In some industry (electronics, pharmaceutical, food preparation, pneumatic conveying, etc.) or for installations with external pipe work, a pressure DewPoint of +3°C from a refrigerant dryer is not sufficient. For these applications, a heatless adsorption dryer is required supplying compressed air at a pressure DewPoint of down -70 °C. Heatless dryers are compact and have low purchase and maintenance costs. The HDT heatless adsorption dryers consist of two parallel vessels filled with adsorption material (molecular sieve). While compressed air is dried in one tower, the second saturated tower, having just come off line, is regenerated. A small amount of dried compressed air is used for this purpose. All accessories of this range
Data in the table refer to the nominal condition and max. working condition written to flank. Average purge flow rate 13,8% at standard condition (with fixed cycle times). Standard power supply: 1/230-240/50-60 Different pressure DewPoint (up to -70°C) available on request. Upon request different Power Supply or pneumatic control dryers. Specify pressure DewPoint requested (-20°, -40°, -70°C) when placing order. Nominal inlet air pressure:  at 7 barg and 35°C Pressure DewPoint:  -40°C  Max. working condition Ambient temperature:  50°C Inlet air temperature:  50°C Inlet air pressure:  at 10.3 barg Model Inlet filter Outlet filter Flow Rate Connections Dimensions [mm] Weight Model Model Nl/min Nm³/h scfm Ø IN-OUT A B C Kg HDT 3 FTX 008 FTS 008 320 19.2 11 G3/8" BSP-F 445 400 1.145 55 HDT 5 FTX 008 FTS 008 530 31.8 19 G3/8" BSP-F 445 400 1.735 65 HDT 8 FTX 008 FTS 008 760 45.6 27 G3/8" BSP-F 450 400 1.830 71 HDT 12 FTX 012 FTS 012 1.200 72 42 G1/2" BSP-F 520 600 1.945 87 HDT 18 FTX 018 FTS 018 1.850 111 65 G3/4" BSP-F 630 600 1.940 111 HDT 25 FTX 030 FTS 030 2.500 150 88 G1" BSP-F 755 600 1.945 128 HDT 30 FTX 030 FTS 030 3.000 180 106 G1" BSP-F 885 700 1.935 161 HDT 40 FTX 055 FTS 055 3.900 234 138 G1.1/2" BSP-F 920 700 1.920 186 HDT 50 FTX 055 FTS 055 5.000 300 177 G1.1/2" BSP-F 1.005 700 1.985 232 HDT 60 FTX 080 FTS 080 6.200 372 219 G1.1/2" BSP-F 1.035 700 1.940 283 HDT 75 FTX 080 FTS 080 7.500 450 265 G1.1/2" BSP-F 1.060 700 2.000 305 HDT 90 FTX 120 FTS 120 9.000 540 318 G1.1/2" BSP-F 1.060 700 1.995 340 HDT 130 FTX 160 FTS 160 12.800 768 452 G2" BSP-F 1.200 760 2.020 403 HDT 160 FTX 160 FTS 160 16.200 972 572 G2" BSP-F 1.310 870 2.020 485 HDT 200 FTX 250 FTS 250 20.500 1.230 724 G2.1/2" BSP-F 1.475 1.040 2.162 702 HDT 250 FTX 250 FTS 250 25.500 1.530 901 G2.1/2" BSP-F 1.525 1.050 2.180 813 HDT 300 FTX 400 FTS 400 30.000 1.800 1.060 DN80 PN16 1.535 1.050 2.280 1.113 HDT 350 FTX 400 FTS 400 36.000 2.160 1.272 DN80 PN16 1.625 1.200 2.320 1.250 HDT 400 FTX 400 FTS 400 42.000 2.520 1.484 DN80 PN16 1.675 1.200 2.340 1.850 HDT 450 FWX 450 FWS 450 45.600 2.736 1.611 DN100 PN16 1.800 1.300 2.465 2.400 HDT 620 FWX 680 FWS 680 62.500 3.750 2.208 DN125 PN16 1.985 1.600 2.485 2.800 HDT 800 FWX 900 FWS 900 81.000 4.860 2.862 DN150 PN16 2.260 1.760 2.680 3.400 HDT 1000 FWX 1100 FWS 1100 102.000 6.120 3.604 DN150 PN16 2.480 1.940 2.700 4.000 HDT 1200 FWX 1300 FWS 1300 126.000 7.560 4.452 DN150 PN16 2.640 2.210 2.885 4.900 HDT 1500 FWX 1500 FWS 1500 151.000 9.060 5.336 DN200 PN16 2.795 2.290 2.965 5.500 - Friulair S.r.l. reserves the right to modify, in any moment technical details without notice - Correction factor for operating pressure changes  Inlet air pressure [barg] 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0  Factor 0.62 0.77 0.90 1.00 1.09 1.17 1.24 1.31 1.37 1.42 1.47 1.52 1.56 Correction factor for inlet air temperature changes  Air temperature [C°] <=25 30 35 40 45 50  Factor 1.12 1.06 1.00 0.93 0.86 0.78