Product Catalog
Detonation Flame Arrestor
Detonation flame arrestors are designed to block the reverse propagation of supersonic detonation flames (1000–3000 m/s). They are compatible with all flammable gas groups IIA, IIB and IIC (including hydrogen and acetylene).
- Parameters
- Drawing
- Application areas
Working Principle
Slit Quenching:When flame flows through narrow channels formed by corrugated plates, wire mesh or porous metal (gap smaller than the MESG of the process medium), heat is rapidly dissipated, which extinguishes the flame.
Detonation Resistance:Capable of blocking supersonic flame and completely quenching it.
Burn Resistance:Withstands short-duration sustained burning to protect the flame arrestor element from burnout damage.
Instant Detonation Pressure Resistance:Can resist transient detonation pressure impact ranging from 20 bar to 100 bar.
Structural Composition
Shell:Carbon steel / 304 / 316L stainless steel, flange connection (standards: GB, HG, ANSI, DIN, GOST)
Flame Arrestor Element (Core Component):304 or 316L corrugated plates, multi-layer wire mesh or porous metal; internal gaps engineered in accordance with the MESG of the medium.
Sealing Components:PTFE, fluoroelastomer (FKM), metal graphite gaskets
Qualifications & Certifications
Type Approval for IIB Detonation Resistance，Type Approval for IIC Detonation Resistance，ATEX Type Approval
Applicable Standards
GB 5908-2024
ISO 16852、SH/T 3413-2019
EN ISO 16852-2016、EN 1127-1-2019
Parameter
| Parameter | Standard Version | Premium Version | Remarks |
|---|---|---|---|
| Nominal Diamete | DN25 ~ DN1200 | Customizable | Matches pipeline nominal diameter |
| Pressure Class | PN10/16/25/40 | PN16 ~ PN40 | High pressure ≥6.4MPa available by customization |
| Design Temperature | -40℃ ~ 400℃ | -60℃ ~ 450℃ | 316L / Duplex steel for high-temperature service |
| Flame Arrest Grade | Deflagration-resistant (Group IIA/IIB) | Dual grade IIA & IIB | Group IIC requires detonation-resistant type |
| MESG Clearance | ⅡA＜0.9mm；ⅡB＜0.5mm | ⅡA≤0.8mm；ⅡB≤0.45mm | Safety margin: 0.8–0.9 times |
| Deflagration Resistance Test | Passes 6 consecutive deflagration tests | 6 deflagration tests + 1-hour burn resistance | GB 5908-2024 |
| Pressure Drop | ≤5kPa（DN100，10m/s） | ≤3kPa | Lower value represents better performance |
| Burn Resistance Duration | End fitting: 1h; In-line: ≤10min | End fitting: 1.5h | Test medium: Propane 4%±0.4% volume concentration |
| Explosion-proof Mark/td> | Exd ⅡBT4 | Exd ⅡBT6 | Suitable for chemical hazardous explosion zones |
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