IsoDisc - Passive Isolation Device
The IEP Technologies™ is a passive explosion isolation device designed to prevent flame and pressure transmission between interconnected process equipment or to the environment. It is used in systems handling combustible dust, such as air aspiration inlets of mills and clean air ducting connected to dust-handling equipment.
Description
The IsoDisc™ operates without external actuation systems. During normal operation, the valve plate is held open by process airflow. In the event of a downstream explosion, the pressure wave forces the valve to close automatically, isolating the upstream process and limiting explosion propagation.
The device is certified as a protective system according to EN 15089 and EU Directive 2014/34/EU (ATEX). It is available with or without a housing and can be directly installed into piping systems.
Technical specification
| Parameter | Value |
|---|---|
| Product Type | Passive explosion isolation device |
| Application | Explosion isolation in dust handling and air duct systems |
| Operating Principle | Self-actuating valve plate closure |
| Certification | EN 15089 / ATEX Directive 2014/34/EU |
| Nominal Diameter Range | DN50 to DN400 |
| Minimum Vessel Volume | 0.34 to 1 m³ (depending on size) |
| Maximum Reduced Explosion Pressure (Pred max) | Up to 3.1 bar (depending on size) |
| Maximum Kst | 224 bar·m/s |
| Maximum Operating Temperature | 130°C (standard) / 250°C (stainless steel version) |
| MESG | 1.36 mm |
| Weight Range | 0.9 kg to 76 kg (depending on size) |
| Material Options | Coated carbon steel / stainless steel |
| Mounting Orientation | Unidirectional installation |
| Flow Resistance | Low pressure drop design |
| Reset Method | Automatic reset (no manual unlocking required) |
| Installation | Type Direct pipe installation or with housing/adapter |
Functional Design Features
- Passive self-actuating explosion isolation system
- Valve plate held open by airflow during normal operation
- Automatic closure under explosion pressure wave
- Frictionless guided valve plate for minimal maintenance
- High operating temperature capability
- Flexible mounting distances
- Suitable for up to two 90° elbows between device and downstream vessel
- Available with pipe adapter housing options
Typical Applications
- Mill air aspiration inlets
- Silos and dust handling systems
- Clean air ducting systems
- Pneumatic conveying systems
- Industrial dust processing equipment
Features
- Passive, self-actuating explosion isolation without external power
- Certified according to EN 15089 and ATEX Directive 2014/34/EU
- Low pressure drop design for efficient airflow
- Automatic reset after activation (no manual intervention required)
- Flexible installation with or without housing
- High operating temperature resistance (up to 250°C stainless steel version)
- Suitable for dust explosion isolation in industrial systems
- Designed for minimal maintenance due to guided valve plate system
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