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GZW-1 deflagration flame arrester

GZW-1 deflagration flame arrester

  • Model:GZW-64C/GZW-64P/GZW-16C/GZW-16P
  • Specification:DN50-DN250
  • Temperature:≤60ºC
  • Medium:oil and gas storage tanks, pipelines
  • Pressure:0.6~6.4MPa
  • Connection method:flange
  • Driving method:automatic
  • Material:carbon steel, stainless steel
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GZW-1 deflagration flame arresterOverview

The GZW-1 deflagration flame arrester is a flame arrestor safety device installed on flammable gas pipelines, specifically designed to prevent the propagation of subsonic flames (deflagration) through the piping system. It employs a stainless steel corrugated plate flame arrestor element, which quenches flames through the narrow gaps between the corrugated plates, confining the flame to one side of the pipeline and preventing it from reaching downstream equipment or storage tanks. This flame arrester is suitable for applications where combustible gas combustion may occur within the pipeline with flame propagation speeds below sonic velocity. Its core purpose is to be installed on vapor recovery lines, vent systems, fuel gas pipelines, or ventilation ducts to block flame propagation during accidental combustion, protecting upstream and downstream equipment, personnel, and the environment, while meeting fire and explosion protection codes in industries such as petrochemical and gas transmission and distribution.

Product Drawing of GZW-1 deflagration flame arrester

GZW-1 deflagration 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. Compliant with standards: 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 flame arresterstructure principle

Structure Diagram of GZW-1 deflagration flame arrester


Component name and material

阀体材料Valve Body Material碳钢 WCB、不锈钢 304、316 / Carbon steel WCB,stainless steel 304,316
阻火芯体材料Fire Retardant Core Material不锈钢防爆阻火波纹板 / Stainless steel explosion-proof fire arresting corrugated plate
密封件材料Sealing Component Material耐油石棉橡胶、四氟 PTFE / Oil-resistant asbestos rubber,PTFE
环境温度℃Ambient Temperature ℃≤480 / ≤480℃
公称压力 (MPa)Nominal Pressure (MPa)0.6~5.0 / 0.6~5.0MPa
防爆级别Explosion-proof GradeBS5501:IIA、IIB、IIC / BS5501:IIA,IIB,IIC


GZW-1 deflagration 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 flame arresterstandard size

GZW-1 deflagration 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

Due to the rapid R&D iteration speed of valve products from China kaiweixi Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!