Explosion Isolation Knife-Gate Valves Protection
爆発しゃ断ナイフゲートバルブ
性能
- 圧力降下なしに、パイプシステム内の安全な防爆を可能にします。
- 3種類のバージョンがあり、粉塵、ガス、CIPアプリケーションに適しています。
- コンパクト設計で設置距離が短い
- どの角度でもフレキシブルに設置可能
- 有機・金属粉塵、ハイブリッド混合ガス、ガスに対応
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Description
Designed to respond in the manner of an ‘air bag’ in a vehicle, when the IVE isolation valve is directed to close, an inflatable bladder immediately fills the body cavity to stop product flow and arrest flame propagation. This operating mode minimizes the reaction forces generated by the IVE valve. The BS&B Type IVE valve is available in sizes from 4” to 16” nominal diameter (100mm to 400mm). Activation of the valve can be by BS&B supplied pressure or optical sensors.
Types
| Process Equipment Protection Basis | Mechanical Isolation Guidelines |
| Containment | The mechanical isolation device applied must be designed to survive the maximum explosion pressure for the process material, Pmax. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept Pmax. This may require a design pressure as high as 230 psig (16 bar). |
| Venting | The mechanical isolation device applied must be designed to survive the reduced explosion pressure of a vented deflagration, Pred. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept Pred. This will typically require a design pressure as low as 3 psig (0.2 bar). |
| Suppression | The mechanical isolation device applied must be designed to survive the reduced explosion pressure of a suppressed deflagratlon, Pred. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept Pred. This will typically require a design pressure as low as 2 or 3 psig (0.14 or 2 bar). |
Sizing
Description
Designed to respond in the manner of an ‘air bag’ in a vehicle, when the IVE isolation valve is directed to close, an inflatable bladder immediately fills the body cavity to stop product flow and arrest flame propagation. This operating mode minimizes the reaction forces generated by the IVE valve. The BS&B Type IVE valve is available in sizes from 4” to 16” nominal diameter (100mm to 400mm). Activation of the valve can be by BS&B supplied pressure or optical sensors.
Types
| Process Equipment Protection Basis | Mechanical Isolation Guidelines |
| Containment | The mechanical isolation device applied must be designed to survive the maximum explosion pressure for the process material, Pmax. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept Pmax. This may require a design pressure as high as 230 psig (16 bar). |
| Venting | The mechanical isolation device applied must be designed to survive the reduced explosion pressure of a vented deflagration, Pred. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept Pred. This will typically require a design pressure as low as 3 psig (0.2 bar). |
| Suppression | The mechanical isolation device applied must be designed to survive the reduced explosion pressure of a suppressed deflagratlon, Pred. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept Pred. This will typically require a design pressure as low as 2 or 3 psig (0.14 or 2 bar). |
Sizing