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Vacuum Stainless Steel ISO-BT Fixed Bolted Blank Flange SS304
Series 76 ISO flange components are a vacuum flanging system for 63 mm to 1000 mm fittings. The dimension criteria are based on requirements established by the International Standards Organization (ISO). There are two flange styles in the ISO-Universal system: ISO-MF (multi-fastener flange) and ISO-BF (bolted flange). These flanges are also referred to as ISO-LF (large flange), ISO-K, ISO Universal, or as plain "ISO" flanges.
There are several advantages in the use of ISO components. One advantage is that the flange is “sexless.” The seal is on a symmetrical centering ring that interfaces with two identical flanges. In addition, ISO Universal flanges are more compact than ASA flanges, which were designed for pressure and are unnecessarily massive for vacuum use. Since these flanges are an ISO standard, they can be used with components from other manufacturers.
Series 76 flanges and components are made of type 304 stainless steel. Centering ring and seal assemblies are offered with an aluminum centering ring and spacer ring, or with a stainless centering ring and an aluminum spacer ring. Rotatable bolt rings and clamps are made of aluminum alloy. Retaining rings are made of steel. Flange seal surfaces are carefully machined and inspected for defects. They are cleaned and packaged to remain clean and protected in shipping. The Series 76 ISO-Universal flange components can be connected in various ways.
| Parameter | Description |
|---|---|
| Type | BT Series Inner Weld Flanges |
| Material | Stainless Steel (typically 304 or 316) |
| Sealing Method | Metal Seal Ring |
| Pressure Range | High vacuum to ultra-high vacuum (typically ≤ 10^-9 Torr) |
| Temperature Range | -196°C to 450°C |
| Pipe Diameter | Customizable per client requirements |
| Welding Method | TIG (Gas Tungsten Arc Welding) or Electron Beam Welding |
| Welding Material | Welding material compatible with pipe material |
| Welding Quality | Conforms to ASTM standards or client specifications |
| Application | Ultra-high vacuum systems, laboratory equipment, semiconductor industry, etc. |
