Product Catalog
Draw-out Flame Arrestor
The drawer type flame arrestor, also called extractable or serviceable flame arrestor, is a pipeline and storage tank flame arrestor that allows the flame arrestor element to be quickly pulled out online. It is widely applied to vent nozzles of fixed roof storage tanks, downstream of breather valves, main vent headers and flammable gas pipelines. It integrates flame arresting function with convenient maintenance, and is extensively used in petrochemical plants and oil depots.
- Parameters
- Drawing
- Application areas
Core Features
The shell side is fitted with an openable cover plate and drawer-style element frame. There is no need to dismantle pipelines or breather valves; the flame arrestor element can be pulled out for cleaning or replacement simply by opening the cover, delivering high maintenance efficiency.
Structural Composition
Shell:Carbon steel / 304 / 316L stainless steel, flanged connection complying with GB, HG, ANSI, DIN, GOST standards.
Flame Arrestor Element (Core Component):304 or 316L corrugated plates, multi-layer wire mesh or porous metal; the clearance is designed in accordance with the MESG of the process medium.
Sealing Components:PTFE, fluoroelastomer (FKM), metal graphite gaskets
Explosion Protection Grades
Deflagration-resistant IIA，Deflagration-resistant IIB，Detonation-resistant IIB，Detonation-resistant IICC
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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