SC SE ST GPM FLOW VELOCITY GPM @ Rated Flow (Ft/Sec) @5Ft/Sec. Flow Velocity SC05 SE05 ST05 5 5.28 4.7 SC08 SE08 ST08 8 4.81 8.3 SC10 SE10 ST10 10 3.71 13.5 SC20 SE20 ST20 20 4.29 23.3 SC30 SE30 ST30 30 4.73 31.7 SC50 SE50 ST50 50 7.88 50 SC51 SE51 ST51 50 4.78 52.2 SC75 SE75 ST75 75 5.02 74.7 SC100 SE100 ST100 100 4.34 114.8 At 225 SSU oil @ 100ºF through 100 mesh element