Explosion Isolation Knife-Gate Valves Protection

Performance Features

Enables safe explosion protection in the pipe system without any pressure drop
Available in three different versions and is suitable for dust, gas and in CIP-applications
Short installation distances thanks to compact design
Flexible installation at any angle
Approved for organic and metallic dusts, hybrid mixtures and gases

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Description
Types
Sizing
Documentation

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, P_max. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept P_max. 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, P_red. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept P_red. 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, P_red. In addition, all of the piping and equipment upstream of the isolation device must also be designed to accept P_red. This will typically require a design pressure as low as 2 or 3 psig (0.14 or 2 bar).

Sizing

Product Literature

The MBS Detec-Saf Alarm Systems Brochure

Understanding NFPA 654 Brochure

Industrial Explosion Protection Brochure

An introduction to Industrial Explosion Protection and Prevention including information on venting, suppression, spark detection, isolation and testing.