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A natural gas flame arrester, also known as a gas flame arrester, is used for installation in pipelines that transport flammable gases such as heating fuel gas, liquefied petroleum gas, and coal mine methane emissions; it is also suitable for domestic gas pipelines. Nominal diameter Physical image of the natural gas flame arrester (FPB model, flow rate): Structural features of the natural gas flame arrester: The natural gas flame arrester is designed and manufactured based on the principle that the narrow gaps between metal corrugated plates can extinguish subsonic or supersonic flames traveling through the pipeline. Structural features of the FPA type gas flame arrester: 1. This product is capable of quenching subsonic or supersonic flames in pipelines ； 2. This product generally comes with mating flanges, in accordance with the HGJ standard ； 3. This product can be used in conjunction with pipeline systems, as well as connected to control valves, breather valves, etc ； When selecting a flame arrester for oil pipelines, its safe flame arrestment speed should be greater than the flame propagation speed that can occur at the installation location. Main performance of high-pressure flame arrestors: 1. The flame arrestor was subjected to 13 subsonic flame tests in succession, and it managed to prevent the flames from passing through each time. To ensure that the flame arrester performs as required for safe use, it should be regularly inspected and maintained. 1. The flame arrester should be inspected every six months to check whether the core of the flame arrestive layer is blocked, deformed, corroded, etc. 2. The clogged flame arrestor core should be cleaned thoroughly to ensure that every hole in the core is unobstructed; any deformed or corroded flame arrestor cores should be replaced. 3. When reinstalling the fireproof core, ensure that the joint is airtight with no leaks. In this way, when selecting a natural gas flame arrester, one can first find the grade of the combustible gas specified in the relevant design standards, and then choose the appropriate flame arrester element based on the MESG value corresponding to that group of gases. 57×3.5 Flame arresters for gas pipelines are widely used in natural gas transmission pipelines in industries such as metallurgy and chemicals, for fuels in heating furnaces, liquefied petroleum gas, and coal mine gas emissions; they are also suitable for domestic gas pipelines. It can effectively cut off the ignition sources caused by the intense friction between debris and the pipe wall in high-speed airflow, preventing the reverse propagation of flames within the pipeline under abnormal conditions. Prevent pipeline explosions and fires. The safe flame arrestment speed of this product is 1425 m/s; the ultimate flame arrestment speed is 1605 m/s. Customers can directly weld this product to the appropriate section of the gas pipeline to make it operational. PN4.0MPa PN1.6MPa 73×4 32×3.5 The gas pipeline flame arrester, also known as FPB gas flame arrester, is composed of two GZW-1 flame arresters. It is designed and manufactured based on the principle of using the narrow gaps between metal corrugated discs to extinguish subsonic or supersonic flames traveling through the pipeline. The connection flanges of this product are designed in accordance with HG20595-97 standards for raised and recessed face welded steel pipe flanges; if customers need connection flanges that comply with other standards, they should specify this when placing the order. This applies to gas flame arresters with a pressure rating of PN＞4.0MPa.