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GZW-1 deflagration type pipeline flame arrester

GZW-1 deflagration type pipeline flame arrester

  • Model:GZW-64C/GZW-64P/GZW-16C/GZW-16P
  • Specification:DN50-DN250
  • Temperature:≤480ºC
  • Medium:oil and gas storage tanks, pipelines
  • Pressure:0.6~6.4MPa
  • Connection method: flange connection
  • Driving method:automatic
  • Material:carbon steel, stainless steel
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GZW-1 deflagration type pipeline flame arresterOverview

The GZW-1 deflagration type pipeline flame arrester is a safety device installed on pipelines carrying flammable and explosive gases, specifically designed to prevent the propagation of subsonic flames (explosive combustion) within the pipeline. It employs a stainless steel corrugated plate flame-retardant core that utilizes the microporous gaps in the corrugated channels to quench the flame, confining it to one side of the pipeline and preventing its spread to downstream equipment or storage tanks. This extinguisher is suitable for applications where combustible gases may be present in the pipeline and the flame propagation speed is below the speed of sound. Its primary use is in oil vapor recovery lines, venting systems, fuel gas pipelines, or ventilation ducts; it blocks flame propagation during accidental combustion, safeguarding upstream and downstream equipment, personnel, and the environment while complying with fire and explosion prevention regulations in industries such as petrochemicals and gas transmission and distribution.

Product Drawing of GZW-1 deflagration type pipeline flame arrester

GZW-1 deflagration type pipeline flame arresterCharacteristic

1. Specifically for deflagration flame arresting: Optimized design for subsonic flame (deflagration, flame speed typically ≤0.6 Mach) with high flame arresting efficiency, suitable for long pipelines or confined spaces where flame propagation may occur.

2. Corrugated plate flame arrestor element: Alternately wound multi-layer stainless steel corrugated and flat strips form uniform triangular/rectangular narrow passages, providing very short flame quenching distance and stable reliable performance.

3. Bidirectional flame arresting: Capable of blocking flame propagation from either direction, suitable for piping systems where combustion may initiate from either side.

4. Large flow area, low pressure drop: High porosity (≥90%) of the flame arrestor element minimizes gas flow resistance without affecting normal pipeline flow capacity.

5. Corrosion and temperature resistance: Element and housing made of 304/316L stainless steel, resistant to short-term high-temperature flame impact and corrosive media environments.

6. Compact structure, easy installation: Standard flange interfaces match pipeline; can be installed horizontally or vertically; removable housing allows easy extraction of the element for cleaning.

7. Code compliant: Designed and manufactured according to GB/T 13347, ISO 16852, EN 12874 and other standards, certified by authorized testing agencies.

8. Easy maintenance: Flame arrestor element can be periodically extracted for cleaning of carbon deposits or impurities and then reinstalled, eliminating the need for complete replacement.

GZW-1 deflagration type pipeline flame arresterstructure principle

Structure Diagram of GZW-1 deflagration type pipeline flame arrester

Component name and material

阀体材料 (Valve Body Material)碳钢WCB、不锈钢304、316、
阻火芯件材料 (Fire Retardant Core Material)不锈钢防爆阻火波纹板
密封件材料 (Sealing Component Material)耐油石棉橡胶、四氟PTFE
环境温度℃ (Ambient Temperature ℃)≤480
公称压力(MPa) (Nominal Pressure (MPa))0.6~5.0
防爆级别 (Explosion-proof Grade)BS5501:ⅡA、ⅡB、ⅡC


GZW-1 deflagration type pipeline flame arrestertechnology parameter

Performance Specification Table

结构形式Structure Type普通型Standard Type阻爆型Deflagration Flame Arrester Type阻爆装型Detonation Flame Arrester Type
试验安全间隙 (mm)Maximum Experimental Safe Gap (MESG,mm)MESG≥0.90.5 < MESG < 0.9MESG≤0.5
阻火级别Flameproof GradeIIAIIBIIC
使用场所Application Scenario储罐、管道放空Storage tanks,pipe end vents放空管、燃气管道Vent pipes,gas pipelines爆装管道Detonation pipelines


GZW-1 deflagration type pipeline flame arresterstandard size

GZW-1 deflagration type pipeline flame arrester of Outline Drawing

Outline dimension table

型 号 Model规格 SpecificationPN (MPa)外形尺寸(mm)Dimensions (mm)螺栓 Bolt
KDDLL数量 Quantity螺纹Thread
GZW-20DN201.6751051952004M12
GZW-25DN25851151952004M12
GZW-40DN401101502452404M16
GZW-50DN501251652452404M16
GZW-80DN801602002802508M16
GZW-100DN1001802203352608M16
GZW-150DN1502402854603608M20
GZW-200DN20029534052042012M20
GZW-250DN25035540558043012M24
GZW-300DN30041046070545012M24
GZW-600DN600770840112058020M33