Engineered Sink Hole Covers & Drainage Assemblies
High-durability plumbing components manufactured under strict dimensional tolerances and advanced hydraulic surface treatment.
Brass Round Umbrella Drain JN-5012-NOF
Precision cast body with spring-actuated umbrella core for overflow prevention.
China Brass Round Umbrella Drain JN-5012-NOF Manufacturer, Supplier
Stainless Steel Basket Strainer JN-1015-BN
Brushed nickel finish with deep post-catch basket for kitchen sink prep stations.
Wholesale Stainless Steel Basket Strainer JN-1015-BN Manufacturers, Suppliers
4" OD Strainer Grid JN-6325
Heavy-gauge stamped circular grid for industrial washbasins and shower sumps.
Wholesale 4" OD Strainer Grid JN-6325 Manufacturers, Supplier
Replacement Disposer Stopper JN-1114
NBR nitrile sealing perimeter engineered for commercial garbage disposal collars.
Wholesale Replacement Disposer Stopper JN-1114 Manufacturers, Supplier
Professional Pop-up Assembly JN-5008
Machined brass linkage mechanism built to withstand 50,000+ stroke cycles.
China Professional Pop-up Assembly JN-5008 Manufacturer, Manufacturers
Junior Duo Bar Sink Strainer JN-1201-T
Compact form-factor with integrated brass tailpiece for wet-bar wet stations.
Wholesale Junior Duo Bar Sink Strainer with tailpiece JN-1201-T Manufacturer, Factories
Compression Coupling JN-3004
Dezincification-resistant brass connector for rigid pipe joinery and retrofit plumbing.
Wholesale Compression Coupling JN-3004 Supplier, Suppliers
Three Prong Drain Protector JN-1402
Direct snap-fit cover preventing debris entry while sustaining peak laminar flow.
China Three Prong Drain Protector JN-1402 Manufacturers, FactoriesMacro Industry Dynamics: The Evolution of Sink Hole Covers
Sink hole covers, drain caps, and overflow trims have transitioned from simple aesthetic blanking plates into high-performance fluid control and hygiene containment boundaries.
Global Material Mandates
Supply chains face stringent compliance mandates regarding trace metal migration. Global plumbing codes such as California AB1953, NSF/ANSI 372, and the European Drinking Water Directive require sink drain fittings to keep lead content strictly below 0.25% w/w. Advanced brass alloys such as CW510L and forged C46500 have superseded cheap sand-cast alloys.
Commercial Anti-Bacterial Architecture
In healthcare, hospitality, and modular multi-family buildings, sink hole covers and strainers are critical anti-biofilm barriers. Seamless deep-drawn stainless steel (SS304/SS316) along with Physical Vapor Deposition (PVD) titanium coatings eliminate microscopic crevices where Legionella and pathogen cultures thrive.
Dual-Origin Supply Chain Resilience
Global tariff volatility and cross-border trade policy adjustments require international brand owners to diversify production origins. Operating modern manufacturing facilities in Yuhuan, China and an automated 14,400 m² plant in Kabinburi, Thailand gives our partners continuous supply redundancy, zero tariff vulnerability, and optimized freight logistics.
Localized Application Scenarios: Engineered for Exact Environments
A single standard does not fit all plumbing environments. We manufacture differentiated sink covers and strainers tailored to varying hydraulic loads and physical stresses.
High-Density Multi-Family & Residential
Demands quick contractor installation and long-term anti-seize performance. Features pre-assembled slip-joint tailpieces, solid brass bodies with extra-wide flange rims, and corrosion-resistant polymer gaskets that eliminate plumber's putty leaks.
Recreational Vehicle (RV) & Marine
Must withstand continuous vibration, thermal cycling, and weight constraints. Uses reinforced lightened brass and high-impact polymers designed to withstand dynamic flex and prevent seal integrity failures during travel.
Commercial Kitchens & Food Prep
Requires aggressive chemical resistance to oils and grease, boiling water exposure, and automated dishwasher cycles. Built with heavy-duty SS304 deep-draw strainers and heavy locknuts that resist chemical cleaners and mechanical wear.
Localized Support & Compliance Assurance
Navigating global mechanical building codes requires verified documentation and factory audits. We provide full traceability from ingot chemical spectrography to shipping documents.
North American Plumbing Standards (ASME / CSA / IAPMO)
Every sink hole cover, drain flange, and tailpiece assembly is engineered to meet or exceed ASME A112.18.2 / CSA B125.2 sanitary drain standards. JANA holds active UPC and cUPC listings (Certificate Nos. 6229, 8175, 12307, N-11587, T-11586) under IAPMO R&T oversight, verifying dimensional stability, thread integrity, and chemical safety.
Traceable Lead-Free Certification (AB1953 & NSF/ANSI 372)
Our casting and forging lines operate strict raw material segregation. X-ray fluorescence (XRF) spectrographic inspections test every heat lot for trace metals. This certified lead-free documentation gives wholesale distributors and retail buyers reliable legal defense against regional regulatory fines.
Technical Roadmap: The Next Generation of Sink Drainage
JANA Plumbing's R&D team continuously advances tooling, robotic automation, and green metallurgical finishing.
High-Throughput Robotic Polishing
Transitioning from manual hand-buffing to automated 6-axis robotic arm cells across our Zhejiang and Thailand plants. Ensures 100% surface uniformity, eliminates edge thinning on decorative flanges, and boosts weekly finishing yields by 45%.
Advanced PVD Thin-Film Finishes
Replacing traditional electroplating with eco-friendly Physical Vapor Deposition (PVD). Yields ultra-durable Matte Black, Brushed Brass, and Gunmetal Gray finishes that survive 96-hour neutral salt spray (ASTM B117) tests with zero surface degradation.
Low-Friction Anti-Clog Geometry
Using computational fluid dynamics (CFD) modeling to re-engineer underneath basket strainer grates. Smooth fluid vortex profiles maximize evacuation rates and minimize hair and grease buildup in both residential sinks and commercial disposers.
Specialized Sanitary Components & Tailpieces
Broad-spectrum plumbing conversion fixtures, pop-up kits, and high-efficiency drain fittings for global OEM private-label brands.
Brass Pop-up Assembly JN-5014-NOF-L
Extended tailpiece configuration designed for thicker stone and vessel sink bowls.
Wholesale Brass Pop-up Assembly JN-5014-NOF-L Manufacturer, Factory
Brass Trap Adapter JN-3002-B-M
CNC-machined threads ensuring airtight waste pipe transitions without binding.
Wholesale Brass Trap Adapter JN-3002-B-M Factories, Factory
Replacement Disposal Stopper JN-1103
High-durometer rubber seal for food waste disposers and prep sinks.
Wholesale Replacement Disposal Stopper JN-1103 Manufacturer, Suppliers
Side Mount Tank Lever JN-2001
Cast solid brass arm offering smooth mechanical actuation and long service life.
Wholesale Side Mount Tank Lever JN-2001 Manufacturer, Supplier
3-1/4" OD Snap-in Grid JN-6320
Spring-temper prongs provide a tight snap-in fit for quick replacement and retrofits.
China 3-1/4" OD Snap-in Strainer Grid JN-6320 Manufacturers, Supplier
Trip Lever Conversion Kit JN-6113
Complete bath overflow conversion kit engineered for fast plumbing remodels.
China Trip Lever Conversion Kit JN-6113 Supplier, Factory
Economy Plastic Strainer JN-1008-5-W
Engineered polypropylene body paired with stainless basket for value-focused projects.
Wholesale Economy Plastic Strainer JN-1008-5-W Manufacturers, Factory
China Sink Strainer JN-1021
Classic solid brass locknut assembly with deep threads for secure seal compression.
China Sink Strainer JN-1021 Factories, FactoryFrequently Asked Questions
Clear technical answers on engineering tolerances, material certifications, and supply chain logistics for plumbing procurement teams.
What metallurgical compositions define JANA's solid brass sink hole covers and strainers?
We cast and forge using premium dezincification-resistant (DZR) brass alloys meeting ASTM B584 / C84400 standards and low-lead copper matrices compliant with California AB1953 and NSF/ANSI 372. This metallurgical control prevents stress-corrosion cracking and maintains structural integrity when exposed to harsh municipal water chemistries.
How does the dual-production model (China & Thailand) mitigate importer tariff and lead-time risks?
Our headquarters in Yuhuan, China (established in 1998) handles mature tooling and high-precision casting. In December 2023, Gateway Enterprise Corporation (Thailand) Co., Ltd. began operations at our 14,400 m² automated facility in Kabinburi. Importers can place orders through either facility under identical quality control standards, avoiding regional punitive tariffs and securing reliable ocean container delivery to North American and European ports.
Which mechanical codes and plumbing certificates validate these products for retail and commercial specs?
Our drainage components hold verified UPC and cUPC listings through IAPMO R&T (including Certificate Nos. 6229, 8175, 12307, N-11587, T-11586). Products are engineered to ASME A112.18.2/CSA B125.2 standards, backed by ISO 9001-certified quality systems and verified through third-party BRC facility audits.
Can JANA support bespoke OEM/ODM custom tooling and private-label decorative finishes?
Yes. Our in-house engineering team provides end-to-end OEM and ODM support, including mold design, CNC tooling, progressive die stamping, and custom laser-etched branding. We offer a full range of durable finishes, including PVD Brushed Nickel, Matte Black, Oil Rubbed Bronze, Polished Chrome, and Raw Brass, with packaging tailored for retail shelving or bulk contractor kits.
What quality assurance testing is performed on every production run prior to export?
Every production lot undergoes rigorous multi-step QA: XRF spectrometer alloy composition analysis, optical thread-gauge tolerance checks, hydrostatic pressure testing up to 22 psi to verify seal integrity, and ASTM B117 salt spray testing to confirm finish adhesion and corrosion resistance.