-sink filter faucets are often installed in countertops that weren't originally drilled for a second faucet — granite, quartz, or solid surface countertops where the installer needs to work with the existing hole pattern. We offer this product with a single-hole deck mount and with an escutcheon plate that covers a 1-3/8" to 1-3/4" hole range, giving the installer flexibility without requiring a custom countertop modification.
The escutcheon plate is included in the standard package — it's not an add-on that your customers have to source separately.
Under-counter installations typically place the faucet at the back of the sink deck, which means the spout needs enough reach and height to clear the sink rim and deliver water to the center of the basin. Our standard under sink faucet spout reaches 120mm with a 180mm height — proportioned for a secondary faucet position rather than a primary kitchen faucet position.
If your buyers are installing into commercial or oversized sink configurations, we can adjust the spout geometry on OEM orders.
Product Data
Specifications shown are industry-standard values for this product type. Actual specifications may vary by configuration. Contact us for detailed product data sheets and custom specification options.
| Parameter | Specification |
|---|---|
| Body material | C36000-equivalent free-machining brass |
| Lead content | ≤0.25% by weight (NSF/ANSI 61 Section 9 compliant) |
| Valve type | Ceramic disc cartridge |
| Cartridge endurance | 500,000 open/close cycles (tested per production batch) |
| Spout reach | Typical 120mm (custom reach available on OEM orders) |
| Spout height | Typical 180mm |
| Deck hole size | 1-3/8" (35mm) standard; escutcheon plate covers 1-3/8" to 1-3/4" |
| Supply tube | 500mm braided stainless (standard); 700mm available on request |
| Supply tube connection | 1/4" push-fit (standard); 3/8" push-fit available |
| Operating pressure | 0.05–0.8 MPa |
| Flow rate | 1.5–2.0 L/min at 0.3 MPa (typical) |
| Finishes available | Chrome, brushed nickel, matte black, PVD gold, oil-rubbed bronze |
| Salt spray rating | 24h minimum (chrome, brushed nickel); 48h extended test on new finish batches |
| Certifications | cUPC, CE, WaterMark, SGS; NSF/ANSI 61 material documentation available |
500K
Cartridge cycles
≤0.25%
Lead content
1.5–2.0
L/min flow rate
0.8 MPa
Max pressure
Surface Finishes
All finishes are applied over the same brass body. Buyers can specify finish per SKU on OEM orders, or mix finishes across a single purchase order to match different kitchen programs.
High-reflectivity electroplated chrome. 24h salt spray tested. Most popular finish for residential programs.
Satin-textured nickel. Hides water spots and fingerprints. Pairs well with stainless appliance suites.
Flat black powder-coat style finish. Strong demand in contemporary and industrial kitchen designs.
Physical vapor deposition gold. More durable than traditional gold plating. 48h extended salt spray tested.
Dark bronze with hand-rubbed highlights. Suits traditional and farmhouse kitchen programs.
OEM Finish Matching
If your product line uses a proprietary finish code or requires matching an existing faucet family, send us a sample or finish spec and we'll evaluate feasibility. Custom finishes are available on orders meeting minimum quantity thresholds.
For Buyers & Importers
Most buyers sourcing under sink filter faucets have the same set of questions. Here's how we handle the ones that come up most often.
Standard catalog configurations are available at lower MOQs suitable for importers and distributors building initial inventory. Custom configurations — including non-standard finishes, modified spout geometry, or private-label packaging — require higher MOQs. Contact us with your target volume and we'll confirm feasibility.
We support full private-label programs: custom box printing, branded instruction sheets, and logo engraving or laser marking on the faucet body. Artwork files should be provided in vector format. Lead time for first private-label run includes a sample approval stage.
cUPC, CE, WaterMark, and SGS test reports are available on request. NSF/ANSI 61 material composition documentation is available for buyers whose end markets require it. If your target market requires a certification not listed, contact us — we can advise on feasibility and timeline.
Standard configurations ship from our Kaiping facility. Production lead time varies by order size and current capacity. We ship FOB Guangzhou or CIF to major ports. Contact us for a current lead time estimate and freight quote for your destination.
Common OEM modifications include spout reach and height adjustments, alternative supply tube lengths, non-standard inlet thread sizes, and handle style changes. Tooling costs and MOQ requirements depend on the scope of modification. We recommend starting with a technical brief so we can assess what's achievable within your budget.
Submit an RFQ
Tell us your target finish, quantity, supply tube spec, and any custom requirements. The more detail you provide, the faster we can respond with accurate pricing.
Receive Quotation & Samples
We'll send a formal quotation and, if needed, arrange pre-production samples for your review and approval before production begins.
Production & QC
Each production batch undergoes in-line and final QC including pressure testing, finish inspection, and cartridge cycle verification. Third-party inspection can be arranged on request.
Shipment & Documentation
We prepare full export documentation including packing lists, commercial invoices, and test reports. Certificates of origin and other compliance documents are available on request.
Common Questions
Questions we hear most often from buyers and importers sourcing under sink water filter faucets.
The standard 1/4" push-fit inlet is compatible with the majority of under-counter filter systems on the market, including most single-stage, multi-stage, and inline carbon block systems. If your system uses 3/8" tubing, we offer a 3/8" push-fit variant. For systems with non-standard connections, contact us to discuss adapter options.
This faucet can be used with RO systems, but buyers sourcing specifically for RO applications should consider our dedicated RO faucet, which is optimized for the lower output pressure typical of RO systems. The under sink filter faucet is better suited to gravity-fed or pump-assisted filter systems operating in the standard pressure range.
Yes. The standard supply tube is 500mm. A 700mm tube is available on request and is suitable for installations where the filter head is mounted further from the faucet position. Custom lengths are available on OEM orders with sufficient volume.
The faucet body requires a 1-3/8" (35mm) deck hole. The included escutcheon plate covers holes up to 1-3/4", which accommodates most pre-drilled sink configurations. If your buyers are working with non-standard hole sizes, contact us to discuss escutcheon options.
Current certifications include cUPC, CE, WaterMark, and SGS. NSF/ANSI 61 material composition documentation is available for buyers whose markets require it. If your target market requires a specific certification not listed, contact us and we can advise on feasibility and timeline for obtaining it.
Yes. Pre-production samples are available for evaluation. Sample lead time and cost depend on configuration. For standard catalog configurations, samples are typically available faster than for custom OEM configurations. Contact us with your requirements and we'll confirm sample availability and timeline.
Yes. We support full private-label programs including custom packaging, branded instruction sheets, and logo marking on the faucet body. Minimum quantities apply for private-label configurations. Provide your artwork in vector format and we'll confirm feasibility during the quotation stage.
The brass body uses C36000-equivalent free-machining brass with lead content ≤0.25% by weight, compliant with NSF/ANSI 61 Section 9 requirements. Material composition documentation is available on request for buyers whose markets require formal lead-free compliance documentation.
Submit an RFQ with your target finish, quantity, and any custom requirements. We'll respond with pricing, lead time, and sample availability.
Under sink water filter faucets carry a compliance burden that standard kitchen faucets don't, because the water passing through them is consumed directly. Your downstream customers — whether they're homeowners, commercial kitchen operators, or building managers — will ask about lead content. Your compliance team will ask about certifications. Getting ahead of both questions is how you avoid problems at the listing stage and at the port.
Our under sink water filter faucet bodies are cast from C36000-equivalent free-machining brass, held to ≤0.25% lead by weight. That figure sits below the NSF/ANSI 61 Section 9 threshold for drinking water contact surfaces.
We test every incoming brass batch with XRF analysis before it enters production — not on a sampling basis, but every batch. The internal waterway surfaces are machined to a smooth finish and passivated after machining.
Casting porosity in the internal waterway is a secondary lead leaching pathway that material specification alone doesn't close. The machining and passivation step addresses it directly — a process detail that separates a compliant material spec from a compliant finished product.
North America
Covers North American plumbing code compliance for this product.
European Market
Covers European market requirements.
Australia & New Zealand
Covers Australia and New Zealand market requirements.
For buyers who need NSF/ANSI 61 material documentation — required by law in California, Vermont, Maryland, and several other states, and increasingly a retailer listing requirement — we can provide XRF test reports and material certifications with each shipment.
If your buyers require a full NSF 61 product certification rather than material compliance documentation, we can discuss the certification extension process for specific SKUs.
Test reports, certificates of origin, and compliance paperwork are prepared in parallel with production so your customs broker and compliance team have what they need without chasing us after the container ships.
The category page covers our general manufacturing approach — brass gravity casting, CNC machining, multi-layer electroplating — so we won't repeat that here. What's specific to this product is where the failure modes concentrate and what we do about them.
Under-sink filter faucets sit in a moisture-rich environment. The area where the faucet body meets the deck plate is a condensation trap — water from the filter line drips, cleaning products pool, and the seal between the faucet base and the countertop surface takes constant abuse.
The failure mode: Factories that run a standard plating stack without a base sealant see finish delamination at the base within 12–18 months, which generates cosmetic warranty claims.
Our fix: We apply a sealant bead at the base-to-deck interface during final assembly. It adds 30 seconds per unit, but it eliminates the most common cosmetic return in this product type.
Under-counter filter systems typically operate at lower inlet pressure than standard tap water — some carbon block systems run at 30–50 PSI feed pressure. Ceramic disc cartridges calibrated for standard tap pressure can develop a slow drip at these lower pressures because the disc seating force is designed for higher inlet pressure.
±0.003mm
Disc Flatness Tolerance
0.2 MPa
Batch Test Pressure
We spec the cartridges in this product with a lighter spring tension and a tighter disc flatness tolerance to maintain a positive seal across the full operating pressure range. We test every production batch at 0.2 MPa specifically to catch this failure mode before the product ships.
The push-fit connection between the supply tube and the filter head is the most common installation failure point in this product category.
Collet-style push-fit fitting with a stainless steel grab ring
EPDM O-ring seal for long-term chemical resistance
Grab ring bites into tube OD under pressure — seal improves under operating conditions rather than relying solely on initial insertion force
0.8 MPa
Test Pressure
60 sec
Hold Duration
Tested at the top of the operating pressure range as part of final outgoing inspection on every unit.
3
Failure Modes Addressed
Base seal, cartridge seating, supply tube connection — the three highest-frequency return drivers in this category
100%
Batch XRF Testing
Every incoming brass batch tested — not sampled — before entering production
100%
Final Outgoing Inspection
Supply tube connection tested at 0.8 MPa for 60 seconds on every unit before shipment
Four distinct buyer types drive consistent reorder volume on this product. Each has a different order pattern, a different reason to buy, and a different set of requirements. Here's how each segment works in practice.
Primary Volume Channel
Companies that manufacture or assemble under-counter filtration systems — carbon block, multi-stage, or UV systems — need a matched faucet to complete the system package. The faucet is the most visible component of the system; it's what the end customer interacts with every day.
OEMs who source a generic faucet and pair it with a branded filter system create a visual mismatch that undermines the premium positioning of the system. We supply several under-sink filter OEMs on a private-label basis, typically in runs of 1,000–3,000 units per order, with matched finishes and handle styles that look like they were designed with the system rather than sourced separately.
Replacement Cycle Channel
Carrying replacement faucets for the installed base of under-counter filter systems. The replacement cycle in this segment is real and predictable: filter systems get replaced every 5–10 years, kitchens get renovated, and finish preferences change.
Distributors who stock under sink water filter faucets in three finishes — brushed nickel, chrome, and matte black — cover the majority of the installed base they're selling into. The reorder pattern is steady and low-drama: same SKUs, same documentation, same container specs on every order.
Catalog Extension
Adding a water filtration accessory to an existing faucet catalog. If you're already importing kitchen faucets, adding under counter water filter faucets is a natural extension — same supplier, same container, same compliance documentation.
The category has been growing in North America and Europe as under-sink filtration adoption increases, and the faucet is a necessary accessory purchase for every system installation. We've seen this category grow consistently for our existing kitchen faucet buyers who added it to their catalog — it's a low-risk SKU extension with a clear demand driver.
Contractor Supply Channel
Stocking for contractor and installer accounts. Plumbers and kitchen remodelers who install under-counter filter systems need a reliable source for the faucet component. Wholesalers who stock this product in multiple finishes capture the specification at the point of installation rather than losing it to a retail channel.
The typical order pattern from this segment is smaller and more frequent — 200–500 units per order — which fits our MOQ structure well.
Ready to discuss your volume requirements?
We work with OEMs, distributors, importers, and wholesalers. Tell us your segment and order pattern and we'll quote accordingly.
We run five finishes in-house on this product: chrome, brushed nickel, matte black, PVD gold, and oil-rubbed bronze. All five are available on the brass body. The finish choice affects both your retail price point and your return rate — worth thinking through before you build your SKU mix.
Volume Finishes
The volume finish in North America. Coordinates with stainless appliances, hides water spots and minor scratches better than chrome, and carries a mid-premium retail price.
Primary market: North America
Recommendation: First finish to stock for a North American starter SKU mix
Leads in Europe and Southeast Asia and is the most economical finish option. The caveat is plating quality: chrome filter faucets from suppliers who skip the nickel mid-coat in their plating stack fail early in kitchen environments.
Our chrome runs the full copper/nickel/chrome electroplating stack — the nickel mid-coat is what gives the finish its corrosion resistance — and passes 24-hour salt spray minimum, with most batches clearing 48 hours.
Primary markets: Europe, Southeast Asia
Salt spray: 24-hour minimum, most batches clear 48 hours
The fastest-growing finish across all our export markets for the past three years. Carries the highest retail price point of the three volume finishes and the strongest margin for distributors.
The trade-off is that it shows water spots more readily in hard water areas — worth noting in your product descriptions for markets with high water hardness.
Growth: Fastest-growing finish, all export markets, 3 consecutive years
Margin: Highest retail price of the three volume finishes
Premium Finishes — Margin Protection
Lower volume but carries the highest retail price points. Buyers who want PVD gold are not price-shopping, and the competition at this finish tier is thinner. These are the finishes that protect your margin in a competitive catalog.
Highest retail price tier · Thin competitive field
Lower volume but carries the highest retail price points alongside PVD gold. Buyers who want oil-rubbed bronze are not price-shopping, and the competition at this finish tier is thinner.
Highest retail price tier · Margin-protective SKU
For OEM orders, we can match the finish of the under sink faucet to other faucets in your product line. If you're supplying a kitchen faucet and a filter faucet as a coordinated set, we can run both on the same finish batch to ensure color consistency.
OEM & Private Label
Under-sink filter faucets are a category where OEM customization adds real commercial value — a faucet that matches the filter system brand and finish is a meaningfully better product than a generic accessory. The table below maps every customization dimension to its MOQ impact so you can scope your project before the first conversation.
| Customization Dimension | Options | MOQ Impact |
|---|---|---|
| Handle style | Lever, cross, knob, custom profile | Custom tooling: 200 pcs minimum |
| Spout profile | Standard, gooseneck, angled, custom reach | Custom tooling: 200 pcs minimum |
| Spout reach / height | Adjustable within 100–200mm reach, 150–250mm height | Standard tooling range, no MOQ impact |
| Deck plate | Single-hole, escutcheon plate, custom escutcheon shape | Standard options included; custom shape: 500 pcs minimum |
| Supply tube length | 500mm (standard), 700mm, custom length | No MOQ impact |
| Supply tube connection | 1/4" push-fit (standard), 3/8" push-fit, compression fitting | No MOQ impact |
| Finish | Chrome, brushed nickel, matte black, PVD gold, oil-rubbed bronze | 200 pcs per finish |
| Branding | Logo engraving on body, badge on handle, custom packaging | 200 pcs minimum |
Starting from our existing catalog body with modified handles, finishes, or branding, first samples typically turn around in 15–20 days. This is the fastest path to a branded product.
For projects requiring new tooling, the path from design brief to first sample runs 25–35 days. We maintain in-house tooling for brass casting dies — revisions don't go to an outside vendor and add weeks to the timeline.
How Most New Buyers Start
Most new buyers in this category start with a 200-unit trial order in one finish to test market response before scaling. We can ship samples in advance of the production order so you can validate the product with your own customers first.
Logistics & Landed Cost
Under sink water filter faucets pack efficiently — the compact form factor and relatively light weight (typical unit weight 400–600g including supply tube and hardware) mean the landed cost economics work well for importers.
Exact figure depends on carton configuration. We calculate the loading plan against your SKU mix and provide a packing list with CBM and gross weight per SKU before you confirm the order.
Including supply tube and hardware
400g
Minimum
600g
Maximum
We can configure packaging to meet FBA labeling and poly-bag requirements. Inner box dimensions are designed to fit standard shelf and bin configurations.
Your brand on the outer carton, no Wfaucet markings. Available on orders of 200 units or more.
Consolidating with other Wfaucet lines — kitchen faucets, bathroom faucets, or other filter faucet variants — in the same container? We coordinate the packing sequence to minimize void space and reduce per-unit freight cost.
12
Units per master carton
10–14K
Units per 40HQ container
200+
Units for blind drop-ship branding
Questions we hear from importers, distributors, and OEM buyers before placing their first order. Answered directly, without the runaround.
An under sink water filter faucet is configured specifically for under-counter installation: it includes a longer supply tube (500mm standard vs. 300mm on a countertop filter faucet), an escutcheon deck plate for flexible hole sizing, and a spout geometry proportioned for a secondary faucet position at the back of the sink deck.
A standard water filter faucet may work in an under-sink installation, but the supply tube is often too short and the deck plate may not cover the existing hole. The under-sink configuration eliminates the field modifications that generate installer complaints and warranty calls.
cUPC certification covers North American plumbing code compliance for most US states and Canadian provinces. For NSF/ANSI 61 Section 9 — the drinking water contact material standard required by law in California, Vermont, Maryland, and several other states — we can provide XRF test reports and material certifications demonstrating our ≤0.25% lead specification.
If your buyers or retail partners require a full NSF 61 product certification, we can discuss the certification extension process for specific SKUs. CE covers European requirements; WaterMark covers Australia and New Zealand.
200 pieces per SKU for standard catalog items. For OEM orders with custom tooling (new handle style, custom spout profile), the MOQ is also 200 pieces — low enough to test a new configuration in your market before committing to container quantities.
We recommend starting with a sample order of 2–5 units to validate the product with your own customers before placing a production order.
Standard Catalog
200 pcs
per SKU
OEM / Custom Tooling
200 pcs
per SKU
The standard 1/4" push-fit supply tube connection is compatible with the vast majority of under-sink filter systems on the market — it's the industry-standard connection for residential and light commercial under-counter filtration. The 3/8" push-fit option covers systems that use larger-diameter tubing.
For buyers pairing this faucet with a specific filter system brand, send us the system's connection spec and we'll confirm compatibility or recommend the appropriate fitting configuration.
Finish consistency is controlled at the plating bath chemistry level — we maintain bath composition logs for every production run and test adhesion and color on a sample basis before parts move to assembly. For reorders, we reference the original batch records to match the plating parameters.
For OEM buyers who need finish consistency across multiple SKUs (e.g., matching an under-sink faucet to a kitchen faucet in the same product line), we schedule the runs on the same plating batch where possible. We've had buyers send us their existing faucet for a color match before placing a new OEM order — that's a standard part of our sample process.
25–35 days for standard catalog items. 35–50 days for OEM orders with new tooling. We schedule production in 4-week windows and commit to the window at order confirmation — we don't push orders back to accommodate a larger buyer's rush.
If your timeline is tighter, contact us before placing the order and we'll tell you honestly whether we can accommodate it.
Standard Catalog
25–35 days
order confirmation to loading
OEM / New Tooling
35–50 days
order confirmation to loading
If the under sink configuration doesn't match your application, here's where to look.
Water Filter Faucet Line
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Water Filter Faucet Line
Two-port design, simpler installation, lower retail price point. The volume SKU for residential RO system OEMs.
Water Filter Faucet Line
304 stainless body for buyers targeting the premium or commercial segment; no plating, no finish degradation risk.
Water Filter Faucet Line
Bar-style spout profile, compatible with filtered water and carbonated beverage systems; opens the commercial foodservice channel.
Explore the complete range of water filter and RO drinking water faucets from Wfaucet.
View the full water filter faucet lineSend us your target volume, destination market, and finish preferences — we'll come back with a detailed quote and, if you're building a private-label system bundle, a recommendation on which configuration matches your filter system best.
A 2–5 unit sample order is the standard starting point. We can ship samples within 5–7 business days from our existing stock.
Phone
+86-0757-81228796Tell us your target volume, destination market, and finish preferences. For private-label system bundles, include your filter system model so we can match the right faucet configuration.
Target order volume and annual forecast
Destination market and compliance requirements (cUPC, NSF, etc.)
Finish preferences and any private-label or OEM requirements
Filter system model if bundling as a complete under-sink package
We respond to all RFQs within one business day. Sample orders ship within 5–7 business days from existing stock.
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