The (Instrument Valves) is a standard published by the Manufacturers Standardization Society (MSS) that provides essential requirements for instrument valves used in general industrial applications. Key Scope and Contents
First published to address a gap in the industry, this standard provides the dimensional and material requirements for valves specifically used in instrumentation systems. While larger valves (like gate or ball valves) are covered by ASME or API standards, smaller instrument valves often fell into a gray area until MSS SP-99 was established.
Understanding the MSS SP-99 Standard for Instrument Valves The standard is a critical industrial specification established by the Manufacturers Standardization Society (MSS) . It provides a common framework for the design, testing, and performance of small valves and manifolds used primarily in instrumentation, control, and sampling systems. Scope and Application mss sp99 pdf
. It is available as a PDF or hard copy from authorized distributors like the MSS Webstore ANSI Webstore Manufacturers Standardization Society
Every valve manufactured to MSS SP-99 must undergo strict quality control testing before leaving the factory. These tests usually include: The (Instrument Valves) is a standard published by
Because instrument valves often use manufacturer-exclusive sealing technologies, the standard focuses on safety and performance rather than limiting dimensions or restricting specific component designs. 🛒 Where to Access the PDF
Purchasing an official copy ensures you receive the latest revisions, errata sheet updates, and a licensed document that satisfies regulatory audits. Understanding the MSS SP-99 Standard for Instrument Valves
(Standard Practice for Instrument Valves ) is a critical industry guideline published by the Manufacturers Standardization Society (MSS)
Valves must be constructed from materials capable of withstanding industrial environments. Common materials include: ASTM A182 / A479 (316/316L Stainless Steel) ASTM A105 (Carbon Steel)