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Help CenterPLC-Controlled Prefiltration Unit for 24/7 Operation With 0.3mm Gap and 0.6MPa Design
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Welcome to Anping County Boli Hardware Wiremesh Products Factory, a trusted manufacturer since 1998 with annual export value exceeding US$5 million. Our PLC-Controlled Prefiltration Unit for 24/7 Operation with 0.3mm Gap and 0.6MPa Design is engineered to deliver continuous, reliable solid-liquid separation in demanding industrial environments. Combining advanced automation with robust construction, this unit ensures minimal downtime, precise filtration, and long service life—ideal for water treatment, petrochemical, and food processing applications.
The core of this system is its programmable logic controller (PLC), which automatically manages backwash cycles based on pressure differential, timer, or manual override. This eliminates the need for constant operator supervision, reduces labor costs, and maintains consistent filtration efficiency. The 0.3mm gap design captures fine particles while allowing high flow rates, and the 0.6MPa pressure rating guarantees reliable performance under moderate to high-pressure conditions.
Key features and benefits include:
- 24/7 Autonomous Operation – PLC-controlled backwash system enables unattended filtration around the clock, significantly reducing maintenance interruptions.
- High-Precision Filtration – 0.3mm wedge wire or perforated screen ensures consistent removal of suspended solids, protecting downstream equipment.
- Durable Construction – Made from stainless steel (304 or 316) with corrosion-resistant coating, suitable for harsh media and outdoor installation.
- Low Pressure Loss – Optimized fluid dynamics minimize head loss during normal filtration, saving energy and pump wear.
- Easy Integration – Flanged connections (standard) and customizable inlet/outlet sizes allow seamless retrofit into existing pipelines.
- Cost-Effective – Automatic self-cleaning reduces media replacement and disposal costs compared to traditional cartridge filters.
Technical specifications are summarized in the table below:
| Parameter | Value |
|---|---|
| Filtration Gap | 0.3 mm |
| Max Design Pressure | 0.6 MPa (6 bar) |
| Operating Temperature | Up to 80°C (higher optional) |
| Control Mode | PLC with HMI (differential pressure, timer, manual) |
| Screen Material | Stainless steel 304/316L |
| Housing Material | Carbon steel with epoxy coating or stainless steel |
| Connection Size | DN50 to DN300 (customizable) |
| Backwash Valve | Pneumatic or electric (optional) |
The unit is designed for continuous operation in water treatment plants, cooling systems, agricultural irrigation, and industrial process water. Its self-cleaning mechanism uses only a small amount of filtered water during backwash, preserving overall system efficiency. The PLC can be integrated with SCADA or remote monitoring systems for advanced control.
Why choose our prefiltration unit? With over 25 years of manufacturing experience, Anping Boli has supplied filtration solutions to markets across North America, Europe, Southeast Asia, and Oceania. Our annual export value of US$5–10 million reflects the global trust in our products. We ship from multiple ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery. Every unit undergoes rigorous pressure testing and quality inspection before shipment. We offer customization in screen gap, material, and control options to meet your specific requirements.
Contact us today for a quote or technical consultation. Our team is ready to help you select the right prefiltration unit for your 24/7 operation. We provide OEM/ODM services and welcome your drawings or samples.
Frequently Asked Questions
- What is the recommended backwash frequency? The backwash frequency depends on the water quality and flow rate. The PLC can be set to initiate backwash based on differential pressure (typically 0.05–0.08 MPa) or a fixed timer (e.g., every 2–8 hours). We can program the controller to optimize for your specific conditions.
- Can this unit handle high-temperature liquids? The standard design is rated for liquids up to 80°C. For higher temperatures (up to 120°C), we can supply special seals and materials upon request.
- What is the lifespan of the filter screen? With proper maintenance and normal water quality, the stainless steel screen can last 5–10 years. Abrasive particles or aggressive chemicals may reduce lifespan; we recommend periodic inspection.
- Is the PLC compatible with Modbus or other communication protocols? Yes, the PLC can be equipped with RS485, Modbus RTU, or Ethernet modules for remote monitoring and control. Please specify your requirements when ordering.
- What is the minimum flow rate required for proper self-cleaning? The unit requires a minimum flow of approximately 20% of the nominal flow to ensure effective backwash. For lower flow conditions, we can design a recirculation system.
- Do you provide installation and commissioning support? We offer detailed manuals and remote technical support. For large projects, on-site commissioning is available at an additional cost.
- How does the 0.3mm gap compare to mesh filters? The 0.3mm gap is equivalent to approximately 50 mesh. It removes particles larger than 0.3mm, ideal for pre-filtration before finer membranes or sand filters.
- Can the unit be used for wastewater with high suspended solids? Yes, but the backwash frequency may increase. We recommend a pre-screen or strainer for very heavy solids loads. Our engineers can advise based on your water analysis.
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