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    Why LPG cylinder valves are made up of brass?

    2017/10/30      view:

    What is Brass?

    Brass is the broad term for a range of copper-zinc alloys.


    Depending on the composition, the physical properties of the metal can vary. This includes strength, machinability, ductility, wear-resistance, hardness, colour, anti-microbial, electrical conductivity, thermal conductivity and corrosion resistance.Two qualities, the ability to form castings and great machinability, make brass the perfect choice for manufacturing precision valves and fittings.


    Does Brass Spark?

    Sparks generated by frictioncan commonly occur when other metals impact on each other or on other materials such as steel or concrete. A mechanical or frictional spark is generated.Unlike ferrous metals metals containing Iron which will generate sparks upon impact, brass does not spark on impact. Brass is considered to be "non-sparking".Brass also tolerates low temperatures. This is important because LPG vapourisation can cause gas bottles and valves to become very cold. Brass does not become brittle at low temperatures, unlike mild steel.

    Avoiding Sparks

    The need to avoid sparks in a flammable environment, such as around LPG gas vapour, is easy to understand. The fact that brass does not spark makes it ideal for the coupling of LPG valves and hoses. The perfect everyday examples are BBQ gas valves, regulators and autogas filling guns.During the connection of these common LPG fittings, it is not at all unusual for the fittings to bang into each other. Being made from brass means that these impacts do not generate any sparks, preventing possible ignition, if flammable gas vapour were to be present.


    Brass is Recyclable

    The recycling of brass is common around the world.  Its high value provides great incentive to recycle. Old gas valves and fittings are all recycled. Making products from recycled brass is much more economical than using virgin brass.Brass is a Bad Match for Acetylene. Talk about explosive marriages! Brass is not quite perfect. Brass coming in direct contact with acetylene may form explosive acetylides. Acetylene also forms explosive compounds with copper, copper salts, mercury/mercury salts, silver/silver salts and nitric acid. Needless to say, the valves and fittings on acetylene cylinders are not made from brass.


    Final Thoughts  

    The LPG industry is fine tuned for safety.

    The use of brass fittings and cotton clothing are just two of the many safety precautions taken with LPG gas.

    If it was possible for a company to be "Obsessive-Compulsive" about anything, it would be the Elgas concern for safety.

    Nothing is more important than the safety of our customers, employees and the community.

    We can provide special purpose machine with professional technology to your brass LPG cylinder valve production line. Welcome inquiry.



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