MSS SP-143-2018
MSS SP-143-2018 Live-Loaded Valve Stem Packing Systems
standard by Manufacturers Standardization Society, 2018
Categories
- ASME BPVC 2019
- ANSI
- ASME
- ASME BPVC
- API
- ASTM
- SAE
- BS
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- AASHTO
- AATCC
- ABMA
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- AWWA
- B11
- BHMA
- CAN/CGSB
- CAN/ULC
- CECC
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- CIE
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- New Standards
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- RTCA DO
- SMACNA
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- TMS
- USP
- UTS
- VDI
Full Description
MSS SP-143-2018 establishes the minimum requirements for the application, design and installation oflive-loaded stem packing systems for valves designed in accordance with ASME B16.34, having risingand/or rotating stems. It applies to valves with flexible graphite, polytetrafluoroethylene (PTFE), expandedpolytetrafluoroethylene (ePTFE), or other packing stem seal material, regardless of frequency of operation.This Standard Practice does not apply to valves that include a lantern ring(s) as part of its packing system or to self-energized packing.
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