Filter Sales Group Contact: 201-419-6111 | sales@nciweb.com


Universal Silencer Series FRH  Filter and Series FCRH  Filter Silencer
For use on Centrifugal Compressors, Blowers, Engines, Gas Turbines. (For reciprocating compressors, contact factory for recommendations.)
Universal FRH Filters and FCRH Filter Silencers are similar in scope and application to the FS and FSH Series with the fundamental distinction that the FR and FRH Series are specifically designed as two-stage filters, with the second stage consisting of one battery of (12) cartridge type filters for each 20" x 25" x 2" panel type primary filter. The high efficiency type P-5 cartridge filters are equipped with threaded ends which are screwed into individual receptacles, such that as each P-5 is removed and replaced, only a small area (1.5 sq. in.) is exposed to the flow of unfiltered air, permitting change­out of filters while the system is in operation. Usually, a moderate-efficiency filter panel is used as the first stage element. The FCRH Series features an integral silencing section to provide a moderate degree of noise attenuation - otherwise, the FRH and FCRH are identical. All units are fabricated of steel sheet and plate, welded throughout to provide a rugged, long-lasting, trouble-free air filtering component. All models are equipped with removable weather hoods, pressure tap, and flanges drilled to match 125/150 LB. ANSI specifications. Inside and outside surfaces are primed and given a finish coat of enamel paint.
Noise Attenuation - FRH Series
Octave Band Cent. Freq. - Hz 63 125 250 500 1000 2000 4000 8000
Atenuation - dB 2 3 4 5 8 13 14 13
Model   Nominal Capacity             Weight (2.) No. & Size of Filter No. Final
Filter Filter Silencer Configuration C. F. M.(1.) A B C D E F FRH FCRH Openings Filters
FRH-8-25 FCRH-8-25 Fig. A 1750 8     40 70-1/2 3-1/2 310 360 2-20x25x2 24
FRH-10-25 FCRH-10-25 Fig. A 2750 10 25-1/2 24 40 70-1/2 3-1/2 320 370 2-20x25x2 24
FRH-10-50 FCRH-10-50 Fig. B 2750 10 25-1/2 42 42 72-1/2 3-1/2 500 560 4-20x25x2 48
FRH-12-50 FCRH-12-50 Fig. B 5000 12 252 42 42 72-1/2 3-1/2 510 570 4-20x25 0 48
FRH-14-50 FCRH-14-50 Fig. B 5400 14 25-1/2 42 42 72-1/2 3-1/2 510 580 4-20x25x2 48
FRH-14-100 FCRH-14-100 Fig. C 5400 14 40-3/4 52 52 82-1/2 4-1/2 910 1020 8-20x25x2 96
FRH-16-100 FCRH-16-100 Fig. C 7000 16 40-3/4 52 52 82-1/2 4-1/2 920 1040 8-20x25x2 96
FRH-18-100 FCRH-18-100 Fig. C 8900 18 40-3/4 52 52 82-1/2 4-1/2 920 1050 8-20x25x2 96
FRH-20-100 FCRH-20-100 Fig. C 11,000 20 40-3/4 52 52 82-1/2 4-1/2 930 1070 8-20x25x2 96
FRH-20-150 FCRH-20-150 Fig. D 11,000 20 61 60 60 90-1/2 4-1/2 1370 1600 12-20x25x2 144
FRH-24-150 FCRH-24-150 Fig. D 16,000 24 61 60 60 90-1/2 4-1/2 1380 1640 12-20x25x2 144
FRH-24-200 FCRH-24-200 Fig. C 16,000 24 50-3/4 62 62 92-1/2 4-1/2 1540 1770 16-20x25x2 192
FRH-30-200 FCRH-30-200 Fig. C 20,500 30 50-3/4 62 62 92-1/2 4-1/2 1550 1820 16-20x25x2 192
FRH-30-300 FCRH-30-300 Fig. D 20,500 30 76 72 72 102-1/2 4-1/2 2320 2670 24-20x25x2 288
FRH-36-300 FCRH-36-300 Fig. D 35,500 36 76 72 72 102-1/2 4-1/2 2380 2800 24-20x25x2 288
Dimensions In Inches, Weights In Lbs.
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