Technical Parameters
| MODEL | AFC75 | ReliaBall |
| Diameter (inch) | 4.2 | 3.47 |
| Membrane Surface Area (inch²) | 13.8544 | 35.23 |
| Orifice (inch) | 3/4 | 3/4 |
| Airflow Range (SCFM) | 1-16 | 1-15 |
| Holes Quantity | 10 | 12 |
| Service Life (year) | ≥5 | ≥5 |
Product scenario
Material
EPDM diaphram 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
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.
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