Flat-inlet Double Grate Catch Basin
Overview
Flat-inlet double-grate storm drains represent an advanced solution for surface water management in modern infrastructure projects. These systems combine two parallel grates within a single frame to optimize water intake while minimizing debris entry. Originally developed for high-traffic urban areas, their application has expanded to industrial zones and smart city developments. The dual-grate configuration serves multiple purposes: the primary grate captures large debris while the secondary finer grate prevents smaller particles from entering the drainage network. This design significantly reduces maintenance frequency compared to single-grate models, making them cost-effective for municipal authorities and contractors.
Structure and Working Principle
The standard unit comprises a cast iron or composite frame embedded in concrete, housing two removable grates with distinct aperture sizes. The primary grate typically features 30-40mm openings, while the secondary grate has 10-15mm slots. This staged filtration system allows rapid water intake during heavy rainfall while protecting downstream pipes. Hydraulic efficiency is achieved through the flat inlet design that sits flush with road surfaces, creating minimal flow resistance. Modern versions often incorporate sediment traps or vortex chambers to further enhance separation of solids from stormwater. The frame's structural integrity is engineered to withstand both vertical loads from traffic and horizontal forces during flood events.
Key Features
Durability stands out as the most critical feature, with high-grade cast iron models offering 25+ years service life. Anti-corrosion treatments like epoxy coating or zinc spraying are standard for metal variants, while polymer composites provide inherent rust resistance. The dual-grate system typically increases flow capacity by 15-25% compared to single-grate equivalents. Safety features include anti-slip grate patterns (meeting DIN 19580 or EN124 standards) and optional locking mechanisms to prevent unauthorized access. Many manufacturers now offer smart drainage versions with integrated sensors for real-time monitoring of water levels and debris accumulation, particularly valuable for flood prediction systems.
Application Areas
These drainage units are predominantly installed in six key environments: urban road networks (especially at intersections), highway shoulders, airport tarmacs, industrial parking lots, commercial complex peripheries, and flood-prone urban districts. Their effectiveness in each setting depends on proper hydraulic calculations and site-specific adaptations. In transportation infrastructure, they're specified for their ability to handle both pedestrian and vehicular loads (typically Class D400 or higher). For greenfield developments, engineers often combine them with permeable pavement systems to create integrated sustainable urban drainage solutions (SUDS). Specialized versions with grease interceptors are used in food service zones.
Maintenance and Precautions
Routine maintenance involves quarterly inspections and debris removal, with frequency increasing to monthly in autumn or areas with heavy tree coverage. Pressure washing should avoid displacing seals between grates and frames. Never use acidic cleaners on metal components as they degrade protective coatings. Installation requires precise leveling to prevent ponding - a minimum 2-3% gradient toward the drain is ideal. During winter, avoid mechanical ice removal that could damage grate surfaces. For coastal installations, specify stainless steel hardware (minimum 316 grade) to resist salt corrosion. Always verify that replacement grates match the original manufacturer's specifications to maintain load ratings.
B2B Procurement Guide
Professional buyers should prioritize three technical documents: EN124 certification for load-bearing capacity, hydraulic performance test reports, and material composition certificates. Bulk purchases (50+ units) typically attract 8-15% discounts, with lead times varying from 4-12 weeks depending on customization requirements. Key negotiation points include warranty terms (minimum 10 years for structural components), availability of spare parts, and compatibility with existing drainage networks. Consider modular systems that allow future upgrades to smart drainage capabilities. For international projects, verify that designs meet both local regulations and international standards like ASTM C923 for polymer composites.
Related Manufacturers
- 主营：成品检查井、大口径成品井、混凝土检查井、市政管网成品井、道路排水水泥井
- 主营：预制泵站、提升泵站、污水泵站、分流井、雨水泵站、截流井泵站、一体化雨水、柔性截流井、截流井、雨污分流井、污水分流、一体化智能、一体化污水、一体化供水、一体式泵站、一体化预制、一体化智慧、一体化泵站、一体化泵房、玻璃钢泵站、灌溉泵房、农田灌溉泵站、智慧加压泵站
- 主营：污衣槽、布草筒、污衣筒、衣物井、污衣井、布草井、草井污衣、布草输送井、工作服、脏污布草、宿舍布草、防火设计、布草回收、酒店污衣、衣物回收、污衣污被、布巾滑道、宿舍衣物、宾馆污衣、医院布草、酒店布草、收集系统、控制系统、布草通道、健身房衣物
- 主营：一体化泵站、预制储水泵、污水提升设备、自动化智能截流井、一体化预制泵站
- 主营：玻璃钢泵站、HMPP一体化泵站、玻璃钢一体化泵站、地埋式雨水截流井、玻璃钢储罐、玻璃钢罐
- 主营：一体化预制泵站、一体化智慧泵房、一体化污水处理设备、雨水井、一体化负压站、潜污泵、轴流泵、变频供水设备、智慧泵房、轴流泵站
- 主营：冷却塔填料、玻璃钢拉挤型材、拉挤型材、地埋截流截污井、玻璃钢电缆桥架、电缆桥架、玻璃钢冷却塔
- 主营：路沿石、电缆线槽、水泥盖板、检查井、预制排水沟、水泥沟盖板、水泥电线杆、预制流水槽、水泥排水沟、非预应力电线杆
- 主营：一体化泵站、一体化预制泵站、一体化污水提升泵站、一体化雨水提升泵站、玻璃钢一体化泵站、智能一体化泵站
- 主营：一体化泵站、玻璃钢泵站、一体化污水提升泵站、雨水提升泵站、一体化雨水泵站、雨水排涝泵站、一体化截流井、一体化雨水提升泵站、雨水预制泵站、雨水废水提升泵站、雨水预制提升泵站、预制污水雨水泵站、智能一体化泵站、污水提升泵站、HMPP一体化泵站、地埋式泵站、一体化预制泵站、一体化污水泵站、玻璃钢一体化泵站、污水预制泵站、智能污水提升泵站、地埋式一体化泵站、一体化轴流泵站、排涝提升泵站、农村污水提升泵站
- 主营：电力井厂家、隔油池、拼装化粪池、混凝土化粪池
- 主营：光伏闸门、液压堰门、取水泵站、平板闸、柔性井、智能截污井、雨污截流井、雨水分流井、截流装置、灌溉泵房、提升泵站、提升设备、预制泵站、污水泵站、智慧泵房、集成供水、取水泵船、截流堰门、污水截流闸、柔性气囊阀、智能截污闸、玻璃钢泵站、移动式泵房、一体式闸门、不锈钢堰门
- 主营：一体化泵站、一体化泵闸、液压堰门、一体化截流井、一体化供水泵站、排涝泵站、智能防倒灌器、调蓄池设备、粉碎性格栅机、闸门、污水提升器、污水处理
- 主营：一体化泵站、玻璃钢脱硫塔、一体化污水提升泵站、一体化雨水提升泵站、玻璃钢脱销塔、玻璃钢脱硫设备厂家、生物除臭箱、生物滤池、生物除臭设备、玻璃钢拱形盖板、玻璃钢盖板、玻璃钢管道、玻璃钢夹砂管道、玻璃钢通风管道、大口径玻璃钢管道
- 主营：雨水收集、溢流井、渗透井、环保雨水口、井盖、排水沟、塑料管道
- 主营：水泥管、透水砖、排水管、检查井、涵管、钢筋混凝土管、电力电缆盖板、水沟盖板、路缘石
- 主营：水泥盖板、水泥沟盖板、混凝土盖板、雨水篦子、水泥井盖、检查井模块、预制检查井、雨水口、收水口井室、路灯手孔井、水泥篦子、预制混凝土盖板、排水沟盖板、集水坑盖板、电缆沟盖板、水泥化粪池
- 主营：种植箱、污水池、树桩石、检查井、雨水井、电缆井、路沿石、仿木桩、生态框、葡萄架、化粪池、预制护栏、景观护栏、雕花护栏、围栏护栏、隔断栏杆、河道栏杆、河道护栏、防护护栏、木纹护栏、仿木花架、石头栏杆、水泥花箱、水泥护栏、水泥柱子
- 主营：预制电力排管、混凝土盖板、预制护坡生态框、预制检查井、预制电力检查井、预制排水检查井、混凝土电力检查井、混凝土雨污水检查井、混凝土检查井、预制装配式检查井、路沿石、步道砖、六角砖、隔离墩、预制排水箱涵、混凝土箱涵、预制箱涵、预制综合管廊、箱涵、预制箱变基础、水泥盖板、预制排水沟、预制混凝土电缆沟
- 主营：种植箱、仿木桩、隔离带、沉沙井、检查井、电缆井、雨水口、雨水井、仿树桩、景观箱、污水池、护坡框、路沿石、树桩石、连排桩、生态框、沉淀池、挡土桩、化粪池、景观花盆、电缆阀门、仿藤栏杆、池塘护栏、篦子盖板、艺术栏杆
- 主营：水泥仿木花箱、水泥化粪池、水泥仿木树桩石、水泥检查井、水泥单篦雨水井、水泥雨水井、水泥仿木护栏、水泥河道桩、水泥U型槽、水泥仿石护栏、生态框、水泥小栅栏
- 主营：景观护栏、灯光护栏、河道护栏、球墨铸铁井盖、铸铁井盖、雨水井盖、市政井盖、圆形井盖、方形井盖、污水井盖、重型井盖、电力井盖、井盖、防撞护栏、道路护栏、隧道盖板、电缆沟盖板、桥梁防撞护栏
- 主营：排水管、排污管、水泥管桩、水泥检查井、混凝土管、三级砼管、市政下水道
- 主营：排水沟、玻璃钢、混凝土、收水井、检查井、弱电井、水泥井、雨水井、电缆井、预制井、水泥雨水、检查进、蓄水池、收集池、化粪池、土地开挖、水泥检出、预制盖板、电力盖板、水泥构件、定制水泥、制品成品、制作水泥、水泥道路、盖板水泥
- 主营：水泥井室、化粪池、水泥消防池
- 主营：钢模具、路沿石、地坪模具、检查井模具厂家、塑料模具、护栏模具、电缆槽模具、光伏基础模具、连锁护坡模具、六角护坡模具
- 主营：检查井、电力井、模块式检查井、污水井、成品检查井、预制检查井、混凝土检查井、水泥检查井、雨水井、市政检查井、矩型井、排水沟槽、模块砖、方型模块砖
- 主营：圆形井盖、球墨铸铁井盖、雨水口雨水篦子、球墨铸铁篦子、铸铁水沟盖板、球墨铸铁棒
- 主营：集水坑盖板、水泥路沿石、水泥排水沟、电力电缆观察井、铸铁井盖、检查井模块砖、混凝土检查井、排水沟盖板、预制路沿石、混凝土u型槽、单孔排水篦子、太阳能路灯墩、路灯基础底座、混凝土排水沟槽、混凝土制品、水泥预制构件、水泥盖板、水泥流水槽、预制排水沟、路沿石、混凝土模块、光伏墩、路灯基础、水泥隔离墩
- 主营：检查井、保护套管、排污管
- 主营：水泥盖板、生态框、护坡砖、检查井模块、预制井、植草砖
- 主营：水泥管、路牙石、面包砖、井壁模块砖、水泥井盖、护坡砖、水泥盖板、排水管、人行道板砖、电力盖板、预制盖板、道板砖
- 主营：管廊模具、基础模板、基础模具、检查井模具、模具定制、隔离墩模具、水泥房模具、化粪池模具、风力发电基础
- 主营：滤水管、十字桩尖、光伏螺旋地桩、球墨铸铁井盖、锥形桩尖、开口桩尖、螺旋桥式滤水管、圆孔滤水管、方形桩尖、大棚螺旋地桩、地螺丝、钢管螺旋地桩
- 主营：排水沟盖板、预制排水沟、水泥电缆槽、检查井盖板、水泥井盖、铸铁井盖、检查井模块砖、预制检查井、单双篦雨水井、电力手孔井、穿线井、矩形排水槽、农田灌溉排水渠、水泥流水槽、水泥盖板、混凝土制品、水泥预制件、水泥路灯基础、混凝土盖板、集水坑盖板、路沿石、混凝土模块、光伏墩、化粪池、水泥路沿石
- 主营：灌浆料、压浆料、丙乳砂浆、自流平砂浆、自流平、自流平水泥、水泥自流平、聚合物改性水泥砂浆、加固修补砂浆、道路修补料、混凝土色差修复剂、轨道胶泥、环氧树脂稀胶泥、环氧腻子、高延性混凝土、粘钢胶、道钉锚固剂、高强耐磨料、环氧修补砂浆、环氧界面剂、混凝土界面剂