Industrial Liquid Filter Bags

To provide an accurate quotation, we need your bag size, collar/ring type, micron rating, media material, temperature, flow rate, and liquid type.

If replacing old bags, simple photos of the top ring, seam, and dimensions are often enough for us to identify 80%+ of the specifications.

Yes. By examining your sample, our engineers identify the media type, micron rating, seam construction, ring design, and surface finish.

We can then produce an equivalent or improved version that fits your existing filter housing.

Yes, we offer complete OEM/ODM services for liquid filtration, including:

• Custom bag sizes and shapes
• Custom micron ratings (1–1000 μm)
• Special fabrics (PTFE, monofilament, multilayer felt)
• Custom logo and packaging

Suitable for new filtration system development or upgrading existing equipment.

Yes, we provide free samples for standard PP/PE/mesh bags.

Customized bags can be produced within 2–4 days for fit and performance testing.

You can simply provide:

1. Photos of the ring/flange, seams, and dimensions
2. Liquid type (water, chemicals, oils, solvents, food-grade, etc.)
3. Micron rating or filtration objective

We will match the original specifications or improve the filtration performance.

Typical micron selection guidelines:

• 1–10 μm → fine polishing, RO pre-filtration, high-clarity liquids
• 10–50 μm → intermediate filtration
• 50–1000 μm → coarse filtration, protecting pumps & equipment

Final selection depends on particle size, viscosity, and required clarity.

We supply multiple materials to match your liquid chemistry and temperature:

• Polypropylene (PP) — water, chemicals, general industrial use
• Polyester (PE) — higher temperature resistance
• Nylon / Monofilament Mesh — precision classification & sieving
• PTFE — strong acids/alkalis, solvents, high temp
• Stainless Steel Mesh — reusable, extreme conditions

Liquid filter bags are available in different bottom shapes to suit various flow conditions, installation spaces, and filtration requirements. The three most common bottom styles include:

• Round Bottom – Best for general liquid filtration. Provides smooth flow transition and minimizes turbulence, helping reduce pressure drop.
• V Shape Bottom – Designed for applications requiring better sediment collection. Ideal for viscous liquids or systems where solids tend to settle.
• Flat Bottom – Suitable for high-flow systems or when a compact bag shape is needed. Commonly used in standard industrial housings.

Choosing the right bottom shape improves filtration efficiency, bag stability, and service life. If you're unsure which type fits your process, we can recommend the best option based on your operating conditions.

Liquid filter bags are sealed using two main methods: sewn or welded. Each method provides different advantages depending on your filtration needs, liquid type, and cleanliness requirements.

Sewn Filter Bags

• Industry-standard construction
• 5-needle lockstitch seam for strong mechanical durability
• Ideal for applications with high dirt holding capacity
• Cost-effective and suitable for most industrial liquids

Welded Filter Bags

• No needle holes → prevents liquid bypass
• No thread contamination risk
• Heat-bonded edges ensure precision and uniformity
• Maintains the same filtration efficiency as the media—ideal for high-purity filtration

Sewn bags are recommended for general industrial filtration and high-load applications. Welded bags are preferred for food & beverage, chemical, electronics, and any process that requires strict contamination control.

Liquid filter bags are available with two types of sealing rings: steel ring and plastic ring. Each provides different sealing performance, installation methods, and application suitability.

✔ Steel Ring Filter Bags

• Made from galvanized or stainless steel
• Sewn into the top of the bag for strong structural support
• Comes with a cotton handle for easy installation and removal
• Designed to provide both sealing and mechanical support inside the housing
• Ideal for high-temperature or heavy-duty industrial filtration

✔ Plastic Ring (Snap Ring / PP Collar) Filter Bags

• Molded plastic collar with built-in handle for fast installation
• Simply drop into housing and push down—no tools required
• Smooth plastic design reduces contamination buildup around the header
• Collar is sewn or welded to ensure strong attachment to the bag
• Ideal for food, beverage, chemical & high-cleanliness applications

Steel rings are preferred for rugged industrial use and high temperature conditions. Plastic rings provide superior sealing consistency, easier installation, and improved cleanliness control.

We offer full lifecycle support, including:

• Filter bag performance evaluation
• Operating cost optimization
• System troubleshooting & flow correction
• Scheduled filter bag replacement
• Housing leak inspection & sealing improvement