Industrial-Grade Sanitary Drain Engineering

Wholesale Bathroom Sink Strainer Stopper Supplier & Factory

Precision Engineering, Lead-Free Metallurgical Compliance, and Smart Dual-Base Global Manufacturing (China & Thailand)

Catalog Showcase · Series I

Precision Drain & Strainer Assemblies

Explore our heavy-duty commercial and residential sink strainers, engineered for North American and European plumbing codes.

China Brass Round Umbrella Drain JN-5012-L

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China No-Caulk Shower Drain JN-6301 Supplier

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Wholesale Flat Top Strainer JN-1017

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Heavy Duty Brass Sink Strainer with Tailpiece JN-1001-2-T

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Deep Cup Sink Strainer With Rolling Thread JN-1016-T

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Wholesale Compression Coupling JN-3004

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China 4-1/4" OD Snap-in Strainer Grid JN-6321

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Wholesale Flat Top Bar Sink Strainer JN-1202

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1998

Established Year

28,400 m²

Global Plant Footprint

100%

cUPC & AB1953 Certified

2 Bases

China & Thailand Dual Supply

Industry Whitepaper & Technical Depth

Comprehensive Guide to Commercial Bathroom Sink Strainers & Stopper Assemblies

In modern commercial construction, luxury hospitality, and high-density residential developments, the functional reliability of drainage components is often the determining factor between long-term operational efficiency and catastrophic water-damage liability. As a premier Wholesale Bathroom Sink Strainer Stopper Supplier & Factory, JANA Plumbing (operated under JANA PLUMBING CO., LTD. and Gateway Enterprise Corporation Thailand Co., Ltd.) combines nearly three decades of metallurgical expertise with smart manufacturing to supply high-precision sanitary solutions worldwide.

Bathroom sink strainers and stoppers serve a dual fluidic role: preventing organic debris and hair from entering wastewater infrastructure while providing absolute, bubble-tight sealing for basin water retention. Achieving long-term operational excellence requires an intricate balance of metallurgical purity, fluid-dynamic design, thread precision, and anti-corrosive electroplating.

Metallurgical Superiority

We utilize low-lead C37700 brass, dezincification-resistant (DZR) alloys, and food-grade AISI 304/316 stainless steel. Our formulations strictly adhere to California AB1953 and NSF/ANSI 372 lead-free mandates.

Fluid Dynamics & Flow Mechanics

Engineered with optimized anti-clogging internal geometries, reducing hydraulic turbulence and maximizing drain velocity beyond ASME A112.18.2 flow-rate benchmarks.

Advanced PVD & Plating

Multi-layer electroplating and Physical Vapor Deposition (PVD) finishes undergo strict ISO 9227 CASS salt-spray testing exceeding 96 hours to resist chemical degradation.

Technical Engineering Specs

Macro-Industry Solutions: Material Science & Hardware Architecture

Procurement teams and mechanical engineering specifiers must evaluate material characteristics carefully to prevent galvanic corrosion, thread binding, and elastomer degradation. Below is a technical breakdown of raw materials utilized in JANA Plumbing strainers and stoppers:

Material Variant	Mechanical Properties	Corrosion Resistance	Primary Application	Compliance Standard
Solid C37700 Forged Brass	Tensile Strength > 380 MPa, High Ductility	Excellent resistance to dezincification & scaling	Heavy-Duty Commercial & Hospitality Drains	cUPC, ASME A112.18.2, AB1953
AISI 304 Stainless Steel	High Impact Strength, Thermal Tolerance	Superior protection against acid/alkali cleaners	Residential Kitchen & Bathroom Basins	NSF/ANSI 61, CSA B125.2
DZR Brass (CW602N)	Specially Treated Zinc Phase Stabilization	Immune to soft, acidic water corrosion	Strict European & Australian Projects	EN 274, WRAS, WaterMark
Engineering Polymers (ABS/PP)	Lightweight, Impact Resistant, Thermal Stability	Chemical inertness against household bleaches	RV Plumbing, Modular Housing Systems	UPC Listed Component

Fluidic Mechanism Architecture: Pop-Up vs. Grid Strainers

JANA Plumbing manufactures various functional drain designs tailored to distinct architectural intent:

Pop-Up Stopper Assemblies (JN-5012 Series): Engineered with spring-loaded brass cartridges or umbrella click-clack mechanisms tested to over 50,000 actuation cycles without mechanical fatigue.
Flat Top & Grid Strainers (JN-1017, JN-9201 Series): Designed for public rest facilities and commercial institutions where water retention is restricted to prevent overflow vandalism. Precision-drilled or stamped grid holes block solid debris while facilitating rapid fluid clearance.
No-Caulk & Compression Strainers (JN-6301 Series): Featuring high-durometer EPDM elastomeric gaskets that create watertight mechanical compression seals without requiring traditional plumber's putty.

Smart Manufacturing & Logistics Resilience

China Factory 4.0 & Dual-Base Supply Chain (China + Thailand)

In response to volatile global trade dynamics, tariff restructurings, and supply chain vulnerabilities, JANA Plumbing offers an unmatched dual-manufacturing footprint. Our infrastructure ensures robust enterprise risk mitigation for high-volume distributors and OEM brands.

Yuhuan, Zhejiang Headquarters (China)

Operating since 1998, our 14,000 m² Yuhuan facility serves as our primary engineering hub. Integrated processes include high-pressure hydraulic forming, automated progressive stamping, multi-axis CNC turning centers, automatic robotic polishing, and laser engraving.

Full in-house mold and tooling development.
ISO 9001:2015 quality assurance management.
Integrated electroplating lines with closed-loop zero-discharge water recycling.

Kabinburi Plant (Thailand)

Becoming fully operational in December 2023 under Gateway Enterprise Corporation (Thailand) Co., Ltd., this 14,400 m² state-of-the-art facility features modern automated machinery designed to support seamless volume scale-up.

100% duty/tariff mitigation for North American importers.
Identical quality control specs and metallurgical testing as China HQ.
Strategic proximity to Laem Chabang Port for rapid international shipping.

Next-Gen R&D Innovation

Technical Roadmap & Future Outlook in Drain Technology

JANA Plumbing's R&D department actively drives innovation in sanitary hardware mechanics. Our future product pipeline incorporates smart material innovations and zero-leak engineering:

Magnetic Levitation Stoppers

Replacing traditional steel mechanical springs with corrosion-proof neodymium magnetic repulsion cores, eliminating mechanical spring failure and ensuring lifetime smooth spring back.

Silver-Ion Anti-Microbial Finishes

Infusing surface PVD coatings with silver nanoparticle formulations to actively inhibit bacterial film buildup, mildew growth, and drain odor formation in hospital and hotel basins.

Acoustic Flow Dampening

Utilizing internal hydro-kinetic dampening fins within tailpieces to suppress drainage noise in high-rise luxury residential developments.

Enterprise Procurement Matrix

Global Enterprise Sourcing: Custom OEM & ODM Capabilities

As a global B2B supplier, JANA Plumbing offers flexible manufacturing frameworks to meet private label brand demands, big-box hardware chains, and commercial project specs.

Customization Capabilities

Dimensional Thread Modifications: Straight NPSM, Tapered NPT, or BSPT thread pitches according to target geographic market.
Custom Finishes: Polished Chrome, Brushed Nickel, Matte Black, Oil-Rubbed Bronze, PVD Brushed Brass, and Rose Gold.
Laser Engraving & Branding: High-precision logo etching on flange rims, stopper tops, and locknuts.
Tailored Packaging Solutions: Customized retail color boxes, tamper-evident blister packaging, polybags, or heavy-duty bulk contractor packs.

Rigorous Quality Control Protocols

Every batch of sink strainers and stoppers leaving our factories undergoes strict internal quality inspections:

100% Pneumatic Leak Testing: Drains are tested under compressed air submerged in water to detect micro-porosity defects.
Thread Gauge Verification: Go/No-Go thread pitch verification to eliminate field installation issues.
Spectrometric Material Analysis: XRF alloy analyzer checks ensure lead content stays below 0.25% for compliance.

Regulatory & Code Compliance

Localized Support & International Code Assurance

Commercial plumbing hardware import demands strict compliance with municipal health codes and national safety frameworks. JANA Plumbing holds an extensive portfolio of international compliance certificates:

Code Certified

cUPC / UPC (IAPMO)

Full listing demonstrating compliance with ASME A112.18.2 / CSA B125.2 unified plumbing codes across North America.

Health Safe

AB1953 & NSF 372

Lead-free brass certification verifying wetted surface lead content does not exceed weighted average of 0.25%.

Management

ISO 9001:2015

Audited quality control system guaranteeing batch-to-batch consistency and complete raw material traceability.

Global Audit

BRC Standard

Verified manufacturing facility standards ensuring operational cleanliness, worker safety, and ethical trade integrity.

Technical Q&A

Frequently Asked Procurement Questions

Detailed technical answers addressing material selection, custom OEM specifications, and delivery logistics.

What products does JANA Plumbing manufacture?

JANA Plumbing manufactures solid brass and stainless steel sink strainers, bar sink strainers, disposer flange and stopper sets, lavatory drains, bath drains, shower drains, replacement sink, bath and shower drain parts, closet flanges, tank levers, shower arms and flanges, bottom grids, hoses, pipe fittings and decorative finishes.

Which certifications do JANA Plumbing products hold?

Our certificate portfolio includes UPC and cUPC listings, IAPMO and IAPMO R&T certificates, ISO 9001 quality management, AB1953 lead-free compliance and BRC, and our products are built to standards developed by ASME, NSF and CSA. Buyers can request the exact listing numbers that apply to each SKU before ordering.

Why does JANA Plumbing operate factories in both China and Thailand?

Our Yuhuan, Zhejiang headquarters has manufactured brass sanitary ware since 1998. In December 2023 our Thailand plant in Kabinburi Industrial Zone, Prachinburi became operational on 14,400 square meters with a focus on automated equipment, giving importers a second production origin to diversify supply-chain risk and optimize tariff structures.

Can JANA Plumbing produce OEM or private-label drains?

Yes. With in-house hydraulic forming, stamping, machining, polishing and packing, we can adapt specifications, finishes and packaging to customer requirements based on engineering drawings or samples.

Which markets does JANA Plumbing serve?

Our products are supplied to professional building retail, wholesale and RV markets, with a long-standing focus on North America, Europe, and the Asia-Pacific region.

What are your minimum order quantities (MOQs) and lead times for bulk production?

Standard catalog items carry an MOQ of 500–1,000 units per SKU depending on the finish and material specification. Typical production lead time ranges from 30 to 45 days after deposit confirmation, with accelerated schedules available from our Thailand base for recurring orders.

What type of rubber sealing gaskets are used in your sink stoppers?

We utilize high-grade EPDM and food-safe Silicone gaskets that maintain elasticity under continuous thermal exposure (-40°C to 120°C) and resist degradation from concentrated household surfactants and grease.

Catalog Showcase · Series II