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The FPB stainless steel natural gas flame arrester is a flame arrestor safety device installed on gas transmission and distribution pipelines, specifically designed to prevent flame propagation in combustible gas pipelines. It features an internal stainless steel corrugated plate flame arrestor element, utilizing the tiny gaps between the corrugated plates to quench flames, effectively preventing backfire explosions. This flame arrester can be configured as deflagration or detonation type to suit various pipeline lengths and installation locations. Its core purpose is to be installed on natural gas, LPG, coal gas pipelines at regulator station outlets, customer inlets, burner supply lines, and vent systems, blocking flame propagation during accidental backfire to protect downstream equipment, personnel, and the environment.

Product Drawing of FPB stainless steel natural gas flame arrester
Features:
1. Threaded connections for easy installation: Standard female or male threads (such as NPT, G, M threads) allow direct screwing into pipeline or equipment ports without flange welding, ideal for small-bore piping.
2. Corrugated plate flame arrestor element: Alternately wound multi-layer stainless steel corrugated and flat strips form uniform narrow passages, providing high flame arresting efficiency with low pressure drop.
3. Bidirectional flame arresting: Capable of blocking flame propagation from either direction, suitable for small gas pipeline systems where combustion may initiate from either side.
4. Compact structure and light weight: Small size and light weight make it ideal for space-limited installations such as instrument cabinets, small tanks, or skid-mounted equipment.
5. Corrosion and high temperature resistance: Element and housing made of 304 or 316L stainless steel, resistant to corrosive gas environments and short-term high-temperature flame impact.
6. Easy maintenance: The flame arrestor element can be extracted from the housing for periodic cleaning of carbon deposits or impurities; threaded connections facilitate disassembly without special tools.
7. Code compliant: Designed and manufactured according to GB 5908, ISO 16852 and other standards, meeting fire and explosion protection requirements for small-bore flame arresters.

Structure Diagram of FPB stainless steel natural gas flame arrester
Component name and material
| 构件Component | 壳体Body | 阻火芯件Fire Retardant Core 螺栓/螺母 | 螺栓/螺母Bolt/Nut |
| 材质Material | 不锈钢 铝合金 碳钢不锈钢Stainless Steel 铝合金Aluminum Alloy 碳钢Carbon Steel | 304316316L | 304316316L |
Performance Specification Table
| 产品型号Model | FPB燃气管道阻火器FPB Gas Pipeline Flame Arrestor |
| 公称通径Nominal Diameter | DN15~DN300 |
| 公称压力Nominal Pressure | 1.6~6.4MPa |
| 适用介质Applicable Medium | 天然气、液化气、可燃气体Natural gas,liquefied gas,combustible gas |
| 工作温度Working Temperature | -40℃~+80℃ |
| 壳体材质Body Material | 碳钢WCB、304/316不锈钢WCB carbon steel,304/316 stainless steel |
| 阻火芯材质Core Material | 304/316不锈钢波纹304/316 stainless steel corrugated strip |
| 阻火等级Fire Rating | IIA/IIB/IIC级Grade IIA/IIB/IIC |
| 执行标准Executive Standard | GB 13347-2010 |

FPB stainless steel natural gas flame arrester of Outline Drawing
Outline dimension table
| 公 称 压 力nominal pressure | 3.0MPa (30KGf/cm2) | ||||||
| 公 称 直 径Nominal pressure | 主 要 尺 寸 (mm)Main Dimensions (mm) | ||||||
| DN | D1 | d | D2 | S1 | S2 | Lo | L |
| 15 | 18 | 12 | 18 | 3 | 3 | 49 | 500 |
| 15 | 22 | 16 | 22 | 3 | 3 | 49 | 500 |
| 20 | 25 | 19 | 25 | 3 | 10 | 500 | |
| 25 | 81 | 20 | 32 | 3 | 3 | 49 | 500 |
| 25 | 34 | 28 | 34 | 3 | 3 | 49 | 500 |
| 32 | 38 | 31 | 38 | 3.5 | 3.5 | 49 | 500 |
| 32 | 42 | 35 | 42 | 3.5 | 3.5 | 49 | 500 |
| 40 | 45 | 38 | 45 | 3.5 | 3.5 | 49 | 500 |
| 40 | 48 | 41 | 48 | 3.5 | 3.5 | 49 | 500 |
| 50 | 60 | 52 | 60 | 4 | 4 | 49 | 500 |
| 50 | 57 | 48 | 67 | 4.5 | 4.5 | 49 | 500 |
| 65 | 76 | 68 | 76 | 4 | 4 | 49 | 500 |
| 80 | 90 | 80 | 89 | 4.5 | 4.5 | 49 | 500 |
| 100 | 169 | 147 | 168 | 6 | 6 | 89 | 500 |
| 150 | 168 | 166 | 168 | 6 | 6 | 99 | 500 |
| 200 | 226 | 206 | 218 | 10 | 6.5 | 149 | 500 |
| 250 | 289 | 269 | 273 | 12 | 7 | 149 | 500 |
| 800 | 387 | 509 | 323 | 14 | 8 | 149 | 500 |
| 350 | 391 | 359 | 377 | 16 | 9 | 149 | 500 |
| 400 | 444 | 408 | 428 | 18 | 9 | 149 | 500 |
| 450 | 498 | 458 | 478 | 20 | 10 | 149 | 500 |
| 500 | 550 | 508 | 528 | 20 | 12 | 149 | 500 |

Model:
GFQ-6/ GFQ-10/ GFQ-16/GFQ-6P/ GFQ-10P/ GFQ-16PSpecification:
DN25-DN300Pressure:
0.6Mpa-16MpaMaterial:
cast iron, aluminum alloy, stainless steel
Model:
GHF-1-6C/GHF-1-10C/GHF-1-16CSpecification:
DN80 ~ DN250Pressure:
0.6Mpa-1.6MpaMaterial:
carbon steel
Model:
TGK-500A/TGK-500B/TGK-500C/TGK-500DSpecification:
DN500-DN750Pressure:
1.6MPAMaterial:
cast steel, stainless steel