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Several types of valve connections for propane, butane, and LPG containers exist for transport and storage, sometimes with overlapping usage and applications, and there are major differences in usage between different countries. Even within a single country more than one type can be in use for a specific application.
POL valve on a 45 kg LPG cylinder Male fitting to match POL valve. A POL valve (originally for Prest-O-Lite) is a gas connection fitting used on liquefied petroleum gas (LPG) cylinders. The oldest standard for such connections, it was developed by the Prest-O-Lite company, hence the name. [1]
Pierceable gas cylinder Gas cylinder with Lindal B188 valve.. EN 417 is a European Standard concerning non-refillable metallic cartridges for liquefied petroleum gases.The standard specifies material, construction, inspection and marking requirements for cartridges with or without a valve, for use with portable appliances which comply with the requirements of EN 521.
LPG is composed mainly of propane and butane, while natural gas is composed of the lighter methane and ethane. LPG, vaporised and at atmospheric pressure, has a higher calorific value (46 MJ/m 3 equivalent to 12.8 kWh/m 3 ) than natural gas (methane) (38 MJ/m 3 equivalent to 10.6 kWh/m 3 ), which means that LPG cannot simply be substituted for ...
The range of available connection standards covers the majority of the range of industrial, ultra-pure and medical gases in use, including the medical pin index safety system, scuba cylinder valves and liquefied natural gas for home use. [5] The standards include: CGA V-1 Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections [5]
Common cylinder valve connections Gas type BS valve outlet (UK) [25] Acetylene: 2, 4 Air, breathing: 3 Air, industrial: 3 Argon: 3 Butane: 4 Carbon dioxide: 8 Carbon monoxide: 4 Chlorine: 6 Helium: 3 Hydrogen: 4 Methane: 4 Neon: 3 Nitrogen: 3 Nitrous oxide: 13 Oxygen: 3 Oxygen mixtures (>23.5%) Other guides apply Propane: 4 Xenon: 3