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ISO/TR 42505:2026 Sharing economy — Shared manufacturing — Concepts and models

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TEMA 11th Edition – Book of Standards (Not for Resale)

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MSS SP-120-2024

MSS SP-120-2024: Flexible Graphite Packing Sealing for Rising Stem Valves

CDN $186.00

SKU: 4163d3d65e55 Category:

Description

This Standard Practice is applicable to isolation valves that use flexible graphite compression packing stem sealing to achieve reduced or low emissions. This Standard Practice also encompasses dimensions and tolerances applicable to ASME B16.34 gate and globe valves designed with rising non-rotating and rising rotating stems. Quarter-turn valve designs are outside the scope of this Standard Practice; and is applicable to valves in which a flexible graphite compression packing assembly is used as the primary stem-sealing system.

Edition

1

Published Date

2025-08-11

Status

Current

Pages

18

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

This Standard Practice is applicable to isolation valves that use flexible graphite compression packing stem sealing to achieve reduced or low emissions. This Standard Practice also encompasses dimensions and tolerances applicable to ASME B16.34 gate and globe valves designed with rising non-rotating and rising rotating stems. Quarter-turn valve designs are outside the scope of this Standard Practice; and is applicable to valves in which a flexible graphite compression packing assembly is used as the primary stem-sealing system.

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