SD SeriesREGENAIR ® Regenerative BlowersSeparate Drive ModelsModels SDR4, SDR5, SDR6, SDR6PPressure, vacuum, and air flow varies for these models,depending on the RPM. Reference the individual model’sperformance grids for specific data. The performance chartsbelow reflect maximum duty for each model.Maximum Maximum MaximumMODELS Pressure (inH 2O) Vacuum (inH 2O) Air Flow (CFM)Product Dimensions (inches, mm)Model SDR41.8847,751.2531,75.188 SQ. KEY4,78Dia.874422,21 .874822,221.7143,43Model SDR51.7544,4512.44315,9811.90302,263.7595,252.9173,914 x .47 Dia Thru11,946.18156,9711.25285,75IN8.86225,0410.00254,003.96100,58OUT8.93226.8211.80299.722 x1 1/2NPT.4411.18SDR4SDR5SDR6SDR6P110 90 147152 120 240155 135 300150 125 360PRODUCT FEATURES• Oilless operation• Rugged construction, low maintenance• Drive pulley size can be changed to lower the speed andchange blower performance• Aluminum cover, impeller, and housing on models SDR4,SDR5, SDR6• Aluminum impeller, cast iron, and housing on model SDR6PRECOMMENDED ACCESSORIES• Pressure gauge AE133• Inlet filter AJ126D (SDR4)AJ126F (SDR5 - SDR6)AJ126G (SDR6P)• Vacuum gauge AE134• Vacum in-line filter AJ151E (SDR4)AJ151G (SDR5 - SDR6), AJ151H (SDR6P)• Muffler AJ121D (SDR4, SDR5)AJ121F (SDR6, SDR6P)• Relief valve AG258Model SDR6Model SDR6P60 <strong>Gast</strong> Regenair® Regenerative Blowers www.gastmfg.com
SD SeriesREGENAIR ® Regenerative BlowersProduct SpecificationsMODELNUMBERSDR4SDR5SDR6SDR6PMaximum RPM5500550055004500HP/kW required at maximum RPM and Vacuum3/2,28/611.5/8,610.6/7, 9HP/kW required at maximum RPM and Pressure4/310/7,515/11,115/11, 1NetWeight (lbs/kg)27/1237/1770/32111/50SDR4mbar psig3004.02503.5200 3.02.51502.0100 1.51.050.5inH 2 012010080604020PRESSURE5500 RPM5000 RPM4500 RPM4000 RPM3450 RPM2850 RPMinHginH 2 00 0 20 40 60 80 100 120 140 160 CFM350 100 150 200 250 m /hFree Air FlowCFMHorsepower4.003.002.001.0000 205500 RPM5000 RPM4500 RPM4000 RPM3450 RPM2850 RPM40 60 80 100 120 inH 2 050100 150 200Pressure250300mbarinH 2 0www.gastmfg.com<strong>Gast</strong> Regenair® Regenerative Blowers 61