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F42 Air Intake Filters and Filter Silencers

F42 Series
Air Intake Filters and Filter Silencers

Application
The F42 Air Intake Filter Silencer is recommended for use on the intakes of centrifugal compressors, fans, blowers, engines and turbines where dust-free process air requirements are highly critical and there is a need for additional silencing of the air intake system. When used on the inlets of compressors, engines and blowers, an appropriate silencer must be installed between the air moving device and the filter.

Design
The F42 Series employs a three-stage filtering system which consists of a Type F3 primary, a Type F4 intermediate and a Type F5 filter. The rigid housing is designed to accept 24˝ x 24˝ filter elements, wherein the final filter contains a fluid seal to prevent bypass. The internal design provides a safeguard to prevent small size foreign objects from entering the air intake passageway when filters are removed. To effectively reduce intake noise, a silencing device is designed into the filter housing air outlet nozzle. This silencer is designed so there is no increase in the housing pressure drop. The minimum efficiency of the final filter is not less than 99.97% (by DOP test method) on 0.3 microns and above. Field tests indicate final filters need to be changed once every 18 to 24 months if the primary and intermediate filters are properly serviced. Special designs are available upon request.

Construction
Welded sheet and plate steel construction. Metal joints are sealed to prevent dirt and air from bypassing the filter element. All surfaces are prime coated, followed with a final coat of machinery enamel. Flanges are drilled to match 125 lb. American Standard Flanges. Weatherhoods are included. Special finishes, or materials, are available at extra cost.

Part No.   Figure Total Filter Element (CFM) Outlet Nozzle Velocity (FPM) A Q C S Wt. No. of 24"x24" Filter Elements
F3 F4 F5
F42-81   1 2,500 7,198 8 24 33 5078 370 1 1 1
F42-101   1 2,500 4,565 10 24 33 5078 385 1 1 1
F42-121   1 2,500 3,183 12 24 33 5078 405 1 1 1
F42-122   2 5,000 6,365 12 24 33 81¾ 555 2 2 2
F42-142   2 5,000 4,940 14 24 33 81¾ 570 2 2 2
F42-162   2 5,000 3,755 16 24 33 81¾ 585 2 2 2
F42-184   3 10,000 5,900 18 48 33 81¾ 910 4 4 4
F42-204   3 10,000 4,760 20 48 33 81¾ 935 4 4 4
F42-244   3 10,000 3,280 24 48 33 93¾ 1065 4 4 4
F42-246   4 15,000 4,920 24 48 33 102¾ 1300 6 6 6
F42-306   4 15,000 3,135 30 48 33 102¾ 1370 6 6 6
F42-308   5 20,000 4,180 30 48 33 102¾ 1570 8 8 8
F42-308   5 20,000 2,920 36 48 33 102¾ 1695 8 8 8

 

 
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