Flame-Free Venting Device (Flame-Free Vent Valve)

Flame-free explosion venting consists of two parts:
1) Explosion vent panel;
2) Flame quenching module;

Introduction to Pipeline Flame-Free Explosion Vent (Flame-Free Explosion Vent Valve):
Effectively prevents flames and heat, providing a safe environment for equipment, buildings, and personnel;
Suitable for indoor dust explosion venting without flames;
Effectively collects dust without polluting the environment;
High venting efficiency, economical and practical;
Frame material: Carbon steel or stainless steel;
Flame arrestor material: 304SS;
Applicable dust: St1 and St2 dust with Kst ≤ 300 barg*m/s;
Effective venting area meets explosion venting requirements;
Installation method: Mounted directly on equipment or pipelines using flange connections;
Explosion vent panel must be replaced after explosion venting;
Test reports from domestic authoritative institutions can be provided;

Product Functions:

1. Extinguishes explosion flames—No explosion flames can escape, ensuring a safe operating environment.
2. Retains explosion dust—Captures process materials, eliminating potential harmful substances from entering the environment.
3. Controls explosion pressure—Absorbs peak explosion pressure, protecting personnel and the surrounding environment from explosion pressure damage.
4. Controls explosion temperature—Absorbs the explosion fireball, preventing a significant rise in ambient temperature.

Pipeline Flame-Free Explosion Vent (Flame-Free Explosion Vent Valve) Product Features:
Static activation pressure: 0.01 MPa.
Material: Carbon steel / 304 stainless steel.
No special maintenance required.
Online maintenance structure available, allowing replacement of explosion vent panels and cleaning of flame arrestor elements without disassembling connections.
Flange interfaces can be customized.
Complies with EN16009 standard, passing standard tests.
Offers various forms of flame-free venting structures to meet different working condition requirements.
No open flame design, effectively preventing significant losses caused by secondary dust explosions.
Applicable equipment: Dust collectors, bucket elevators, drying equipment, cyclone separators, dust collectors, etc.

There are three main methods for dust explosion protection: venting, isolation, and suppression.
Venting: Releases explosion pressure in advance through a pressure relief device to protect equipment from damage.
Isolation: Blocks the explosion using an isolation valve to prevent flame propagation.
Suppression: Detection devices identify sparks and trigger fire suppression systems to instantly extinguish flames, preventing explosions.

Explosion vent panels are widely used in industries such as grain, metallurgy, chemicals, power, light industry, pharmaceuticals, tobacco, machining, and solid waste treatment. They are applied in equipment like cyclone separators, baghouse dust collectors, dust collectors, cartridge filters, pneumatic conveying systems, rod or ball mills, bucket elevators, dryers and ovens, roller mills, and buildings. They are mainly used in low-pressure,常温 environments requiring large venting areas, such as dust collectors, dust collection pipelines, and elevators.

In the past, explosion vent panels were commonly installed on dust collectors to release overpressure caused by dust explosions. However, installing such devices indoors is not permitted by safety regulations because it endangers nearby personnel and equipment. The pressure waves and flames from explosions may cause secondary or multiple explosions, posing greater risks. Therefore, relying solely on explosion vent panels for dust collectors is not reliable. We recommend using flame-free explosion venting + isolation technology (a more economical solution) or suppression + isolation technology to ensure production safety.