Valves are a vital part of the piping systems that run like arteries and veins throughout industrial plants. The ports of the valves are the main passageways for fluids; however, situations when additional, smaller supplementary lines attached to the primary valves are needed happen often. Regardless of which drains, valves or piping assemblies are attached to the main valve, they must be designed and constructed in accordance with many of the same construction and design standards and codes as those of the base valve and piping system so they can safely handle the same conditions, including the same pressures and temperatures. The auxiliary piping is attached to the valve by either a mechanical (threaded) or welded connection.
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