MSS SP-143-2018

Current Revision
Live-Loaded Valve Stem Packing Systems

Best Price Guarantee Jan 1, 2018 English 18 Pages

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MSSA SP-143-2018 establishes the minimum requirements for the application, design and installation of live-loaded stem packing systems for valves designed in accordance with ASME B16.34, having rising and/or rotating stems. It applies to valves with flexible graphite, polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (ePTFE), or other packing stem seal material, regardless of frequency of operation.
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