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Stainless Steel Moisture Separator / Demister

HVAC Filters - Type AFI Tech Sheet

• All Stainless steel construction
• 98% efficient
• Corrosion Resistant
• Also functions as a particulate filter
• For side-access housings and built up banks

General- the washable type AFI moisture separator is built with corrosion resistant materials and serves two important functions, its primary function is to collect water droplets and oil mist from an air stream and divert the liquid to an appropriate drain. It also functions as a washable, low efficiency particulate filter. Type AFI is designed for use in outside air ducts; side access housings and built up filter banks.

Construction-The type AFI filter uses a 22-guage stainless steel frame to enclose the filter media. The corners are mitered, and the frame is secured with pop rivet(s) 3/8” diameter drain holes are punched on the bottom of the frame and a label describing proper position for drainage and airflow is affixed at the top of the frame.

The media consists of multiple layers of corrugated and flat stainless steel screen wired assembled with the screen corrugation positioned vertically for efficient drainage, placed between two expanded stainless steel grids. The media is made to fit firmly inside the frame giving the type AFI moisture separator its exceptional strength and durability. The 2’ is 15-ply.

Three standard nominal size filters are available in a thickness on 2”(1-3/4 actual), and they are 5/8” undercuts on the height and width dimensions.

Special size filters made to exact height and width dimensions as specified are available in a nominal thickness of 2”(1-3/4 actual).

Options- ¾’ Wide neoprene gaskets are installed on the filter when used in a side-access housing to prevent liquid bypass. Specify Type AFI when ordering on request.

Performance- The recommended operating range for the type AFI is between 450 to 550 fpm face velocity. At this range, the filter is 98% efficient with liquid droplets of 20 micrometers. The moisture separator also functions, as a low efficiency particulate filter causing an increase in pressure drop as the filter becomes dirty. Allow 0.5” W.C. static pressure for fan selection calculation.

Installation Considerations- Install the type AFI in an outside air duct or in the primary filter stage upstream from particulate filters. It may also be installed in built-up banks made of holding frames with drain pans installed on each horizontal row, or in side-access housings equipped with drain tubes. Specify type AFIG in this application.

Filter Changes- Rinse with a moderate-to-heavy stream of warm water. High-powered steam cleaning or chemical dips are unnecessary and not recommenced.

Notes

• Tolerances: Height and width –1/16” Thickness- 1/32”
• Recommended final resistance is 0.5” W.G.

Specifications- General 1.0 - 1.1 Washable filter shall be type AFI moisture separator supplied by AFI. Construction 2.0 2.1 Frame shall be 22-gauge stainless steel with mitered corners and secured pop rivet(s). 2.2 Frame shall have 3/8” diameter drain holes punched on the bottom. 2.3 Frame shall have a label describing proper position for drainage and airflow. 2.4 Filter media shall be multiple layers of corrugated and flat stainless steel screen wire, assembled with the screen corrugation positions vertically for efficient drainage, placed between two expanded stainless steel grids.

Part #	Nominal Hxwxd	Actual HxWxD	Carton Quantity	Carton Weight (lbs)
AFI201224	12" x 24" x 2"	11-3/8" x 23-3/8" x 1-3/4"	6	54
AFI202412	24" x 12" x 2"	23-3/8" x 11-3/8" x 1-3/4"	6	54
AFI202424	24" x 24" x 2"	23-3/8" x 23-3/8" x 1-3/4"	6	90
AFIG201224	12" x 24" x 2"	11-3/8" x 23-3/8" x 1-3/4"	6	54
AFIG202412	24" x 12" x 2"	23-3/8" x 11-3/8" x 1-3/4"	6	54
AFIG202424	24" x 24" x 2"	23-3/8" x 23-3/8" x 1-3/4"	6	90