Top-Entry Bag Filter

Our top-entry bag filter (also known as top-loading bag filter) is a high-efficiency industrial filtration equipment specially designed for solid-liquid separation in

This filter is manufactured in strict accordance with international industrial standards (ASME, FDA sanitary grade optional), with a sturdy main body made of high-quality carbon steel, 304 stainless steel or 316L stainless steel, supporting a full range of filter bag specifications and precision options. It can effectively remove suspended solids, impurities, particles and contaminants from liquid materials, protect downstream pumps, valves, heat exchangers, precision filters and other key equipment, reduce equipment wear and blockage, and ensure the stable operation of the entire production process. It is suitable for both general industrial filtration and hygienic-grade, corrosion-resistant special working conditions, with strong versatility and adaptability.

Core Technical Parameters (Standard Models)

Note: Customized models, special pressure/temperature resistance, and sanitary-grade configurations are available upon customer request, fully meeting personalized industrial filtration needs.

Technical Features

Top-Entry Quick-Opening Structure: The top-mounted hinged or clamp-type cover design is the core highlight of this product. There is no need to disassemble the inlet and outlet pipelines when replacing filter bags, and the entire operation can be completed from the top of the filter, which greatly shortens the operation time and reduces the labor intensity of on-site maintenance personnel, especially suitable for working conditions requiring frequent filter bag replacement.

No Dead-Layer Filtration Design: The internal flow channel of the filter housing is optimally designed, with smooth inner walls and no dead corners for liquid accumulation or impurity residue. This design avoids secondary pollution of liquid materials, ensures full contact between liquid and filter bags, and maximizes the dirt-holding capacity and filtration efficiency of each filter bag.

Excellent Sealing Performance: Adopts precision-machined sealing grooves and high-quality EPDM/PTFE sealing gaskets, with zero side leakage during operation. It completely avoids the problem of unfiltered liquid bypassing the filter bag and entering the downstream system, ensuring the stability and uniformity of filtration effects, and meeting the strict filtration requirements of high-standard industrial processes.

Wide Compatibility of Filter Bags: Compatible with standard polypropylene (PP), polyester (PE), PTFE, nylon mesh and other filter bags of global general specifications, covering a full range of filtration precision from 0.5μm to 200μm. Customers can freely match filter bags according to material properties, impurity types and filtration accuracy requirements, with strong flexibility.

Corrosion-Resistant & Durable Body: The main body is made of high-quality metal materials with polished or pickled surface treatment, which has excellent resistance to acid, alkali, oxidation and corrosion. It can adapt to harsh working conditions such as chemical liquids, oily materials, and high-temperature media, with long service life and low replacement cost of wearing parts.

Flexible Installation & Modular Design: Equipped with adjustable support legs, it can adapt to different installation sites and pipeline heights; modular structure design supports single-unit independent use or multi-unit parallel connection to meet larger flow filtration needs, and can be easily integrated into existing production lines without major pipeline transformation.

Core Product Advantages

Ultra-Low Operation & Maintenance Cost: Compared with precision filter equipment and side-entry bag filters, this product has a simple structure, low initial investment, and extremely low daily maintenance cost. Filter bag replacement is fast and simple, no professional technicians are required, and downtime caused by maintenance is greatly reduced, saving labor and production loss costs for enterprises.

High Flow & High Dirt-Holding Capacity: Optimized housing size and filter bag layout enable the product to handle large-flow liquid filtration while having a larger dirt-holding space. It can run stably for a long time under high impurity load, reducing the frequency of filter bag replacement and improving overall production efficiency.

Wide Working Condition Adaptability: Supports normal temperature, high temperature, low temperature, corrosive, hygienic and other special working conditions, and can be used for both liquid pre-filtration and final filtration of some non-high-precision materials. It breaks the limitation of single working condition of traditional filters and realizes multi-scenario universal use.

Compliant with International Industrial Standards: The production and processing comply with ASME, FDA (food and pharmaceutical grade optional) and other international certification standards, with stable performance and reliable quality. It is suitable for global industrial customers and can pass the factory and equipment certification of various countries and regions.

Environmentally Friendly & Easy to Clean: The smooth inner wall and no dead-layer design make the filter easy to clean and flush after use, reducing material residue. The used filter bags are easy to dispose of, meeting the environmental protection requirements of industrial production in various countries.

Application Fields

This top-entry bag filter is widely used in global industrial filtration scenarios, covering almost all industries requiring solid-liquid separation, with core application fields including:

Water Treatment Industry: Municipal tap water pretreatment, industrial circulating water filtration, sewage wastewater purification, groundwater and river water impurity removal, reverse osmosis (RO) system pre-filtration, effectively removing sediment, suspended solids and large particles in water.

Chemical & Petrochemical Industry: Filtration of chemical solvents, oils, lubricants, coatings, inks, adhesives, resin materials, removing impurities and unreacted solid particles, ensuring the purity of chemical products and protecting downstream reaction equipment.

Food & Beverage Industry: Filtration of fruit juice, beer, wine, edible oil, dairy products, drinking water and other hygienic-grade materials (FDA-grade configuration optional), meeting food safety standards and removing impurities and sediment in raw materials.

Pharmaceutical Industry: Filtration of pharmaceutical intermediates, oral liquid, injection water, cosmetic raw materials, ensuring the purity and hygiene of raw materials, complying with pharmaceutical production GMP standards.

Electroplating & Surface Treatment Industry: Filtration of electroplating solution, pickling solution, passivation solution, removing metal impurities and solid particles, prolonging the service life of electroplating solution and improving the quality of surface treatment of workpieces.

Other Industrial Fields: Mining slurry filtration, textile printing and dyeing wastewater treatment, paint and pigment filtration, marine engineering water treatment, and various industrial process liquid purification scenarios requiring efficient and convenient filtration.

Frequently Asked Questions (FAQ)

What is the core difference between top-entry and side-entry bag filters?

The biggest difference lies in operation and maintenance: top-entry bag filters allow filter bag replacement directly from the top without disassembling pipelines, with faster operation and lower labor cost; side-entry bag filters require pipeline disassembly for filter bag replacement, which is more suitable for working conditions with low maintenance frequency. Top-entry models are more cost-effective for scenarios needing frequent bag changes and high-flow operations.

How to choose the right filtration precision and model for my working condition?

First, confirm the particle size of impurities you need to remove (select filtration precision accordingly: coarse filtration 50-200μm, fine filtration 0.5-50μm); then calculate the hourly liquid flow rate to match the corresponding model (refer to our core parameter table). If you are unsure, you can provide your liquid properties, flow rate and impurity type, and our technical team will recommend the optimal solution for free.

How often should the filter bag be replaced, and is the replacement process difficult?

The replacement cycle depends on the impurity load in the liquid: generally 1-4 weeks for high-impurity working conditions, and 1-3 months for low-impurity working conditions. The replacement process is extremely simple: just open the top cover, take out the old filter bag, put in a new one, and lock the cover, no professional tools or technical personnel are needed, and the whole process takes only 5-10 minutes.

Can this filter adapt to strongly corrosive liquid filtration?

Yes. We can customize the filter body with 316L stainless steel, PTFE lining or other anti-corrosion materials, and match PTFE filter bags and sealing gaskets, which can adapt to strongly acidic, strongly alkaline and other corrosive liquid filtration scenarios. Just inform us of the specific liquid composition and concentration, and we will configure the corresponding corrosion-resistant scheme.

Bag Filter