What Is a Self-Cleaning Filter?
A Self-Cleaning Filter is a filtration device designed to automatically remove suspended solids and debris from liquid streams without manual cleaning. Unlike conventional filters, which require disassembly for maintenance, self-cleaning filters perform backwash or cleaning cycles automatically, ensuring continuous operation and reducing downtime.
The filter typically consists of a stainless steel body (SUS304 or SUS316L) and a screen or mesh element. When particles accumulate, the differential pressure across the filter triggers an automatic cleaning process, which can include mechanical brushes, rotating discs, high-pressure water jets, or air scouring.
Self-cleaning filters are used in industries such as power plants, chemical processing, wastewater treatment, municipal water supply, HVAC systems, and food & beverage processing. They help maintain process efficiency, protect downstream equipment, and reduce operational costs, making them a reliable choice for continuous filtration applications.
China has become a leading manufacturing hub for Self‑Cleaning Filters used in industrial water treatment, chemical processing, HVAC systems, municipal effluent pre‑filtration, and food & beverage processing. Selecting a supplier requires evaluating measurable factors such as filter mechanism, material, backwash system, flow capacity, customization, and quality control procedures.
Self‑Cleaning Filters are designed to remove suspended solids automatically without manual cleaning. These systems typically integrate automatic backwash triggered by differential pressure, timers, or flow sensors, reducing downtime and maintenance costs in continuous process operations.
List of 10 Self‑Cleaning Filter Manufacturers In China(In No Particular Order)
Hangzhou Hanzhikang Purification Equipment
Hangzhou Hanzhikang Purification Equipment Co., Ltd. specializes in Self‑Cleaning Filters, automatic backwash filters, wedge wire strainers, and industrial filtration systems for fluid processing. Its products feature:
Mechanical brush backwash
High-pressure water or air scouring
PLC or differential pressure control
Filter bodies are made from SUS304 and SUS316L stainless steel. Filter media include wedge wire screens, perforated plates, or precision mesh with micron ratings from 10µm to 5000µm. Flow rates range from 1 m³/h to 5000 m³/h, supporting ANSI, DIN, and JIS flange standards. Coating options are available for corrosive fluids.
Applications include industrial water intake, cooling towers, chemical feed streams, boiler water protection, municipal raw water, and food & beverage process water. The company provides engineering consultation, filter sizing, site installation guidance, and after‑sales service.
Customization includes:
Inlet/outlet configurations
Flow capacity adjustment
Backwash control integration
OEM/ODM design support
Hangzhou Hanzhikang provides centralized sourcing, combining design, manufacturing, decoration, packaging, and logistics for distributors, OEMs, and private-label clients.
Jiangsu Fith
Jiangsu Fith Equipment Co., Ltd. manufactures Self‑Cleaning Filters for continuous filtration of industrial fluids. Its filters include brush and scraper backwash systems. Filter bodies are SUS304 and SUS316L stainless steel. Micron ratings are 20µm–2000µm. Applications include cooling water in power plants, chemical process streams, textile wastewater, and food & beverage process water.
Zhejiang Qad
Zhejiang Qad Filtration Technology Co., Ltd. produces industrial Self‑Cleaning Filters with PLC-controlled backwash and multi-stage filtration. Materials are stainless steel with welded wedge wire screens. Typical applications are agricultural irrigation, chemical plant cooling loops, food processing water, and HVAC system feed water.
Shanghai Clfw
Shanghai Clfw Filtration Co., Ltd. provides Self‑Cleaning Filters with PLC or differential pressure controlled backwash. Filter bodies are SUS304, SUS316L, or Hastelloy C276. Applications include pharmaceutical water systems, beverage bottling, industrial effluent pre-filtration, and cooling water protection.
Wenzhou Filk
Wenzhou Filk Filtration Equipment Co., Ltd. supplies Self‑Cleaning Filters with brush or high velocity flow backwash. Standard materials are SS304/SS316L. Flow capacities up to 4000 m³/h. Applications include seawater intake pre-filtration, cooling towers, pulp & paper process water, and wastewater recycle streams.
Nanjing Puli
Nanjing Puli manufactures filters with rotating disc cleaning, high-pressure air scouring, and PLC control. Stainless steel bodies and removable screens support micron ratings from 10µm to 1500µm. Used in chemical processing, textile rinse water, food processing, and cooling loop protection.
Guangzhou AT
Guangzhou AT produces automatic Self‑Cleaning Filters for industrial and municipal applications. Materials include SS304/SS316L with abrasion-resistant screens. Common applications: municipal raw water, brewery process lines, food & beverage wash water, and textile wastewater filtration.
Kunshan EvPu
Kunshan EvPu manufactures brush-driven and scraper-type backwash filters. Materials: stainless steel SS304/SS316L. Used in aquaculture water, cooling loops, industrial effluent, and chemical process filtration. OEM/ODM support is available.
Tianjin EFlt
Tianjin EFlt provides Self‑Cleaning Filters with timer or differential pressure backwash. Construction: stainless steel SS304/SS316L. Industries: petrochemical feed water, cooling loops, food processing, and industrial water reuse.
Shandong ClFl
Shandong ClFl produces automatic backwash filters with brush cleaning, hydraulics, and PLC controls. Materials: SS304/SS316L or duplex stainless steel. Flow capacities 50–5000 m³/h. Applications: power plant cooling water, textile wastewater, industrial process water, and municipal raw water systems.
Why Self‑Cleaning Filters Remain Essential
Self‑Cleaning Filters reduce downtime and maintenance in continuous fluid systems by automatically removing suspended solids. Common applications:
Cooling tower water circulation
Industrial effluent stream pre‑filtration
Municipal raw water intake
Chemical process feed streams
Food & beverage line protection
Textile rinse water treatment
When selecting a supplier, buyers should verify:
Material composition and corrosion resistance
Micron rating suitability
Backwash mechanism and triggers
Flow capacity and piping standards
Quality control procedures and production capacity
FAQ
Q: What materials are common for Self‑Cleaning Filters?
A: SS304, SS316L, and duplex stainless steel depending on fluid corrosivity.
Q: What backwash mechanisms are available?
A: Mechanical brush, high-pressure jets, air scouring, rotating discs, and differential pressure triggers.
Q: How do Self‑Cleaning Filters reduce maintenance?
A: Automatic backwash cycles remove particulates without manual disassembly.
Q: Can filters be customized for site-specific requirements?
A: Yes, including flow rates, micron specifications, flange standards, and control system integration.