High Flow Filter for Cooling Tower Circulating Water Treatment

Product Introduction

The high flow filter for cooling tower is a high-throughput filtration unit specially developed for industrial cooling circulating water. It fits standard water filter housing, and often works in tandem with a self-cleaning filter and industrial water filter to form a staged filtration system. Our product range includes high flow filter cartridge as the core consumable inside this filter vessel. Available media types include pleated PP, glass fiber and composite depth media, covering micron grades from 5μm to 100μm to adapt to different turbidity levels of cooling tower water. Imported high flow filters from Pall and 3M have long been adopted in many large cooling systems, yet they have obvious pain points: expensive spare parts, long delivery lead time and limited support for on-site customized modification. Our LEFILTER high flow filter for cooling tower adopts large-area pleated structure and gradient-density filter media. It maintains low pressure drop under continuous high flow operation, holds large amounts of dirt, and delivers stable effluent quality. It is widely used in central air conditioning cooling loops, power plant cooling towers, chemical plant circulating water, steel mill cooling water and manufacturing workshop cooling systems.

Working Principle

Cooling tower water carries a large amount of impurities including sand, rust flakes, algae and bio-slime after cyclic exposure to the open air. Water enters the high flow filter housing and flows radially through the surface of the high flow filter cartridge. Large and medium-sized contaminants are captured on the outer pleated layer, while fine particles are trapped in the inner gradient media. Thanks to the expanded pleated area, a single high flow cartridge can handle huge water flow, which greatly reduces the total number of filter elements and simplifies the pipeline layout. When configured with a self-cleaning filter as the primary barrier, coarse debris is removed upfront, which protects the high flow filter cartridge from rapid clogging and extends the service cycle. Differential pressure is the key monitoring index. When the pressure difference before and after the filter housing rises to the preset value, the internal high flow filter cartridge needs to be replaced in time. Clean circulating water after filtration flows back to heat exchangers and chillers, avoiding blockage and heat transfer efficiency decline.

Main Types of High Flow Filter for Cooling Tower

1. PP Pleated High Flow Filter

This is the most common type for general cooling tower circulating water. Polypropylene media is thermally bonded without extra adhesive, with good chemical compatibility and low extractables. Common precision options: 5μm, 10μm, 20μm. It is suitable for HVAC, food factory and commercial building cooling water. Compared with equivalent imported high flow cartridges, our PP pleated filter features uniform fiber distribution and avoids early channeling caused by uneven pore size.

2. Glass Fiber High Flow Filter

Glass fiber media owns excellent dirt holding capacity and strong tolerance to high turbidity water. It is suitable for steel, mining and heavy industry cooling towers with high suspended solid content. It is not suitable for long-term operation under strong alkaline conditions.

3. Composite Depth High Flow Filter

Combined depth and surface filtration structure, designed for water with mixed particles and sticky bio-slime. It resists surface blinding and is a good choice for cooling towers with frequent algae outbreaks.

4. High Flow Filter with Anti-bacterial Media

With modified antibacterial fiber layer, it inhibits the growth of bacteria and algae on the filter surface, reducing the frequency of chemical dosing and system cleaning. It is widely used in data center cooling loops and pharmaceutical factory cooling water.

Technical Specifications

Core Advantages

1. Super high flow capacity: 

One high flow cartridge replaces dozens of conventional 40-inch cartridges, saving housing space and pipeline investment.

2. Low stable pressure drop: 

It will not bring extra heavy load to the circulating pump, helping save power consumption.

3. High dirt holding capacity: 

Longer service interval, less frequent shutdown for cartridge replacement.

4. Strong anti-fouling performance: 

Gradient media structure is not easy to be blocked by sticky slime and algae.

5. Wide interchangeability: 

Compatible with mainstream imported high flow filter cartridges, convenient for retrofitting existing cooling tower systems.

6. Fast supply cycle: 

LEFILTER keeps regular specifications in stock, solving the problem of long lead time of imported brands.

Application Scenarios

Central air conditioning and commercial building cooling tower circulating water

Power plant, chemical plant, steel mill industrial cooling water system

Data center precision air conditioner chilled water filtration

Food, beverage and pharmaceutical factory cooling loop

Injection molding, die casting and other manufacturing equipment cooling water

Closed-circuit chilled water and open cooling tower hybrid system

FAQ

Q1: Why do cooling tower systems need high flow filters? 

A: Open cooling towers absorb dust, spores and debris from the air. Without effective filtration, impurities will accumulate in heat exchangers, reduce heat transfer efficiency and accelerate pipeline corrosion.

Q2: What micron rating is normally selected for cooling tower high flow filters? 

A: 10μm is the most widely used standard specification. Choose 5μm for high-precision heat exchanger protection, and 20–50μm for heavily polluted raw water.

Q3: Can high flow filter work together with a self-cleaning filter? 

A: Yes. This two-stage scheme is very popular. The self-cleaning filter removes large debris first, and the high flow filter carries out fine polishing, greatly extending cartridge life.

Q4: When should I replace the high flow filter cartridge for cooling tower? 

A: Replace when differential pressure reaches 0.25–0.3 MPa. For stable water quality, scheduled periodic replacement is also acceptable.

Q5: Can your high flow filter cartridge replace Pall and 3M high flow elements directly? 

A: Cartridges with the same size and micron rating are interchangeable, with more competitive price and shorter delivery time.

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