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WELDING, CUTTING, AND BRAZING |
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Oxygen-Fuel Gas Welding and Cutting - Manifolding of Cylinders |
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Sometimes when welding, a portable cylinder is not used as the source of gas. A
service pipe system can be used to provide a manifolding effect. Manifolding is the
gathering of multiple-line fluid inputs into a single intake chamber. In other words, the
combining of gases needed for welding. This can be accomplished through the use of
portable outlet headers. Each header will control the flow of a particular gas. Portable
outlet headers (shown in purple) consist of the nozzle and hoses that can be connected to
a portable cylinder or a service pipe. Portable outlet headers shall not be used indoors except for temporary service where the conditions preclude a direct supply from outlets located on the service piping system. Each outlet on the service piping from which oxygen or fuel gas is withdrawn to supply a portable outlet header shall be equipped with a readily accessible shut-off valve (shown in red in the figure to the left). |
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