Bag Filters & Filter Bags for Reliable Liquid Filtration

Monarch Industrial Products offers one of the most extensive ranges of Bag Filters and Filter Bags available in Australia and the Asia Pacific. With over 20 years of experience in industrial liquid filtration, we supply systems that are durable, chemical-resistant, and easy to maintain.

Our bag filter housings are engineered in a wide range of materials including Polypropylene (PP), Glass-Filled Polypropylene (GFPP), PVC, CPVC, and Stainless Steel. Combined with filter bags in multiple micron ratings, these systems provide cost-effective, high-performance filtration for countless industries.

Bag Filters and Filter Bags for Liquid Filtration | Monarch Industrial Products

Why Choose Monarch Industrial Products?

Over 25 years’ experience in industrial filtration.
Local stock & support in Brisbane and Asia Pacific.
Custom fabrication available for special housings and skid systems.
Trusted supplier to chemical, water treatment, and manufacturing industries.
End-to-end solutions including housings, filter bags, strainers, and custom elements.
Our team is supported by our Local, well equipped general engineering workshop in here Brisbane.

Section: Why Choose Bag Filters?

Bag filters are one of the most economical and versatile methods of liquid filtration. They are:

Adaptable – suitable for nearly all liquids and viscosities
Economical – low capital and operating costs
Low Maintenance – quick filter bag changeouts reduce downtime
Durable – long filter bag life when sized correctly
Scalable – available as single-bag (simplex) or multi-bag housings for high-volume flow

Bag Filter Housings

Sizes: Industry standard Size 01, 02, 03, and 04 housings
Configurations: Simplex, Duplex, Skid, and Multi-Bag housings
Materials: PP, GFPP, PVC, CPVC, 304SS, 316SS
Connections: Threaded, flanged, socket, or fusion ends
Pressure Rating: Up to 150 psi (10 bar) depending on material
Flow Rates: From small process lines to high-volume systems

Filter Bags

Micron Ratings: From 1 micron to 1200 micron
Materials: Polyester, polypropylene, nylon, PTFE, and specialty media
Seal Options: Plastic ring, steel ring, and sewn-in designs
Efficiency: Nominal and absolute rated filter bags available

Bag Filtration Products Categories Links

Single Bag Housings

Monarch Single Bag Filters for Liquid Filtration

Multi Bag Housings

Monarch Multi Bag Filters for High Flow Liquid Filtration

Non-Metallic Bag Housings

Monarch Non-Metallic Bag Filters for Chemical Liquid Filtration

Filter Bag Media

Monarch Comprehensive Range of Filter Bags for Liquid

Flow Rate Considerations

We offer four Industry Standard sizes of bag filter housings - Size 01, 02, 03 and 04.

A Bag Filter System is a highly adaptable to virtually any liquid and viscosity. The liquid flows through the inside to the outside of the bag trapping the particles. Bag Filter Vessels are available in Single or Multi Bag units. Multi Bag units offer large surface area and high flow rates. The filter bags have a comparable long life and require little maintenance when sized correctly.

Monarch Bag Filter Vessels are capable of following the flow rates. The rates are based on filtering water which has a viscosity of 1 c.p through a Nominal Rated Filter Bag. When your application requires the fitting of High Efficiency media, please consult our sales staff for a sizing recommendations.

Filter Bag Sizes - Flow rates are based on using a Nominal rated filter bag.

Size	Flow rate	Dimensions	Flow Area
01#	20,000 (lt per hour) @ 1 c.p. (water)	Ø178mm x 420mm	0.24 m²
02#	40,000 (lt per hour) @ 1 c.p. (water)	Ø178mm x 810mm	0.48 m²
03#	6,000 (lt per hour) @ 1 c.p. (water)	Ø102mm x 230mm	0.08 m²
04#	12,000 (lt per hour) @ 1 c.p. (water)	Ø102mm x 410mm	0.16 m²

Multi-bag housings offer user friendly, cost effective bag filtration for high volume applications.

Flow rate capability example:

4 bag housing is rated at 160,000 lt per hour @ 1 c.p. nominal rated bag (4 x 02 Size bags @ 40,000 lt per hour)
6 bag housing is rated at 240,000 lt per hour @ 1 c.p. nominal rated bag (6 x 02 Size bags @ 40,000 lt per hour)

Filter Removal Efficiency

Nominal vs High Particle Removal Efficiency
Our range of filter bags can categorised into Nominal or High Efficiency Particle Removal.

Nominal Ratings
Nominal filter ratings are an arbitrary (nominal) value, indicating a particulate size range at which the filter removes some percentage. Nominal ratings vary from manufacturer to manufacturer and cannot be used to compare filters among manufacturers. Processing or application conditions such as operating pressure, concentration of contaminant and particle type have a significant effect on the retention efficiency of the nominally-rated filters.

Absolute Ratings and High Removal Efficiency
Absolute filter ratings are a value associated with a filter, that represents the size of the smallest particle completely retained. Complete retention is within the experimental uncertainty of a standard test method consistent with the intended filter use. Among the test conditions that must be specified are particle size, challenge pressure, concentration, and detection method used to identify the contaminant.

General Condsiderations

What is the viscosity of the product to be ﬁltered?

Viscosity is the resistance of a fluid to the motion of its molecules among themselves. Water, ether, and alcohol have low viscosities; heavy oil, glycerine, and syrup have high viscosities. Viscosity affects resistance directly. If all other conditions remain constant, doubling the viscosity in a filter system results in twice the original resistance to flow. Consequently, as viscosity increases, the pressure required to maintain the same flow rate increases. Centipoise is the unit of measurement comparing the viscosity of a fluid with that of water, which has a viscosity of 1 c.p.

Temperature

The temperature at which filtration will occur can affect both the viscosity of the fluid, the corrosion rate of the filter or housing, and the filter medium compatibility. Viscous fluids generally become less viscous as temperature increases. If a fluid is too viscous, it may be advisable to preheat the fluid and to use a jacketed housing or an electrical heat jacket on the housing. Temperature also has an impact on the selection of ﬁlter media and the O-ring seals.

Solids Loading

For example: In an application with a low flow rate and a high solid loading it may be preferable to oversize the unit providing a greater surface area and dirt holding capacity. The increased surface area provides reduced pressure resulting in increased filter life.

Are the solids crystalline or gelatinous?

Crystalline solids can form a permeable layer on the ﬁlter media and gelatinous solids can form an impermeable layer that will cause blinding off of the ﬁlter media.