10 www.parker.com/gsfe Compressed Air Filters To correctly select a separator model, the flow rate of the separator must be adjusted for the minimum operating (inlet) pressure at the point of installation. 1. Obtain the minimum operating (inlet) pressure and maximum compressed air flow rate at the inlet of the filter. 2. Select the correction factor for minimum inlet pressure from the CFMIP table (always round down e.g. for 5.3 bar, use 5 bar correction factor). 3. Calculate the minimum filtration capacity. Minimum Filtration Capacity = Compressed Air Flow Rate x CFMIP. 4. Using the minimum filtration capacity, select a filter model from the flow rate tables above (filter selected must have a flow rate equal to or greater than the minimum filtration capacity). Minimum Inlet Pressure bar g 1 2 3 4 5 6 7 8 910111213141516 psi g 15 29 44 58 73 87 100 116 131 145 160 174 189 203 218 232 Correction Factor 4.00 2.63 2.00 1.59 1.33 1.14 1.00 0.94 0.89 0.85 0.82 0.79 0.76 0.73 0.71 0.68 Stated flows are for operation at 7 bar (g) (102 psi g) with reference to 20°C, 1 bar (a), 0% relative water vapour pressure. For flows at other pressures, apply the correction factors shown below. Product Selection & Correction Factors Separator Coding Example Example code SFH067N Flow Rates Model Pipe Size L/S m³/min m³/hr cfm Inlet Outlet SFH029 DN80 DN80 490 29.4 1764 1038 SFH030 DN100 DN80 500 30.0 1800 1059 SFH037 DN100 DN100 610 36.6 2196 1293 SFH038 DN125 DN100 633 38.0 2280 1342 SFH066 DN125 DN125 1093 65.6 3936 2317 SFH067 DN150 DN125 1117 67.0 4020 2366 SFH088 DN150 DN150 1473 88.4 5304 3122 SFH089 DN200 DN150 1483 89.0 5340 3143 SFH097 DN200 DN200 1618 97.1 5826 3429 SFH142 DN250 DN200 2365 141.9 8514 5011 SFH180 DN300 DN200 2992 179.5 10770 6339 SFH209 DN350 DN200 3485 209.1 12546 7385 Technical Data Filtration Grade Water Separator Models Minimum Operating Pressure Maximum Operating Pressure Minimum Operating Temperature Maximum Operating Temperature bar g psi g bar g psi g °C °F °C °F SFH SFH029N - SFH209N 1 15 16 232 2 35 60 140 SFH Liquid Separators (Carbon Steel) CFMIP - Correction Factor Minimum Inlet Pressure
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