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PRO₂AIR® Pre-PUR 620
Membrane diffuser tube
Product details
Application
- membrane diffuser tube, for industrial and municipal wastewater treatment plant, pressure diffusion with fine bubbles, oxygen input for nitrication in activation basins, permanent and intermittend ventilation
- oxygen input and circulation in xed-bed and bioreactors, thorough mixing of activation basins, sand trap louvre ventilation, renaturation of lakes and rivers, aquacultures, sh farming
Properties
- high energy savings when compared with comparative, market standard EPDM and silicone diffusors due to the much lower pressure loss
- extremely long lifetime and no curing due to the membrane not including a plasticizer
- very wide operating range: normal operation: 3-8, minimum 1, maximum 15 and purging operation 18 Nm³/(h*maer.)
- comparatively high oxygen input and oxygen oxygen transfer efficiency even with low density systems
- very fine and uniform bubble formation due to an optimized perforation
- easily and quickly fitted
- extremely tear-resistant and abrasion-resistant (mechanical strength around 2.5-4 times that of most of the EPDM and silicone materials)
- very good resistance to waste water and municipal sewerage in accordance with the latest instructions DWA-M 115
- microbe and hydrolysis resistant
- good resistance to oil, gasoline, and chemicals
- conforms to RoHS guideline
Temperature range
- -40°F to 195°F
Design
- wall: special premium polyurethane (Pre-PUR®)
- wall thickness 0.0275 in approx.
Delivery variants
- further diameters and lengths available on request
- transparent (standard)
- special colors: full colored
Article variants
Size
(in)
(in)
I.D.
(mm)
(mm)
Length
(in)
(in)
Ventilation
length
(in)
length
(in)
Weight
(lb/pcs)
(lb/pcs)
Order No.
Further Article Details
Size (in)
2.480
I.D. (mm)
2.539
Length (in)
22.441
Ventilation length (in)
19.685
Weight (lb/pcs)
0.221
Further Article Details
Size (in)
2.480
I.D. (mm)
2.539
Length (in)
32.283
Ventilation length (in)
29.528
Weight (lb/pcs)
0.331
Further Article Details
Size (in)
3.543
I.D. (mm)
3.602
Length (in)
39.370
Ventilation length (in)
36.614
Weight (lb/pcs)
0.551
Further Article Details
Size (in)
3.543
I.D. (mm)
3.575
Length (in)
39.370
Ventilation length (in)
35.827
Weight (lb/pcs)
0.551
Further Article Details
Size (in)
2.480
I.D. (mm)
2.539
Length (in)
42.126
Ventilation length (in)
39.370
Weight (lb/pcs)
0.441
Positive and negative pressure ratings are the recommended maximum operating values. Products can be manufactured to meet higher operating values upon request. The bend radius is calculated from the center of the hose in an arched position. Additional information at www.norres.com/us/technology/. NORRES reserves the right to modify technical data at any time. Technical data based on tests at 68°F and are approx. values. Proper use and maintenance of NORRES hoses is the sole responsibility of purchaser and ultimate user of the product. The individual conditions, applications and the number of variables make firm recommendations technically impossible. This information is intended as a general guide only.
Accessories
CONNECT 229
Pliers for assembly of one ear clamps
To the product
CLAMP 682
Single ear clamp for assembly of membrane diffuser tubes on adapter bodies
To the product
CONNECT 683
Seal for assembly of adapter bodies
To the product
CONNECT 684
Connector for mounting membrane tube diffusers on rectangular profiles from both sides
To the product
CONNECT 685
Adapter for the drillholes with a diameter of 1.77 in
To the product