Bag Filter and Bag Filter Housings from Industrial Water Equipment Ltd

Micron Size

Filter Bag Material

Fibre

Available Micron Ratings

1

5

10

25

50

100

150

200

250

300

400

500

800

1000

Felt

Polyester

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Polypropylene

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Monofilament mesh

Nylon

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Multifilament mesh

Polyester

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Media and Compatibility

Bag filters are available in three media formats, of which polypropylene felt is suitable for the majority of applications. Polyester felt should be selected where solvent compatibility and high temperature are required. For coarser filtration, mesh, which is washable and reusable, is offered from 5 - 1000 micron.

Available to special order are double-layer polyester and polypropylene extended life, nylon multi-filament, FDA, Teflon and oil removal media.

Felt -Felt filter bag materials are made form synthetic fibres in polypropylene or polyester. The proper combination of fibre diameter , weight and thickness results in an economical depth-type filter media. Polypropylene and polyester bags are supplied with a glazed finish to reduce fibre migration. These bags have a nominal micron rating.

Monoflament mesh -is offered in nylon and is woven material. Each thread is a single filament. The openings are square. They have excellent strength and are considered to be cleanable. Filter efficiency is 90% or more.

Multifilament mesh -Multifilament mesh materials are offered in polyester and are woven form threads made from small fibres twisted together. Bags made of this material are low cost and considered to be disposable. They have lower efficiencies than the monofilament mesh, about 80% vs 90%.

Bag filtration compatibilities

Fibre	Compatibility
	Weak Acids	Strong Acids	Weak Alkali	Strong Alkali	Solvents	Temperature ºC Max
polypropylene	Excellent	Excellent	Excellent	Excellent	Fair	95
polyester	Very Good	Good	Good	Poor	Good	150
nylon	Fair	Poor	Excellent	Excellent	Good	160