MSS SP-120-2017
- Flexible Graphite Packing System for Rising Stem Steel Valves
- standard by Manufacturers Standardization Society,
- Category: MSS
$109.00
$55.00
SCOPE
1.1 This Standard Practice is applicable to valves that use flexible graphite packing stem sealing to achievereduced or low emissions.
1.2 This Standard Practice encompasses dimensions and tolerances applicable to ASME B16.34 gate andglobe valves designed with rising non-rotating and rising rotating stems.
1.3 This Standard Practice applies to valves in which a flexible graphite packing assembly is used as theprimary stem-sealing system.
1.4 Valves that include a lantern ring as part of its packing system, and bonnetless valves with splitglands, are outside the scope of this Standard Practice.
1.1 This Standard Practice is applicable to valves that use flexible graphite packing stem sealing to achievereduced or low emissions.
1.2 This Standard Practice encompasses dimensions and tolerances applicable to ASME B16.34 gate andglobe valves designed with rising non-rotating and rising rotating stems.
1.3 This Standard Practice applies to valves in which a flexible graphite packing assembly is used as theprimary stem-sealing system.
1.4 Valves that include a lantern ring as part of its packing system, and bonnetless valves with splitglands, are outside the scope of this Standard Practice.
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