Filter Bags Manufacturer in India

As an ISO 9001:2015 certified filter bag manufacturer in India since 1993, Gopani produces the ClaryFil™ range of industrial liquid filter bags for applications across chemicals, food and beverage, oil and gas, textiles, desalination, pharmaceuticals, and more. Our bags are engineered at our Ahmedabad, Gujarat facility using premium media from world-leading textile mills – and exported to 500+ industries across 30+ countries including the USA, UAE, Saudi Arabia, and Europe.

This page is your complete reference for ClaryFil™ filter bag types, how to select the right bag for your application, and why Gopani is the preferred source for industrial liquid filtration in India and globally.

ClaryFil™ Filter Bag Types – At a Glance

Gopani manufactures five ClaryFil™ filter bag variants, each engineered for a distinct set of process conditions. Choose based on your fluid chemistry, operating temperature, required micron rating, and bag size.

Bag Type Filter Media Micron Range Max Temp. Best For Learn More
ClaryFil™ PP Polypropylene Felt 1 – 200 µm 80°C (PP collar) Chemicals, water treatment, general aqueous process streams PP Filter Bags →
ClaryFil™ PE Polyester Felt 1 – 200 µm 130°C (SS ring) High-temp fluids, resins, inks, paints, solvents PE Filter Bags →
ClaryFil™ NMO Nylon Monofilament Mesh 50 – 300 µm 130°C Food & beverage, pharma, surface filtration, cleanable/reusable bags NMO Filter Bags →
ClaryFil™ Oil Adsorbing Oleophilic Polypropylene 10 – 50 µm (particle) + oil adsorption 80°C Oily wastewater, condensates, oil-water separation, refinery streams Oil Adsorbing Bags →
ClaryFil™ Custom Any media; bespoke sizing & collar As specified As specified Non-standard housings, multi-bag systems, OEM requirements Custom Filter Bags →

How to Select the Right Filter Bag for Your Application

Five parameters determine the correct ClaryFil™ bag for your process. Work through each in order – get them all right and your bag will perform at rated capacity for its full service life.

1. Micron Rating – Depth vs. Surface Filtration

ClaryFil™ PP and PE felt bags use depth filtration – particles are captured throughout the media thickness, giving a high dirt-holding capacity. Typical micron ratings: 1, 5, 10, 25, 50, 100, 200 µm. ClaryFil™ NMO monofilament uses surface filtration – particles are retained on the outside of the mesh and can be rinsed off, making these bags cleanable and reusable. Typical ratings: 50, 75, 100, 150, 200, 250, 300 µm.

2. Chemical Compatibility – Match Media to Your Process Fluid

Polypropylene resists acids, alkalis, and most aqueous solutions – making ClaryFil™ PP the default for general chemical and water treatment duties. Polyester handles hot solvents and mildly acidic environments – making ClaryFil™ PE the choice for inks, paints, resins, and elevated-temperature process liquids. Nylon mesh resists a broad range of solvents and is food-contact approved – making ClaryFil™ NMO the standard for food, beverage, and pharmaceutical streams.

3. Operating Temperature – PP Collar vs. SS Ring

ClaryFil™ bags fitted with a polypropylene collar are rated to 80°C. ClaryFil™ PE and NMO bags fitted with a stainless steel 316 ring are rated to 130°C. For process temperatures between 80°C and 130°C, specify a PE or NMO bag with an SS ring.

4. Bag Size – Match to Your Housing and Flow Rate

ClaryFil™ bags are manufactured in four standard sizes, matching the global standard for bag filter housings:

Size Dimensions (Dia × Length) Max Flow Rate Typical Housing
#1 7″ × 16″ (178 × 406 mm) 18 m³/hr Single-bag housings, small to mid-flow
#2 7″ × 32″ (178 × 813 mm) 34 m³/hr Standard single-bag housing, most common size
#3 4″ × 8″ (102 × 203 mm) 6 m³/hr Compact/mini housings, lab and pilot-scale
#4 4″ × 14″ (102 × 356 mm) 12 m³/hr Mid-size compact housing, skid-mounted systems

For non-standard sizes (#5, #6, #2X, #7) or multi-bag housings, see our Custom Filter Bags page.

5. Construction – Welded Seam vs. Stitched, Collar Material

All ClaryFil™ PP and PE felt bags use fully welded construction – no stitching, no fibre migration, no bypass leakage. This is critical in food, pharmaceutical, and precision-coating applications. Collar options: polypropylene (standard, to 80°C) or stainless steel 316 (sanitary and high-temperature, to 130°C).

ClaryFil™ Filter Bags – Industry Applications

Our filter bags serve over 500 industries across 30+ countries. The table below shows the recommended ClaryFil™ media type and typical micron range for the most common industrial applications.

Industry / Application Common Process Fluid Recommended Media Typical Micron Key Requirement
Automotive Pretreatment baths, e-coat, parts cleaning fluids, lubricants, metalworking fluids PP Felt, PE Felt 5–100 µm Oil-compatible media, particle retention, extended bag life
Chemical Acids, alkalis, solvents, emulsions, aqueous process fluids PP Felt 1–200 µm Chemical resistance, welded seam (no contamination)
Food & Beverage Wine, beer, spirits, edible oils, corn syrup, starch, milk, soft drinks PP Felt, PE Felt 5–100 µm FDA-grade media, heat-sealed seams, no fibre migration
Metal Working Hydraulic oil, metalworking fluids, drawing compounds, precious metal recovery PP Felt, PE Felt 5–200 µm Particle retention, oil-compatible, extended service life
Paint & Lacquer Paint coagulates, solvents, varnishes, monomer purification PP Felt, NMO Monofilament 25–200 µm Removal of agglomerates, surface filtration for easy cleaning
Petrochemicals Lube oils, fuel additives, amine solutions, glycol fluids, injection fluids Oil Adsorbing, PP Felt 5–50 µm High-temp stability, chemical resistance, hydrocarbon absorption
Pharmaceutical Active ingredients, hormones, vitamin extracts, saline solutions, gelatin PP Felt 0.5–25 µm Extractable-free, welded seam, traceable batch
Resins, Plastics, Inks & Coatings Polymer dispersions, printing ink, polymerization batches, paper coatings NMO Monofilament, PE Felt 25–200 µm Surface filtration, cleanable/reusable bags
Water Treatment Well water, seawater, cooling tower water, ion exchange resin recovery NMO Monofilament, PP Felt 5–100 µm Cleanable/reusable (NMO), scale resistance, high flow rate

Not sure which bag suits your process? Contact our filtration engineers – we will specify the right ClaryFil™ product at no charge.

Why Choose ClaryFil™ Filter Bags from Gopani?

With 30+ years as a filter bag manufacturer in India and an active export footprint across 30+ countries, Gopani brings engineering depth that off-the-shelf catalogue suppliers cannot match.

What We Offer What It Means for You
ISO 9001:2015 Certified Manufacturing Every ClaryFil™ bag is produced under a documented quality management system – traceable, auditable, consistent batch to batch.
Premium Filter Media We source media exclusively from world-leading textile mills – not commodity rolls. Consistent GSM, pore structure, and fibre integrity guaranteed.
Fully Welded-Seam Construction No stitching, no loose fibres. Ultrasonic-welded seams eliminate fibre migration – critical for pharma, food, and precision applications.
5 Bag Types × 4 Sizes × Custom Options PP, PE, NMO, Oil Adsorbing, and Custom bags in Size #1 through #4 – plus bespoke sizing, collar material, and micron rating on request.
Fast Dispatch & Low MOQ Ready stock for all standard ClaryFil™ SKUs. Pilot-scale quantities available. No waiting weeks for a small order.
Application Engineering Support Our team reviews your process parameters – fluid type, temperature, flow rate, housing model – and recommends the exact bag spec before you order.
Export-Ready Packaging All bags are individually sealed in polybags and packed in cartons with batch labelling – ready for shipping to USA, UAE, Saudi Arabia, Europe, and beyond.

Bag Filters vs Cartridge Filters — Which Do You Need?

One of the most common questions from first-time buyers is whether to use bag filters or cartridge filters. The answer depends on your flow rate, dirt load, micron requirement, and housing investment. Here is a head-to-head comparison to help you decide.

Parameter Bag Filters Cartridge Filters
Filtration Type Depth (felt) or surface (mesh) Depth (meltblown/wound) or surface (pleated)
Micron Range 1–300 µm (felt: 1–200; NMO: 50–300) 0.5–150 µm depending on type
Flow Rate per Element Up to 34 m³/hr (Size #2 bag) Up to 4.8 m³/hr (40” cartridge)
Dirt Holding Capacity High — larger media area Moderate to high — varies by type
Reusability NMO mesh bags: yes. Felt bags: single use Generally single use (except sintered metal)
Cost per Changeout Lower — bags are less expensive Higher per element — but finer filtration
Housing Cost Lower — simpler design Higher — multi-cartridge housings
Best For High-flow, high-dirt, coarse to medium filtration Fine filtration, tight micron control, RO pre-treatment
Gopani Product ClaryFil™ PP, PE, NMO bag filters Clarywound, RO Protect, Clarypleat cartridge filters

Not sure which is right for your application? Contact Gopani’s filtration engineers for a free recommendation based on your process parameters. We supply both bag filters and cartridge filters — so our advice is unbiased.

ISO 9001:2015 Certified  |  30+ Years in Filtration  |  500+ Industries Served  |  Exported to 30+ Countries

Bag Filters

Bag Filter Manufacturer in India — ClaryFil™ Industrial Bag Filters Gopani manufactures ClaryFil™ industrial bag filters for pr...

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Industries We Serve!

Why Choose Gopani For Filter Bags?

Who we are

  • India’s leading filter bag manufacturer with ISO 9001:2015 certified production in Ahmedabad, Gujarat
  • 5 ClaryFil™ bag variants: PP felt, PE felt, NMO mesh, Oil Adsorbing, and Custom bags
  • 30+ years of filtration expertise since 1993 — serving 500+ industries across 30+ countries
  • Premium filter media sourced from world-leading textile mills for consistent GSM and pore structure
  • Fully welded-seam construction — zero bypass, zero fibre migration

What we do

  • Manufacture ClaryFil™ bags in all standard sizes (#1 through #4) with PP collar or SS 316 ring options
  • Maintain ready-stock inventory for fast dispatch within India and international export
  • Supply complete bag filter systems: ClaryFil™ bags + Clary-T BF / Plastofilt BF / Polyfilt BF housings
  • Provide free application engineering: fluid chemistry, micron selection, housing sizing
  • Export with full documentation: material test certificates, ISO certification, DDP/CIF shipping
  • Produce custom bags: non-standard sizes, specialty media, bespoke collar materials, low MOQ

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FAQs

What is a liquid filter bag and how does it work?
A liquid filter bag is a permeable textile bag installed inside a bag filter housing. Process liquid is pumped into the housing and forced through the bag, which captures suspended particles either within the bag fibres (depth filtration — felt bags) or on the bag surface (surface filtration — nylon mesh bags). Clean filtered liquid exits through the housing outlet. Filter bags are the most economical choice for high-flow, high-contamination liquid filtration.
ClaryFil™ PP and PE felt bags are available in 9 standard ratings: 1, 3, 5, 10, 25, 50, 75, 100, and 200 micron (µm). ClaryFil™ NMO nylon mesh bags are available in 7 standard ratings: 50, 75, 100, 150, 200, 250, and 300 micron. Additional ratings can be manufactured on request. Contact Gopani for application-specific guidance on selecting the correct micron rating.
ClaryFil™ PP felt bags and any bag with the universal polypropylene collar are rated to a maximum of 80°C. ClaryFil™ PE (polyester) felt bags and Nylon NMO mesh bags used with a stainless steel 316 or zinc-coated steel ring collar are rated to a maximum of 130°C. Never exceed the rated temperature — doing so will damage the bag and may compromise filtration integrity.
ClaryFil™ bags are produced in four standard industry sizes: Size #1 (7” diameter × 16” long, max 18 m³/hr), Size #2 (7” × 32”, max 34 m³/hr), Size #3 (4” × 8”, max 6 m³/hr), and Size #4 (4” × 14”, max 12 m³/hr). Additional sizes including 4”×10”, 4”×20”, 4”×24” and 7”×36” are available. Custom dimensions are also produced on request.
All ClaryFil™ filter bags are available with three collar options: Universal polypropylene (PP) collar (rated to 80°C, fits most standard housings), Stainless steel 316 ring (rated to 130°C, required for high-temperature and sanitary applications), and Zinc-coated steel ring (economy option for moderate temperatures). The collar must match your housing flange for a proper seal.
Felt bags (ClaryFil™ PP and PE) use depth filtration — particles are captured throughout the media thickness, giving high dirt-holding capacity. They are single-use and available from 1 to 200 µm. Nylon mesh bags (ClaryFil™ NMO) use surface filtration — particles are retained on the outside of the woven mesh. NMO bags can be cleaned and reused multiple times, available from 50 to 300 µm. Choose felt for fine filtration and high dirt loads; choose NMO for reusability and surface filtration.
ClaryFil™ NMO nylon monofilament mesh bags are cleanable and reusable — the woven mesh can be backwashed or ultrasonically cleaned to restore flow. PP and PE felt bags are designed for single-use service. While felt bags can sometimes be partially cleaned, Gopani recommends single-use operation to maintain consistent filtration efficiency and avoid cross-contamination between batches.
Yes. Gopani is a complete bag filter system supplier. Our Clary-T BF (stainless steel 304/316) housings, Plastofilt BF (polypropylene) housings, and Polyfilt BF (uPVC) housings are all designed to accept ClaryFil™ bags in sizes #1 through #4. Procuring bags and housings from a single source eliminates sizing mismatches and simplifies maintenance. Contact our team for a complete system quote.
For most acid, alkali, and aqueous chemical streams, ClaryFil™ PP (polypropylene felt) is the recommended choice due to its broad chemical resistance. For hot solvents, resins, and elevated-temperature chemical processes, ClaryFil™ PE (polyester felt) with a stainless steel ring collar handles up to 130°C. For oily wastewater and hydrocarbon-contaminated streams, use ClaryFil™ Oil Adsorbing bags. Contact Gopani’s filtration engineers with your specific fluid chemistry for a recommendation.
Yes. Gopani exports ClaryFil™ filter bags and complete bag filter systems to the USA, UAE, Saudi Arabia, Qatar, Southeast Asia, Africa, and Europe. We provide full export documentation, material test certificates, and ISO 9001:2015 quality certification. All bags are individually sealed in polybags and packed in cartons with batch labelling, ready for international shipping. Contact sales@gopani.com for export enquiries.