Direct OEM / ODM Manufacturing Engineering

Wholesale 19 Hole Grid Drain Manufacturer & Suppliers

Precision-Engineered Solid Brass & Stainless Architectural Drainage Systems. Built to Stringent ASME A112.18.2 / CSA B125.2, UPC, and cUPC Specifications for Global Commercial, Hospitality, and High-Traffic Installations.

Primary Commercial Assemblies

High-Spec Plumbing Assemblies & Drains

Explore our certified hydraulic line manufactured under IAPMO R&T, UPC, and ISO 9001 guidelines across our dual manufacturing facilities in China and Thailand.

Engineering Deep-Dive

Evolution & Hydrodynamic Logic of the 19-Hole Grid Drain

Analyzing flow dynamics, anti-vandalism mechanics, and structural superiority over conventional pop-up assemblies in high-traffic public installations.

Optimized Fluid Discharge Geometry

Traditional lavatory drains often suffer from fluid choking due to inadequate aperture layout. The 19-hole configuration balances hydraulic laminar discharge with particulate filtration, guaranteeing maximum drainage velocity (up to 7.2 GPM) while effectively mitigating airborne sewer gases and particulate back-clogging.

Tamper-Proof Anti-Vandal Integrity

Unlike mechanical pop-up, toe-touch, or lift-and-turn drains that present detachable stoppers vulnerable to theft and vandalism, the one-piece cast brass 19-hole grid drain eliminates all moving mechanisms. This tamper-proof construction represents the default choice for airports, educational campuses, and municipal venues.

Mitigation of Overflow Flooding

Open grid architecture operates on an unclosable principle. Combined with factory precision-punched overflow window cutouts, it ensures lavatory sinks cannot be intentionally obstructed to induce accidental flooding, safeguarding multi-story facilities against structural water damage.

100%
Solid C46500 / CW510L Lead-Free Brass Construction
>7.2 GPM
Verified Discharge Rate at 0.5 PSI Head Pressure
Zero
Detachable Mechanical Linkages (Zero Tampering Vulnerability)
200+ hrs
Neutral Salt Spray (NSS) ASTM B117 Corrosion Endurance
B2B Supply-Chain Matrix

Enterprise Procurement Criteria & Commercial Solutions

Addressing supply chain continuity, tariff optimizations, and technical compliance across multi-national plumbing distribution channels.

Dual-Facility Resilience

Dual-hub manufacturing in Yuhuan, China (est. 1998) and Kabinburi, Thailand (14,400 m², operational Dec 2023) equips buyers to navigate fluctuating tariffs, Section 301 penalties, and geopolitical disruptions smoothly.

Comprehensive Lead-Free

Every lot conforms with the strict heavy-metal thresholds dictated by California AB1953, NSF/ANSI 372, and the federal US Safe Drinking Water Act (SDWA), validated through batch spectrometry certificates.

Tailpiece & Thread Rigidity

Seamless 17-gauge or 20-gauge tubular brass or 304 stainless steel tailpieces connected via rolled precision threads ensure strip-proof fastening under contractor wrench loads during heavy commercial retrofits.

End-to-End OEM/ODM Customization

Comprehensive custom manufacturing including specialized PVD finishes (Matte Black, Brushed Bronze, Polished Nickel), branded laser etching, custom box barcodes, and contractor blister packs engineered to client specs.

Standard Engineering Parameters

Commercial Specification Matrix: 19 Hole Grid Drains

Mechanical benchmarks conforming to ASME A112.18.2 / CSA B125.2 sanitary drain plumbing regulations.

Engineering Attribute Standard Specification Parameter Material Grade / Verification Application Scenario
Grid Aperture Design 19 Symmetric Stamped Flow Orifices (0.24" / 6.1mm) Hydrodynamically calibrated for rapid discharge Commercial lavatories, schools, transit centers
Body Core Construction Heavy-Duty Solid Forged/Cast Brass or SUS304 C46500 Lead-Free Brass (AB1953 compliant) High-wear hospitality & institutional restrooms
Sink Hole Opening Accommodation Standard 1-1/2" to 1-3/4" (38mm - 45mm) Sink Cutouts Universal commercial porcelain & vessel seating Undermount, drop-in, and wall-hung lavatories
Tailpiece Dimensions 1-1/4" OD (Standard) × 4", 6", 8", or 12" Extended Lengths 17-Gauge or 20-Gauge Seamless Brass / Stainless Contractor-friendly direct connection to P-Trap
Overflow Architecture Dual-Port Cast-in Overflow OR Non-Overflow Solid Barrel Precision hydraulic CNC milled pass-through slots Basins with internal overflow cavities or solid sinks
Surface Plating Durability Electroplated Chrome, PVD Satin Nickel, Matte Black ASTM B117 >200 Hrs Salt Spray Resistant Commercial detergents & harsh cleaning agent resilience
Quality Assurance & Industry Horizon

Compliance Governance & Technological Roadmap

How JANA Plumbing safeguards quality control through advanced metallurgy, automated robotic machining, and future-ready manufacturing.

Full Heat-Batch Traceability

Every foundry cycle undergoes automated optical emission spectroscopy (OES) analysis. Raw ingot composition is cross-referenced with mill certifications to ensure strictly regulated zero-lead compliance before hydraulic extrusion and CNC stamping.

Robotic Polishing & CNC Tolerances

Our Kabinburi automated plant uses 6-axis robotic arms for mirror surface polishing. Multi-axis CNC threading guarantees standardized thread clearances conforming strictly to ANSI B1.20.1 NPT & NPSM thread profiles, preventing leaks.

Future Horizons: Eco-PVD Metallurgy

Pioneering closed-loop physical vapor deposition (PVD) finishes with zero VOC discharge. Developing next-generation antimicrobial ion-sputtered grids targeted at healthcare, hospital basins, and sterile cleanroom drainage systems.

Procurement Knowledge Base

Frequently Asked Questions: Grid Drains & Wholesale Supply

Answers to technical specifications, import logistics, certifications, and manufacturing limits.

Why is a 19-hole grid drain preferred in commercial settings over standard pop-up drains?
A 19-hole grid drain is specifically engineered for high-abuse commercial environments (such as schools, airports, shopping malls, and healthcare facilities). Unlike pop-up or mechanical stopper drains, the 19-hole grid drain has no moving parts, no linkages to break, and cannot be removed or stolen. Additionally, its perpetually open grid design prevents intentional basin blockage and consequent facility overflow flooding, making it a mandatory specification for institutional civil engineering projects.
What is the practical difference between models with overflow vs. without overflow?
Models with overflow feature precision-cut openings located along the threaded brass barrel. These openings align with the internal drainage chamber of vitreous china sinks that feature built-in overflow channels. Models without overflow feature a completely solid cylindrical barrel designed exclusively for vessel sinks, glass basins, or stone lavatories where no internal overflow cavity is present, preventing water from leaking out via the threads.
How does JANA Plumbing support multi-origin supply chain strategies?
JANA operates two extensive production ecosystems: our long-standing industrial headquarters in Yuhuan, Zhejiang, China (active since 1998) and Gateway Enterprise Corporation in Kabinburi, Thailand (spanning 14,400 m², completed in Dec 2023). This provides international B2B distributors and North American OEMs the strategic capability to originate shipments out of Thailand, effectively bypassing Section 301 tariffs and providing resilient risk mitigation against trade policy updates.
What certifications apply to these drainage assemblies for North American compliance?
Our products hold formal listings under UPC and cUPC, certified by IAPMO R&T to meet ASME A112.18.2 / CSA B125.2. Furthermore, our raw metal alloys strictly comply with California AB1953 and NSF/ANSI 372 lead-free mandates (lead content ≤ 0.25%). Our manufacturing plants operate strictly under ISO 9001:2015 quality management procedures, and customers can request specific listing file numbers prior to commercial PO signoff.
What are the minimum order quantities (MOQs) and OEM lead times?
Standard OEM production batches typically require an MOQ of 500 to 1,000 units per individual finish and SKU. Production turnarounds range from 30 to 45 business days depending on customized finishes (Chrome, Matte Black, Brushed Nickel, PVD) and specific packaging requirements (bulk contractor cases versus individual full-color retail barcode boxes).
Expanded Fitting & Drain Portfolio

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