Featured Wholesale Drain Assemblies & Plumbing Components (Part 1)
Direct factory supply featuring solid brass forgings, precision CNC threads, and heavy-duty decorative electroplated finishes engineered for high-volume commercial and residential procurement.
Engineering Whitepaper: Heavy-Duty Brass Bathtub Drain Architecture
In modern commercial, luxury hospitality, and high-density residential developments, the choice of bathtub waste and overflow hardware is a critical operational parameter. While low-cost zinc die-cast and ABS plastic alternatives dominate budget retail shelves, master plumbers, mechanical contractors, and premium sanitary brand managers overwhelmingly specify Solid Forged Brass Bathtub Drain Assemblies. Solid brass provides structural integrity, chemical resistance against aggressive municipal water treatments, and thermal stability that prevents stress cracking over decades of usage.
Metallurgical Superiority: C37700 & DZR Alloys
Our brass bathtub drain bodies are manufactured using high-grade C37700 hot-forging brass and specialized De-zincification Resistant (DZR) copper alloys (CW602N / CZ132). Zinc leaching in acidic or soft water environments causes internal mechanical degradation in lower grade fittings. By maintaining copper purity between 57.0% and 60.0% with strict micro-alloying control, JANA Plumbing guarantees long-term crystalline stability without micro-fracturing or wall thinning.
Lead-Free Compliance & Environmental Safety
Adhering to strict North American and European environmental mandates—including US Safe Drinking Water Act standards, California AB1953, and NSF/ANSI 372—our lead-free brass formulations keep maximum lead content strictly below 0.25% weighted average. This ensures full regulatory compliance across North American state codes, facilitating effortless customs clearance and wholesale distribution.
| Material Standard | Copper (Cu) % | Lead (Pb) % | Iron (Fe) % | Zinc (Zn) % | Tensile Strength (MPa) |
|---|---|---|---|---|---|
| C37700 Forging Brass | 57.0 – 60.0% | 1.5 – 2.5% | ≤ 0.30% | Balance | ≥ 380 MPa |
| AB1953 Lead-Free Brass | 58.0 – 62.0% | ≤ 0.25% | ≤ 0.15% | Balance | ≥ 400 MPa |
| DZR Brass (CW602N) | 61.0 – 63.0% | 1.0 – 2.5% | ≤ 0.10% | Balance (As 0.02-0.15) | ≥ 420 MPa |
Bathtub Drain Actuation Mechanisms & Functional Classification
As a leading OEM/ODM manufacturer, JANA Plumbing engineers diverse mechanical stopper systems tailored to specific global markets, regional plumbing standards, and end-user ergonomic preferences.
Lift & Turn Drain Assemblies
Utilizing an internal stainless steel pin and spiral channel, Lift & Turn drains operate via a manual quarter-turn uplift. Highly favored in commercial hospitality for rugged durability and minimal maintenance.
Push-Button / Touch-Toe Systems
Featuring a heavy-duty stainless steel internal spring mechanism, foot-actuated Touch-Toe stopper assemblies deliver seamless tactile operation. Tested to over 100,000 actuation cycles without seal degradation.
Trip Lever & Linkage Assemblies
Constructed with fully adjustable solid brass linkage rods (such as model JN-6202), Trip Lever drains position the mechanical stopper inside the overflow pipe, protecting the moving parts from hair and debris.
Our brass bathtub drain strainers feature precision-machined 1-1/2" NPSM (National Pipe Straight Mechanical) threads and 1-7/8" UNC coarse threads with CNC-chased crests. This minimizes cross-threading during high-speed field installation, ensuring an airtight seal against sanitary rubber gaskets and plumber's putty.
Strategic Dual-Origin Manufacturing Supply Chain: China & Thailand
Mitigating tariff risks and securing geopolitical supply chain continuity for global sanitary distributors, big-box retailers, and OEM brand owners.
Yuhuan, Zhejiang Headquarters (China Base)
Operational since 1998, our Yuhuan headquarters serves as our global engineering, tooling development, and heavy hydraulic forging hub. Spanning over 14,000 square meters, this facility houses high-speed multi-axis CNC turning centers, automated polishing lines, and fully integrated electroplating baths for custom finish development.
Kabinburi Industrial Zone (Thailand Plant)
To eliminate Section 301 tariffs and antidumping duties for North American importers, Gateway Enterprise Corporation (Thailand) Co., Ltd. commenced full operations in December 2023. Located in Prachinburi Province, this 14,400 m² state-of-the-art facility features automated robotic assembly, inline pressure testing, and direct export capabilities under Form E certificate origin rules.
Global Compliance & Regional Plumbing Code Alignment
Ensuring seamless market access across North America, Europe, Australia, and the Middle East through certified laboratory testing and international code approvals.
cUPC & ASME A112.18.2 / CSA B125.2
Our brass bathtub drains carry official IAPMO R&T listing status (File No. 6229 & 8175), fully conforming to uniform plumbing codes across all US states and Canadian provinces. Products pass rigorous physical force, thread shear, and hydrostatic seal tests.
EN 274 European Standard
Engineered for European architectural applications, selected drain assemblies feature G 1-1/2" parallel threads, integrated water trap seals (min. 50mm depth of seal), and high drainage capacity exceeding 0.8 L/s under EN 274 testing conditions.
Surface Finish Durability (CASS & PVD)
To resist tarnishing and harsh bathroom cleaning chemicals, decorative coatings undergo 96-hour Neutral Salt Spray (NSS) and 24-hour Copper-Accelerated Acetic Acid Salt Spray (CASS) tests. Available finishes include PVD Brushed Brass, Chrome, Matte Black, and Antique Bronze.
B2B OEM/ODM Customization Framework & Sourcing Capabilities
We provide end-to-end manufacturing solutions for private-label sanitary brands, wholesale stocking distributors, and high-volume retail chains.
Custom Laser Marking & Brand Packaging
Integrated high-precision fiber laser markers apply custom brand logos, UPC barcode identification, and part tracking numbers directly onto overflow faceplates and drain strainers. Flexible packaging capabilities include retail clamshells, colored display boxes, and bulk contractor polybags.
Custom Engineering & Rapid Prototyping
Our internal R&D engineering team utilizes 3D CAD modeling, mold-flow analysis, and rapid SLA prototyping to take custom drain concept sketches to physical sample approval within 15 working days. Tooling design and extrusion dies are produced entirely in-house.
Localized Application Scenarios & Architectural Integration
Engineered to excel across diverse building environments, from high-humidity coastal resorts to heavy-use residential developments.
5-Star Luxury Hospitality
Freestanding acrylic and cast-iron clawfoot tubs in luxury hotels require flawless PVD aesthetic finishes paired with whisper-quiet mechanical closure. Our heavy-brass cable-driven drains provide an ultra-luxurious guest experience.
High-Density Multi-Family Housing
Property developers demand leak-free reliability to prevent catastrophic inter-floor water damage. JANA brass drain bodies utilize high-grade EPDM and silicone washers that retain memory and sealing tension over multi-year tenant cycles.
Recreational Vehicles (RV) & Marine
Vibration-heavy transport applications require non-loosening slip joint connections and compact space dimensions. Our specialized brass slip-joint nuts and overflow elbows absorb road vibration without seal displacement.
Frequently Asked Questions (FAQ) for Procurement Managers
Technical details and supply chain insights to help technical buyers, sourcing engineers, and importers make informed purchasing decisions.
What materials are used in JANA Plumbing’s brass bathtub drain bodies?
How does manufacturing in Thailand benefit North American buyers?
What standard thread sizes are available on your waste and overflow drains?
What testing procedures ensure zero-leakage quality control?
Can JANA Plumbing match custom finish samples (e.g., Brushed Gold, Matte Black)?
What is the typical Minimum Order Quantity (MOQ) for OEM orders?
Are your bathtub drain assemblies compliant with UPC and cUPC codes?
What gasket materials are included in your drain kit assemblies?
Wholesale Sanitary Hardware & Brass Plumbing Accessories (Part 2)
Complete your wholesale product portfolio with our certified sanitary fittings, lavatory drains, slip joint nuts, and heavy-duty sink strainers.
