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Bag Housings

Bag filter housings are available in a wide range of configurations and materials. Bag filters are ideal for high flow filtration applications. They are often used for coarse filtration but they are capable of filtering down to 1 micron. A size #2 bag is the standard size for high flow, multi round housings. There are several parameters that must be taken into account but as a guideline, a single #2 bag housing is typically good for flow rates of 100 GPM.


FilterSource can help you select the right system based on your specific needs. We offer a wide range of filter bag housings in stock that are available for immediate shipment. Current inventory includes single bag housings all the way up to 12 round bag housings. Housings can also be custom built to your precise needs.


For information, availability, engineering drawings, or to purchase: please contact us at 1-800-701-8038 or email

Bag housing
Bag housing
Ordering Guide

Bag Size - #1, #2, #3, #4, #5, #12, 410, 420, X1


Number of Bags - 1-24


Materials of Construction - Carbon Steel, 304 Stainless Steel, 316 Stainless Steel, 304L Stainless Steel, 316L Stainless Steel, Aluminum, Hastelloy, Polypropylene


Closure - Clamp, Swing Bolt


Gasket - Buna N, EPDM, Silicone, Neoprene, Teflon Encapsulated Silicone, EPR, Viton, Teflon Encapsulated Viton, Buna White FDA


PSI - 100, 150, 200, 300, 500


Basket - Perforated, Mesh, Standard


Connections - NPT, Flanged, Sanitary Ferrules; 1"-24"


Options - ASME Code Stamped, NSF 61, 134 epoxy coating for seawater and corrosive applications, specialty finishes


Testing Available - PMI, radiography and many others upon request

Multi bag housing
Duplex bag housing
Single bag housing

Single Bag

Multi Bag


Skid Systems


Bag filter housings have an internal perforated mesh basket that provides support for the filter media (bag). Unfiltered liquid enters the housing above the filter bag and liquid fills the interior of the housing. Liquid flows thru the filter bag from the inside out. Particles are trapped while the processed liquid moves out of the filtration system. O-Rings are used to create a positive seal between the lid, basket and housing. Multi bag systems function the same way. Systems are typically designed with a clean differential pressure of around 1 PSID. It is recommend to change out the filter bag when the system reaches a differential pressure of 15-20 PSID. 

How Bag Filtration Works
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