Every bubble disc diffuser has an integral "triple" check valve to prevent fluid backflow. Normal airflow range is 0–5 cm. Resistance is about 10" H2O when clean. Has fine bubble EPDM membranes installed and weighs 2 lbs. Medium, coarse and coarse/fine combination membranes are also available for specialty applications (call for pricing).
Technical Data Sheet For Mbbr Media
Model | STEP-Dd-9 | STEP-Dd-12 |
Shape Of Aerator | Disc Type | Disc Type |
Moc Of Membrane | Epdm | Epdm |
Size Of Aerator | 9” | 12” |
Type Of Bubble | Fine Bubble | Fine Bubble |
Size Of Bubbles | 0.8 Mm – 2.1 Mm | 0.8 Mm – 2.1 Mm |
Air Flow Rate | 2.5 – 5.0 Cum/Hr | 4.2 – 8.3 Cum/Hr |
Flow Range | 0 -12.0 Cum/Hr | 0 – 20.0 Cum/Hr |
Moc Of Membrane Subiort | Abs | Abs |
Active Surface Area | 0.0375 | 0.0650 Sqm |
Operating Temperature Range | 35 Deg. Cel | 35 Deg. Cel |
Temperature Tolerance | Max 85 Deg. Cel | Max 85 Deg. Cel |
Oxygen Utilization Ratio (%) | 30 | 30 |
Size Of End Connection | 3/4” Npt, Male | 3/4” Npt, Male |
Slit Quantity | 6600 | 10155 |
Weight | 0.680 Kgs | 1.4 Kgs |