What Is a Wedge Wire Water Distributor
It is a tank internal component used for the uniform distribution and collection of fluids in pressure vessels. It is constructed from V-shaped stainless steel profile wires resistance-welded to support rods, forming a rigid structure with continuous, uniform slots. The distributor typically consists of a central hub or header pipe with multiple lateral arms radiating outward-commonly referred to as "octopus" or "fishbone" style configurations. The lateral arms are covered with wedge wire screen, which allows fluid to pass through while preventing media migration. The assembly is designed to be installed at the top or bottom of a filter vessel, ion exchange column, or reactor, where it ensures even flow distribution across the entire cross-section of the vessel.


Uniform Flow Distribution and Anti-Clogging Design
The wedge wire water distributor ensures that process fluid is evenly distributed across the media bed. This uniform distribution prevents channeling and short-circuiting-common problems that reduce filtration efficiency and media utilization. The V-shaped slot geometry is critical to this performance. The slots are narrow at the outside and wider internally, which prevents particles from becoming wedged and blocking the flow. The distributor maintains consistent flow characteristics over time with minimal maintenance. The slot opening typically ranges from 0.2 mm to 2.0 mm, providing effective media retention while maintaining good flow capacity. The high open area of the wedge wire design ensures low pressure drop across the distributor, which reduces pumping energy requirements.
Construction and Material Options
The water distributor is manufactured from materials selected based on the fluid being processed and the operating conditions. Standard materials include stainless steel 304, 316, and 316L. For more demanding environments with corrosive media or elevated temperatures, we offer 2205 duplex stainless steel and other corrosion-resistant alloys. The distributor can be configured in various layouts to match the vessel design: radial (spoke) type, cross type, or hub-and-lateral type. The hub or header pipe diameter typically ranges from DN50 to DN300, with lateral branch pipes ranging from 32 mm to 133 mm in diameter. Connections between the hub and laterals can be threaded or flanged, and the overall distributor diameter is custom-sized to match the vessel-typically from 500 mm to 3000 mm or larger.

Applications Across Water Treatment and Industrial Processes
Wedge wire water distributors are used in a range of filtration and ion exchange applications. In water treatment plants, they serve as upper and lower distributors in quartz sand filters, activated carbon filters, and multi-media filters. In ion exchange systems, they are used as中间 drainage devices in cation and anion exchangers, softeners, and demineralization systems. They are also found in industrial filtration systems for chemical processing, petrochemical refining, and food and beverage production. In each application, the distributor ensures that the full cross-section of the media bed is utilized, maximizing filtration capacity and extending media life.
Custom Manufacturing and Quality Assurance
Anping County Yan Zhao Mining Sieve Mesh Co., Ltd. has been manufacturing wedge wire water distributors for over 20 years. Our facility operates more than 60 production units under the ISO9001:2008 quality management system. Each distributor is custom manufactured to customer specifications. We support OEM/ODM services and can produce to technical drawings. For custom distributors, we confirm material grade, slot opening, hub diameter, lateral configuration, connection type, and overall dimensions before production. A sample can be provided for confirmation before mass production. Lead time typically ranges from 7 to 30 days. We perform a 100% final inspection before packing. For export, distributors are sprayed with anti-rust oil, wrapped with foam padding, and packed in fumigation-free plywood cases.
Product Specifications
|
Parameter |
Description |
|
Material |
304, 316L stainless steel; 2205 duplex on request |
|
Slot Opening |
0.2–2.0 mm (customizable) |
|
Hub Diameter |
DN50–DN300 (custom) |
|
Lateral Diameter |
32–133 mm (custom) |
|
Overall Distributor Diameter |
500–3000 mm (custom) |
|
Configuration |
Radial, cross, or hub-and-lateral types |
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