The End of Improvised Rubber & Linoleum Drain Covers!
SEONGJIN SafeDrain
"98.4% Hermetic Seal Against Odors & Pests During Dry Weather โ Instant Automatic Gravity Drainage During Storms"
Completely eliminates frequent spring breakdowns, corrosion, and clogging typical of conventional plastic drain valves. Powered purely by self-weight gravity and high-resilience silicone without springs or electricity, it hermetically seals urban street drains, then instantly flips open under the weight of incoming rainwater to prevent flash flooding. A semi-permanent, innovative public infrastructure and smart city drainage solution engineered by SEONG JIN.
98.4%
Official KCL Certified Odor Blockage
Minimal
Zero Springs / Motors, Zero Breakdown
STS 304
1.2T POSCO Stainless Steel Anti-Corrosion
Smart City
Public Infrastructure & Global B2B Standard
Witness the Self-Weight Gravity Seal Mechanism in Action
Hermetically sealed during dry days to block fumes and pests; automatically opened by rainwater weight during storm events.
Pure Physical Engineering with Zero Breakable Moving Parts
Free of corroding springs, electronic motors, or complex gears โ maintaining identical performance for decades.
1. Airtight Hermetic Seal (Odor & Pest Defense)
High-elasticity silicone flaps naturally seal against the frame under gravitational self-weight and elastic recovery, completely blocking foul sewer gases, mosquitoes, and cockroaches.
2. Instant Gravitational Opening Upon Rainfall
At the very first droplets of rain, the water's downward weight effortlessly pushes the flaps open, discharging early stormwater into the sewer without any delay.
3. High-Capacity Storm Drainage
Proprietary 2-way and 4-way dual/quad chute geometries with steep descent angles drain massive flood volumes instantly, preventing downtown street inundation.
4. Self-Cleaning Anti-Clogging Slopes
Super-steep chute angles prevent silt, sand, fallen leaves, and debris from accumulating on walls, naturally washing them through with running water to minimize dredging.
5. POSCO STS 304 Stainless Steel Body
Precision laser-cut, CNC-folded, and riveted 1.2T POSCO stainless steel provides permanent resistance to de-icing salt (calcium chloride), corrosive sewer gas, and heavy truck axle loads.
6. Direct Drop-In Standard Installation
Engineered to drop straight underneath existing standard city road gratings in under 5 minutes without roadway demolition, concrete cutting, or civil engineering disruption.
2-Way & 4-Way Standard Model Specifications & Dimensions
Covering over 95% of municipal drainage catch basins nationwide, with full custom OEM fabrication for all international standards.
| Dimensions (WรL, mm) | Model ID | Type | Primary Application | Key Features |
|---|---|---|---|---|
| โญ 400 ร 500 | SJ-204005 | Most Popular | Sidewalks, residential streets, commercial alleys | #1 Core Standard Specification nationwide |
| โญ 600 ร 600 | SJ-206006 | Most Popular | Arterial roadsides, intersections, public facilities | Universal Public Procurement Standard |
| โญ 600 ร 1200 | SJ-206012 | Most Popular | Boulevards, high-traffic intersections, flood zones | 2x Inflow Capacity ยท Dual Chute Maximized |
| 600 ร 1000 | SJ-206010 | 2-Way Medium | Dense commercial areas & odor complaint zones | Large dual-chute concentrated odor blocking |
| 700 ร 700 | SJ-207007 | 2-Way Medium | Residential intersections & alleyway catch basins | Self-weight airtight hermetic seal |
| 700 ร 1000 | SJ-207010 | 2-Way Medium | School zones, government offices, civic plazas | Zero Odor Complaint Zone Solution |
| 800 ร 800 | SJ-208008 | 2-Way Large | Large square manhole collection basins | Wide dual-chute high-volume drainage |
| 800 ร 1000 | SJ-208010 | 2-Way Large | Industrial park roadsides & logistics hubs | Chemical and corrosive gas resistance |
| 900 ร 900 | SJ-209009 | 2-Way Large | Large public facility stormwater collection wells | High-volume storm intake |
| 900 ร 1200 | SJ-209012 | 2-Way Large | Underground roadways & tunnel entrances | Anti-inundation rapid drainage design |
โญ SEONGJIN SafeDrain 2-Way Standard Model Authentic Details
- Top 3 Core Sizes: 400ร500 (2-Way) / 600ร600 (2-Way) / 600ร1200 (2-Way)
- Custom Orders: Full custom OEM fabrication for all international drawings
- Body Material: POSCO Certified STS 304 1.2T Stainless Steel
- Flap Material: High-resilience, weather-resistant patented industrial silicone
- Global Operations: SEONG JIN / Certified Production: Seongji Co., Ltd.
Conventional Improvised Covers vs SEONGJIN SafeDrain
Overcoming the catastrophic hazards of illegal rubber mats and brittle plastic spring valves.
โ Illegal Rubber Mats & Brittle Plastic Spring Products
- โ ๏ธ Induces Urban Flooding: Improvised rubber mats cover street grates to block odor, suffocating drainage during heavy downpours and causing road inundation.
- โ ๏ธ Wasted Municipal Budgets: City governments spend millions annually confiscating illegal covers and paying cleanup disposal costs.
- โ ๏ธ Frequent Spring Failure: Metal springs rust and snap within 1 to 2 years, leaving flaps permanently stuck open.
- โ ๏ธ Severe Silt & Debris Clogging: Low slope angles trap mud, cigarette butts, and garbage, completely neutralizing odor blocking.
- โ ๏ธ Brittle Under Heavy Loads: Generic plastic bodies crack and shatter under heavy truck wheels.
โ SEONGJIN SafeDrain
- โจ 98.4% Hermetic Airtight Seal: Gravitational self-weight and silicone elasticity completely seal sewer gas, mosquitoes, and roaches.
- โจ Instant Automatic Storm Drainage: Opens instantly under the physical weight of rainfall, proactively preventing flash floods.
- โจ Zero-Maintenance Lifespan: Zero moving mechanical springs or motors, ensuring over 10+ years of maintenance-free operation.
- โจ Self-Cleaning High-Angle Slopes: Steep chute angles wash away sediment, leaves, and debris automatically with water flow.
- โจ POSCO STS 304 Rugged Durability: Immune to heavy truck axle loads, and 100% resistant to winter road de-icing calcium chloride.
Comprehensive Drainage & Odor Barrier Technical Benchmark
| Evaluation Criteria | Conventional Spring / Plastic Traps | SEONGJIN SafeDrain (Patent 10-2329278) | Technical Advantage |
|---|---|---|---|
| 1. Sealing Mechanism | Counterweights, hinges, metal springs Frequent Failure | Silicone Flap Self-Weight Elasticity Patented Tech | Permanent Elastic Recovery |
| 2. Body Material | Generic plastic, zinc-plated steel Corrosion & Crack | Authentic POSCO STS 304 1.2T Semi-Permanent | Zero Rust & Zero Corrosion |
| 3. Flap Material | Plastic, sheet metal Hardening & Warping | Patented High-Resilience Silicone 20-Year Lifespan | Superior Heat/Cold/Chemical Proof |
| 4. Drainage Throughput | Shallow slopes trap debris, poor drainage Flood Hazard | Steep High-Angle Chute, Instant Discharge Flood Prevention | Zero Debris Accumulation |
| 5. Pest Vector Control | Flap gaps allow mosquitoes and roaches Ineffective | 98.4% Certified Hermetic Seal KCL Certified | Gravitational Airtight Barrier |
| 6. Chemical Spray Retention | Open vents leak municipal insecticide fumes | Hermetic seal retains chemical vapors inside sewer Maximized Effect | 2x Pest Control Efficiency |
| 7. Structural Load Capacity | Plastic cracks under heavy axle loads | Supports heavy truck loads, zero salt corrosion High Strength | 0% Structural Failure Rate |
| 8. Urban Aesthetics & Street Hygiene | Illegal rubber mats clutter sidewalks Complaints Surge | Eradicates sewer stench, creates clean streets Solves Complaints | Dramatically Improves City Image |
| 9. Maintenance & Lifecycle Cost | Frequent repairs, dredging, spring replacements Budget Drain | Zero breakable parts! Minimal 10-year cost Budget Savings | Minimizes Municipal Budgets |
Government-Certified & Patent Office Granted Engineering
Click each certificate card to view high-resolution authenticated official documents.
โ๏ธ Official Intellectual Property & Rights Architecture
Worldwide Exclusive License Officially CertifiedMido Industry (CEO Won-Chul Choi)
โข Patent No. 10-2329278 (Anti-Odor Drainage Device) Originator
โข Holds KCL 98.4% Official Certified Odor Blockage Test Report
โข Officially granted 'Exclusive Worldwide Commercial Rights' to SEONG JIN
SEONG JIN (CEO Yeon-Sik Jung)
โข Holds Exclusive Worldwide Commercial, Sales, and Export Rights
โข Head of public procurement, municipal engineering sales, and supply contracts
โข Global video consulting (spoindo.com) & overseas licensing control tower
Seongji Co., Ltd. (CEO Sung-Heon Son)
โข Public Procurement Service Direct Production Certified Factory
โข Authentic POSCO STS 304 raw material processing, assembly, and QC
โข Public procurement MAS contract registration & field installation
Patent Registration (Mido Industry)
Patent No. 10-2329278 (SEONG JIN Exclusive)
Official Test Report 1 (KCL)
Korea Conformity Laboratories 98.4% Odor Block
Official Test Report 2 (KCL)
Certified Airtight Pressure & Drainage Integrity
Factory Registration (Seongji)
Direct Production Certification / MAS Registered
POSCO STS 304 Material Certification
1.2T Authentic Stainless Steel Mill Sheet
Public Procurement MAS Spec
Korean Public Procurement Standard Registered
Global Municipalities, Civil Engineering Contractors & Infrastructure Buyers
Contact SEONG JIN Global Business Division for specifications, CAD drawings, test samples, and containerized export pricing.