PB Prefilter Housing

    •    Accepts 2", 4" or 6" ASHRAE grade prefilters to extend the life of Absolute® or HEGA filters
    •    PB Series 212 allows the installation of a 2" prefilter and a 12" secondary filter


Typical applications: Single or two-stage filter housing designed for mating with Absolute® or HEGA bag-in/bag-out housings. Housing includes a bagging flange for use with a containment bag to facilitate safe filter change by service personnel.
Construction: 14-gauge and 11-gauge T304 and 316 stainless steel.
Filters: 2", 4" or 6" prefilters, or a 2" prefilter and a 12" deep secondary filter of ASHRAE grade efficiency.
Additional data: Information shown herein for quick reference purposes only. Application specific data is required by the factory before model selection can be accomplished.

Consult factory or Product Sheet 3403 for more information.



Camfil Farr’s PB Pre-filter Housings:
    •    Are manufactured of the same materials as prime containment components.
    •    Are continuously welded at all pressure barrier joints.
    •    Are reinforced to be capable of withstanding up to 15” w.g. positive or negative pressure.
    •    Have hardware constructed of 300 Series stainless steel. The door knobs are cast aluminium to prevent galling of male stainless steel threads (according to DOE HDBK-1169-2003, 6.2.2)
    •    Include a bagging ring to facilitate a safe-change procedure to protect filter change-out personnel.
    •    Have doors that include a silicone gasket for a positive seal during system operation.
All Camfil Farr PB Pre-filter Housings are manufactured to industry-standard recommended practices and evaluation criteria as are the prime containment components.
The PB Series 200 will accept 2”, 4” or 6” deep ASHRAE grade pre-filters. The PB Series 212 will allow installation of a 2” deep pre-filter and a 12” deep secondary filter.
Custom designs are also available to meet any individual containment requirement.{jd_file file==96}