Featured Wholesale Plumbing Assemblies & Drain Fitting Components
Explore primary OEM products manufactured across our automated Zhejiang and Thailand production centers, engineered for full compliance with North American plumbing standards.
Wholesale Disposer Flange & Stopper Set JN-1309 Factories, Factory
Wholesale Plastic Pop-up Assembly With Chrome Plated JN-5015-2 Manufacturer, Factory
China EZ Lock Basket Strainer JN-1011-2 Manufacturers, Factories
Wholesale Deep Junior Duo Basket Strainer JN-1206 Manufacturer, Suppliers
China Replacement Strainer Basket JN-1115 Manufacturers, Factory
Wholesale Economy Plastic Strainer JN-1008-5 Supplier, Suppliers
Wholesale Stainless Steel Shoulder Strainer JN-1403 Manufacturer, Factory
China Side Mount Tank Lever JN-2012 Manufacturer, Manufacturers
Hydrodynamic Engineering & Global Market Evolution of 19 Hole Overflow Plates
Analyzing fluid mechanics, surface tension mitigation, and structural metallurgy in modern bath waste overflow systems.
1. Hydrodynamic Efficiency & Surface Tension Dissipation
The transition from legacy 2-hole overflow plates to modern multi-port matrices, specifically the 19 hole overflow plate design, represents a major advance in architectural bath waste management. Traditional dual-slot overflow plates frequently suffer from localized hydraulic resistance and localized surface tension locks during high-volume fill scenarios.
By distributing water evacuation across nineteen micro-apertures engineered with a precise geometric pitch, the plate creates a multi-point suction pressure differential. This layout prevents localized vortex formation and air locking, allowing smooth water clearance up to 14.8 GPM (Gallons Per Minute) under gravity-head test protocols. This level of flow control easily meets strict ASME A112.18.2 / CSA B125.2 mandates.
2. Architectural Trends & Aesthetic Surface Treatments
Commercial and residential architectural specifications increasingly favor concealed or micro-patterned overflow hardware. Modern luxury hotel brands, multi-family residential developers, and high-end plumbing distributors demand overflow plates that blend smooth drainage performance with sleek aesthetic styles.
The 19 hole grid configuration provides a clean visual matrix that effectively conceals internal waste pipe shadow lines while serving as a secondary debris filter. Furthermore, advanced finishing technologies like Physical Vapor Deposition (PVD) enable factories to deliver long-lasting finishes—such as Matte Black, Brushed Nickel, Oil Rubbed Bronze, and Champagne Gold—capable of passing 200+ hours of Neutral Salt Spray (NSS) corrosion testing without flaking or pitting.
Technical Takeaway for Sourcing Managers: Upgrading your bath waste product catalog to high-flow 19 hole overflow plates reduces consumer overflow risk by up to 34% compared to standard dual-slot plates, while offering a modern look that supports higher retail price margins.
Enterprise Procurement Criteria & Global Sourcing Optimization
How wholesale buyers, OEM brands, and RV manufacturing groups evaluate supplier reliability, material stability, and total cost of ownership (TCO).
Metallurgical Compliance
Leading global buyers demand total compliance with low-lead and lead-free legislation. Sourcing high-grade C37700 hot-forged brass or SUS304 stainless steel guarantees compliance with California AB1953 and NSF/ANSI 372 standards, avoiding costly legal and compliance exposure in North American markets.
Dual-Origin Manufacturing
Geopolitical risks and tariff shifts require supply chains with multi-region redundancy. Maintaining production hubs in both Yuhuan, Zhejiang, China and Kabinburi, Thailand gives procurement teams supply chain flexibility and protection against unexpected tariff or trade policy changes.
Precision Tooling & Custom OEM
Custom mounting screw center-to-center measurements, specialized bezel rim beveling, and custom private-label laser etching require high-precision progressive stamping dies and fully automated machining lines capable of strict ±0.05mm dimensional tolerances.
Technical Metallurgy & Material Performance Comparison
| Material Alloy / Grade | Tensile Strength (MPa) | Corrosion Resistance Protocol | Lead Content Compliance | Ideal Application Sector |
|---|---|---|---|---|
| C37700 Solid Brass | ≥ 440 MPa | 200 Hr Neutral Salt Spray (NSS) | < 0.25% Weighted Avg (AB1953) | Commercial Luxury Bath & OEM Wholesale Kits |
| SUS304 Stainless Steel | ≥ 520 MPa | 300 Hr CASS Accelerated Fog Test | 100% Lead-Free Native Matrix | High-Traffic Hospitality & Marine RV Systems |
| C36000 Free-Cutting Brass | ≥ 390 MPa | 96 Hr Standard Salt Spray | Low-Lead Plumbing Fitting Approved | Precision Threaded Mounting Fasteners |
| Engineered ABS / Chrome Plated | ≥ 45 MPa | 24 Hr Humidity Cycling Test | Polymer Neutral Composition | Economy Manufactured Housing & Value Kits |
JANA Plumbing: 28+ Years of Sanitary Ware Engineering Leadership
Founded in 1998, JANA PLUMBING CO., LTD. operates advanced manufacturing operations spanning Zhejiang, China and Prachinburi, Thailand.
Vertically Integrated Production Excellence
JANA Plumbing controls every key production stage under one unified quality system—from raw brass rod extrusion and hydraulic forging to progressive stamping, CNC lathe machining, robotic polishing, electroplating, and automated air/water pressure packaging checks.
Our dual-origin facility infrastructure includes:
- China Headquarters (Yuhuan, Zhejiang): Established 1998, serving as our primary R&D center, precision mold studio, and main manufacturing base.
- Thailand Factory (Kabinburi, Prachinburi): Active since December 2023, covering 14,400 m² with robotic automation lines designed for rapid duty-free export.
- Total Operational Scale: 28,400 m² footprint, 200+ trained engineering professionals, and an annual production output exceeding 15 million drain units.
Verified Supplier Credentials
- Year Founded
- 1998 (Yuhuan, China)
- Thailand Expansion
- Dec 2023 (14,400 m²)
- Core Certifications
- UPC, cUPC, IAPMO, ISO 9001, AB1953, BRC
- Primary Export Markets
- USA, Canada, Mexico, Europe
- Compliance Standards
- ASME A112.18.2 / CSA B125.2
- In-House QC Testing
- 100% Air/Hydro Static Checks
Global Regulatory Compliance & Quality Management Systems
Comprehensive third-party audit documentation ensuring seamless customs clearance and retailer compliance for major North American building supply channels.
UPC & cUPC Listings
Issued by IAPMO R&T, our product listings (Certificates No. 6229, 8175, 12307, N-11587, N-12352, T-11586) confirm strict adherence to Uniform Plumbing Code requirements across the United States and Canada.
ISO 9001 & BRC Audits
Our quality management systems follow ISO 9001 certification frameworks, alongside global BRC audit standards for full lot traceability, material heat tracking, and process control.
AB1953 Lead-Free Protocol
Comprehensive metallurgical spectral testing guarantees that wetted brass surfaces remain under 0.25% weighted lead content, protecting end consumers and exceeding safety mandates.
Future Engineering Roadmap: Next-Generation Overflow Assemblies
Integrating smart sensor diagnostics, bio-film resistant nanocoatings, and circular scrap metal recycling models.
1. Antimicrobial Surface Engineering & Nanocoatings
JANA Plumbing's advanced R&D lab is testing secondary hydrophobic nanocoatings applied over standard PVD finishes. These ultra-thin fluoropolymer and silver-ion matrix coatings reduce soap scum accumulation and prevent bacterial biofilm formation inside overflow openings, lowering maintenance needs in luxury hotel bath fixtures.
2. Circular Manufacturing & Scrap Recovery Systems
Our production facilities operate full-cycle closed-loop brass scrap recovery. 100% of brass chips and stamping cut-offs generated during the production of 19 hole overflow plates are melted down and re-processed in-house using induction furnaces, lowering carbon footprint per unit by 28% compared to industry averages.
Frequently Asked Questions: 19 Hole Overflow Plates & OEM Sourcing
Detailed technical and commercial guidance from our engineering desk to help streamline your procurement evaluation.
Additional Specialized Sanitary Ware & Drain Fitting Components
Explore our expanded range of commercial sink strainers, bath waste conversion kits, side-mount tank levers, and protective sink bottom grids.
China Replacement Strainer Basket JN-1118 Manufacturers, Factory
China 4-1/4" OD Snap-in Strainer Grid JN-6321 Manufacturers, Supplier
China 2 Hole Overflow Plate JN-6105 Manufacturers, Supplier
Wholesale Pop-up, 2 Piece Brass Chrome JN-5020 Suppliers, Factory
China Kitchen Sink Bottom Grid, Antique Brown JN-9888-9-ABP Manufacturers, Suppliers
Wholesale Economy Plastic Tray Plug Bar Sink Strainer JN-1204 Manufacturers, Suppliers
China Lift & Turn Bath Waste Conversion Kits JN-6109 Suppliers, Factory
China Professional Pop-up Assembly JN-5008 Manufacturer, Manufacturers
Contact JANA Plumbing OEM Engineering Operations
Submit your engineering drawings or request product catalogs directly from our technical sales directors.
China Headquarters & Operations
Company: JANA PLUMBING CO., LTD.
Address: 52-1 Fugang Road, Bingang Industrial Zone, Shamen Town, Yuhuan, Zhejiang, China, 317607
Sales Direct Email: [email protected]
Mobile / WhatsApp: +86-18658419838
Desk Line: +86-574-83095836 / 83095837 / 83095838
Thailand Operations
Facility: Gateway Enterprise Corporation (Thailand) Co., Ltd.
Address: 454/10 Moo 9 Kabinburi Industrial Zone, T. Nongki, A. Kabinburi, Prachinburi 25110, Thailand
Facility Scale: 14,400 m² Automated Manufacturing Hub
Primary Export Hub: Laem Chabang Deep Sea Port