Membrane tube diffusers
PRO₂AIR Pre-PUR 602
PRO₂AIR Pre-PUR 602 is a ready-assembled membrane tube diffuser for aerating wastewater in sewage treatment plants and in fixed-bed and bioreactors. The membrane is made of polyurethane (PUR) with a wall thickness of 0.7 mm, the adapter body is polypropylene with a 3/4" internal thread, and the clamps are stainless steel 1.4301 (AISI 304). It comes in three lengths.
- Polyurethane (PUR)
- −40 to +60 °C
- DWA-M 115
- Wastewater
Technical specifications
The product's key specifications are briefly summarised below.
| Type | Membrane tube diffuser, ready-assembled |
|---|---|
| Membrane | Polyurethane (PUR) |
| Colour | Transparent |
| Adapter body | Polypropylene (PP) |
| Clamps | Stainless steel 1.4301 (AISI 304) |
| Wall thickness | 0.7 mm |
| Temperature | −40 to +60 °C |
| Manufacturer SKU | 6022702 |
Dimensions and ordering
The table shows the three lengths.
| Inner Ø |
Thread | Total length |
Weight |
Article no. |
|---|---|---|---|---|
| 64.5 | 3/4" | 570 | 0.63 | 60205702702 |
| 64.5 | 3/4" | 820 | 0.82 | 60208202702 |
| 64.5 | 3/4" | 1070 | 1 | 60210702702 |
The active (vent) length is 500 mm for 570 mm, 750 mm for 820 mm and 1000 mm for 1070 mm. Weight is per piece.
Frequently asked questions
What is the difference between PUR and EPDM?
According to the manufacturer, the PUR membranes have a wider operating range (normal operation 3–8 Nm³/(h·m Aer.)) and withstand −40 to +90 °C (Pre-PUR 602 only up to +60 °C), while the EPDM membranes have normal operation 6–8 Nm³/(h·m Aer.) and withstand 0 to +85 °C.