The One-Piece Molded Bag Filter is a high-performance, precision-engineered industrial liquid filtration system built for global manufacturing and processing applications, designed to solve the core pain points of traditional welded or spliced bag filters — including frequent leaks, weak structural integrity, and high maintenance costs. Unlike conventional filters that rely on welded joints or assembled casings, this unit features a fully seamless, single-mold housing crafted via advanced high-temperature injection molding or die-casting technology, with no gaps, welds, or weak points throughout the entire structure.
Engineered with optimized fluid flow (top-in/bottom-out or side-in/bottom-out) and paired with a heavy-duty internal support basket, it securely holds filter bags in place for uniform fluid distribution and consistent filtration performance, supporting both coarse and precision graded filtration for all types of liquid media. From standard non-corrosive fluids to high-temperature, acidic, alkaline, or high-viscosity liquids, this filter delivers reliable solid-liquid separation, impurity interception, and fluid purification. Its compact, space-saving design allows for flexible standalone use or parallel multi-unit setup for high-flow production demands, making it a cost-effective, long-lasting alternative to traditional bag filters and cartridge filters across industries.
Core Product Specifications At a Glance
Item | Details & Standard Specifications |
|---|
Housing Material | Food/Industrial Grade PP Polypropylene; 304 / 316L Stainless Steel |
Operating Temperature | PP Model: -20℃ ~ 80℃; Stainless Steel Model: -20℃ ~ 150℃ |
Filtration Rating | 0.5μm ~ 300μm (customizable for special precision requirements) |
Design Pressure | 0.1 ~ 0.6MPa (standard; customizable for high-pressure scenarios) |
Flow Configuration | Top Inlet & Bottom Outlet; Side Inlet & Bottom Outlet |
Connection Type | Threaded, Flange, Quick-fit (customizable per on-site pipeline) |
Configuration | Single Bag; Multi-Bag Parallel (for high-flow capacity) |
Sealing Material | Silicone, FKM/Viton (corrosion-resistant, high-temperature resistant) |
Key Technical Features
Seamless One-Piece Housing: Fully molded, joint-free construction eliminates all risk of liquid leakage, cross-contamination, and weld failure, offering exceptional sealing performance and stable pressure resistance for high-pressure and corrosive operating environments.
Premium Industry-Grade Materials: Available in two durable options to match diverse application needs — food/industrial-grade PP polypropylene (excellent resistance to strong acids, alkalis, and organic solvents) and 304/316L stainless steel (high temperature and pressure tolerance, fully compliant with hygienic industry standards).
Wide Filtration Precision Range: Compatible with custom-molded filter bags covering 0.5μm to 300μm precision, enabling flexible coarse filtration for large particles and fine filtration for micro-scale impurities. The high-open-area support basket maximizes effective filtration surface area, boosts dirt-holding capacity, and reduces clogging frequency.
Tool-Free Quick Maintenance Design: Equipped with a quick-release clamp or easy-open top cover, paired with corrosion-resistant silicone or FKM gaskets for a tight, reliable seal. Filter bag replacement and system cleaning take just minutes with no specialized tools, while the smooth, crevice-free inner wall prevents residue buildup and bacterial growth.
Heavy-Duty Durability: The one-piece molded structure delivers superior impact and deformation resistance, ensuring stable long-term operation even under heavy-duty, high-flow conditions. The reinforced support basket keeps filter bags securely positioned, extending overall service life and minimizing unplanned downtime.
Core Competitive Advantages
This one-piece molded bag filter stands out from traditional filtration equipment with tangible benefits that drive operational efficiency and cost savings for global users:
Zero Leakage, Consistent Filtration Quality: The fully seamless design eliminates media bypass and leakage entirely, maintaining stable filtration accuracy to protect product purity — critical for quality-sensitive industries like pharmaceuticals, food and beverage, and electronics, where even small impurities can cause product defects.
Lower Total Cost of Ownership: Quick, tool-free maintenance cuts labor costs and production downtime; most filter bags are cleanable and reusable to reduce consumable expenses. The rugged, damage-resistant structure also reduces the need for frequent full-unit replacements, delivering superior long-term value.
Unmatched Application Versatility: Fully customizable for material, filtration precision, flow rate, and connection types (flange, quick-fit, threaded), adapting seamlessly to normal, high-temperature, high-pressure, and corrosive liquid scenarios, from small-scale laboratory testing to large-scale industrial production lines.
Space-Saving & Easy Deployment: Compact footprint fits easily in limited workshop space, with flexible vertical or horizontal installation options and mobile unit compatibility. No complex civil engineering is required, allowing for fast on-site installation and rapid commissioning.
Global Regulatory Compliance: Meets strict international standards including FDA, EFSA (food hygiene), GMP (pharmaceuticals), and industrial environmental emission regulations, ensuring full compliance for cross-border operations and hygienic production requirements.
Key Application Industries
Widely used for liquid purification and solid-liquid separation across major global industrial sectors, this filter is trusted in critical processes including:
Water Treatment: Municipal wastewater purification, industrial circulating water treatment, pure water pretreatment, electroplating and printing & dyeing wastewater treatment
Chemical Manufacturing: Chemical raw material filtration, organic solvent refining, coatings, ink and adhesive impurity removal
Food & Beverage: Juice, wine, drinking water, syrup and edible oil filtration, ensuring product taste and hygiene compliance
Pharmaceutical & Biotechnology: Pharmaceutical liquid purification, biological agent filtration, bottle washing water treatment (GMP compliant)
Petroleum & Energy: Oilfield produced water filtration, lubricating oil purification, diesel and gasoline impurity removal
Electronics & Coating: Electroplating solution filtration, electrophoretic paint purification, ultrapure water preparation
Frequently Asked Questions (FAQ)
Q1: How do I select the right one-piece molded bag filter for my specific application?
A1: Selection is based on three core factors: first, liquid properties — choose PP for corrosive acids/alkalines and 304/316L stainless steel for high-temperature or hygienic applications; second, flow rate and processing capacity — select single-bag or multi-bag parallel units based on your daily/hourly production needs; third, filtration precision — match 0.5μm–300μm filter bags to your impurity particle size. We offer free customized selection support for global customers.
Q2: How often should I replace the filter bag?
A2: The replacement cycle depends on liquid impurity content and operating hours. For standard conditions, filter bags can be replaced or cleaned every 3–6 months. For high-impurity applications, monitor the inlet-outlet pressure difference — replace or clean the bag once pressure reaches 0.1–0.15MPa to maintain optimal filtration efficiency.
Q3: Can this filter handle high-temperature and highly corrosive liquids?
A3: Yes, with tailored configurations. The PP model operates stably at -20℃ to 80℃ for corrosive solvent and acid/alkali environments; the 316L stainless steel model withstands -20℃ to 150℃ for high-temperature hygienic liquids. We can customize materials and seals to match your exact medium conditions.
Q4: Is professional installation or maintenance required?
A4: No professional expertise is needed. The filter comes with standardized connectors, and installation only requires pipeline connection and secure placement. Routine maintenance is limited to regular bag replacement or cleaning, which can be performed by general on-site operators with basic training.
Q5: Do you offer custom solutions for unique flow or precision requirements?
A5: Absolutely. We provide full customization including flow capacity (single to multi-bag parallel systems), filtration precision, connection types, unit dimensions, and additional accessories (pressure gauges, quick-release kits) to meet your unique process and installation needs.
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