Liquid Filter Bag Manufacturer in India

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. 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 inch diameter by 16 inch long, max 18 cubic metres per hour), Size #2 (7 by 32 inch, max 34 cubic metres per hour), Size #3 (4 by 8 inch, max 6 cubic metres per hour), and Size #4 (4 by 14 inch, max 12 cubic metres per hour). Additional sizes including 4x10, 4x20, 4x24 and 7x36 inch are available, and custom dimensions are produced on request.

Three options are available. The universal polypropylene (PP) collar suits most chemical and industrial applications and is rated to 80 C. The stainless steel 316 ring is for food-grade, pharmaceutical, high-pressure, or high-temperature applications up to 130 C. The zinc-coated steel ring is a cost-effective alternative to SS for applications that do not require food-grade certification. The collar must match your housing inlet ring specification.

Felt bags (PP and PE) are depth filtration media: particles are trapped within the fibre matrix through the thickness of the bag. They are available in finer ratings (1 to 200 micron), hold large quantities of solids, and are single-use. Nylon monofilament mesh bags are surface filtration media: particles are captured on the surface at a precisely defined mesh opening size (50 to 300 micron). Mesh bags hold less solids but can be washed and reused, making them more economical in lower-contamination applications.

Yes. ClaryFil NMO nylon monofilament mesh bags are designed for cleaning and reuse. They can be backwashed with clean water or rinsed with a compatible solvent, depending on the contaminant. The number of reuse cycles depends on the application; contact Gopani for guidance. PP and PE felt bags are single-use and should not be washed, as the fibre structure compresses and loses filtration efficiency.

PP (polypropylene) felt bags resist acids, alkalis, and many solvents across a broad pH range, up to a maximum of 80 C. PE (polyester) felt bags offer good chemical resistance with significantly higher temperature tolerance, up to 130 C when used with a steel ring collar. Choose PP for chemical aggressiveness; choose PE when temperature exceeds 80 C.

Yes. Gopani engineers custom ClaryFil bags to non-standard sizes, including 4x10, 4x20, 4x24, and 7x36 inch as listed in our catalog, as well as fully bespoke dimensions. Custom micron ratings and custom media combinations are also available. Minimum order quantities are kept low for trial orders. Send your housing dimensions and application details to sales@gopani.com.

Yes. Gopani is an established exporter with customers in the USA, UAE, Saudi Arabia, Qatar, Southeast Asia, and Africa. Our manufacturing and warehousing facility in Ahmedabad, Gujarat supports international orders with competitive lead times, and we work with established freight partners for DDP and CIF shipment options. For international enquiries, contact sales@gopani.com or call +91 706 901 8049.

Match the rating to the particle you need to stop and to what sits downstream. As a starting point from our catalogue: 1 to 5 micron ahead of RO membranes and in pharmaceutical water systems, 5 to 25 micron for chemical processing and paint, and 50 to 200 micron for bulk solids and general industrial water. We confirm the grade on your fluid and flow.

Singeing passes the felt surface briefly through a flame. It melts and smooths protruding fibres, which reduces fibre shedding and improves cake release, so the filtrate is cleaner than with unsinged media. ClaryFil PE bags use singed polyester felt; ClaryFil PP bags use glazed polypropylene felt for the same purpose.

PE bags resist most mineral acids at moderate concentration and many organic solvents, but they are less resistant than PP to strong caustics such as sodium hydroxide and to concentrated sulfuric acid. For those, specify PP felt below 80 C, or ask us for a compatibility check.

Yes. Send an existing bag or a dimensioned drawing and our engineers work out the media, weight, rating, dimensions, collar and construction, then produce a matched replacement for your approval before batch production.

Yes. Bags can be produced with your branding, part numbers and packaging, or as white-label product, for housing manufacturers and distributors.

Clary-T BF stainless steel housings take sizes #1 to #4. Polyfilt BF uPVC housings take sizes #1 and #2 with a PP collar. Buying bags and housings from one source removes sizing mismatches; ask for a complete system quote.