Product details of the membrane disc diffuser
Quick Overview
DUBHE membrane disc diffuser features reasonable structure and appealing design. The product has been tested for a long time and thus has a stable performance. DUBHE has been cooperating with lots of professional manufacturers in China.
Product Information
Compared with other ordinary products, the membrane disc diffuser produced by Dubhe has the following advantages.
Technical Parameters
| MODEL | ECD215 (7inch) | ECD/AFD270 (9inch) | ECD/AFD350 (12inch) |
| Active Surface Area (m²) | 0.0225 | 0.0375 | 0.065 |
| Size (inch) | 7 (215mm) | 9 (251mm) | 12 (330mm) |
| Design Flow (m³/hr) | 0.5-2.5 | 2.5-5.0 | 4.0-8.3 |
| Membrane Thickness (mm) | 2 | 2 | 2 |
| Hole Size (mm) | 1mm or 2mm | 1mm or 2mm | 1mm or 2mm |
| Slit Quantity | 3900 | 6600 | 10155 |
| SOTE (%) (4.5m Water Depth) | 22-40 | 31-59 | 35-59 |
| Drag Loss (Pa) | 1285-2124 | 2200-4100 | 2000-4400 |
| Service Life (year) | ≥5 | ≥5 | ≥5 |
Product details
Material
EPDM diaphragm performance parameters
| Item | Criteria | Unit | Values |
| Hardness | ASTM D2240-95 | Shore A | 60 |
| Tensile strength | ASTM D412-92 | N/mm² | >2000 |
| Tear strength | ASTMD624-91,Die T | N/m | >110 |
| Permanent deformation at 100% elongation | ASTM D412-92 | % | <5% |
| Maximum elongation at tear | ASTM-D412-92 | % | 600 |
| Ozone Resistance (70hours, 40°C, 50mPa partial ozone pressure, no decomposition) | ASTM D1171-94 | - | eligible (voter etc) |
| UV resistance | - | - | Qualified |
| Hot air ageing resistance (70hours, 70°C) | ASTM D573-88 | - | Tear strength change rate <3% |
| - | Change in tearing elongation <25% | ||
| - | Hardness change <5 degrees | ||
| Rate of change of deformation in compression (22hours, 70°C) | ASTM D573-88 | % | <20 |
| Liquid Resistance, Volume Change (water, 70hours, 100°C) | ASTM D471-94 | % | <3 |
| Low Temperature Resistance (-40º C, non-crisp) | ASTM D832-92 | - | Qualified |
| Attached: Membrane material composition table | |
| Polymer | 58% |
| Carbon Black | 17.5% |
| Plasticisers | 19% |
| Others | 5.5% |
PTFE test report
SSI PTFE and PEEK coated diffusion films do not contain PFAS or PFOA.
When SSI worked with suppliers to develop coatings in the 2000s, SSI insisted on coating packages that did not contain heavy metals or by-products that could theoretically be used in potable water service, even if our products were used in wastewater.
Drawings & Dimensions
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FAQ
Company Advantages
DUBHE is a well-developed mature company that produces membrane disc diffuser. membrane disc diffuser has won high recognition from customers with its highest quality. We protect the environment through the eco-friendly design and manufacturing of our products and solutions, and the adoption of sustainable measures in our services and supply chain operations.
Our products are of high quality and great safety. Besides, they are packed tightly and shockproof. Customers can rest assured to purchase our products and are warmly welcomed to contact us for details.
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