MSS SP 120
Flexible Graphite Packing Sealing for Rising Stem Valves
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| Organization: | MSS |
| Publication Date: | 1 January 2017 |
| Status: | active |
| Page Count: | 14 |
scope:
This Standard Practice is applicable to valves that use flexible graphite packing stem sealing to achieve reduced or low emissions.
This Standard Practice encompasses dimensions and tolerances applicable to ASME B16.34 gate and globe valves designed with rising non-rotating and rising rotating stems.
This Standard Practice applies to valves in which a flexible graphite packing assembly is used as the primary stem-sealing system.
Valves that include a lantern ring as part of its packing system, and bonnetless valves with split glands, are outside the scope of this Standard Practice.
Document History
MSS SP 120
January 1, 2017
Flexible Graphite Packing Sealing for Rising Stem Valves
This Standard Practice is applicable to valves that use flexible graphite packing stem sealing to achieve reduced or low emissions.
This Standard Practice encompasses dimensions and tolerances...
January 1, 2011
Flexible Graphite Packing System for Rising Stem Valves – Design Requirements
This Standard Practice establishes material and dimensional requirements for valve packing, packing chamber, packing gland, packing washer, bonnet, and the stem, as they relate to the total packing...
January 1, 2006
Flexible Graphite Packing System for Rising Stem Steel Valves - Design Requirements
This Standard Practice establishes material and dimensional requirements for valve packing, packing chamber, packing gland, packing washer, bonnet, and stem as they relate to the total packing...
January 1, 2002
Flexible Graphite Packing System for Rising Stem Steel Valves - Design Requirements
A description is not available for this item.
March 1, 1997
Flexible Graphite Packing System for Rising Stem Steel Valves (Design Requirements)
A description is not available for this item.