You are currently viewing Manufacturers Standardization Society: What is MSS: Article & Quiz with 7 MCQs II A Comprehensive Guide

Manufacturers Standardization Society: What is MSS: Article & Quiz with 7 MCQs II A Comprehensive Guide

Codes & Standards

What is MSS Quiz

1. MSS’s Foundation Year: What is MSS

When was the Manufacturers Standardization Society (MSS) founded w.r.t. What is MSS

2. MSS’s Core Mission: What is MSS

What is the core mission of the Manufacturers Standardization Society?

3. MSS Technical Committees: What is MSS

How many dedicated technical committees does MSS have?

4. MSS Collaboration

Which organization is NOT mentioned as a collaboration partner of MSS?

5. MSS Technical Landscape

Which committee oversees standards for steel flanges and their compatible fittings?

6. Recent MSS Standard

What does the MSS standard SP-67-2011 focus on?

7. MSS’s Role in the Industry

What role does MSS play in ensuring the quality, safety, and efficiency of piping systems?

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What is MSS (Manufacturers Standardization Society)

Founded in 1924, the Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry stands as a non-profit technical association dedicated to safeguarding and advancing the industry’s best practices. Through the development and improvement of national and international codes and standards, the MSS plays a crucial role in ensuring the safety, reliability, and performance of valves, fittings, and associated components used in countless applications across various sectors.

A Diverse Scope:

The MSS’s purview encompasses a wide range of products vital to piping systems, including:

  • Valves: Gate, globe, angle, check, ball, butterfly, diaphragm, and more
  • Valve Actuators: Electric, pneumatic, hydraulic, and manual
  • Pipe Fittings: Flanges, elbows, tees, reducers, and more
  • Valve Modification Services: Flange additions, stem extensions, and other customizations
  • Flanges: Raised face, flat face, ring joint, and more
  • Pipe Hangers and Associated Seals: Supporting and securing piping systems

Primary Function: Empowering Industry Members:

The MSS’s core mission revolves around empowering its members, which include manufacturers, distributors, and end-users, to develop and implement engineering standard practices that benefit the entire industry and its users. This is achieved through a network of 24 dedicated technical committees composed of industry experts who collaborate on writing, revising, and reaffirming industry standards.

Collaborations and Recognition:

The MSS actively participates in and collaborates with numerous recognized standards organizations, including:

  • American Society of Mechanical Engineers (ASME)
  • American National Standards Institute (ANSI)
  • American Society for Testing and Materials (ASTM)
  • American Petroleum Institute (API)
  • American Waterworks Association (AWWA)
  • National Fire Protection Association (NFPA)

This extensive collaboration ensures that MSS standards align with the latest industry advancements and best practices, contributing to their widespread adoption and recognition across the globe.

A Glimpse into the MSS Technical Landscape:

To illustrate the depth and breadth of the MSS’s technical expertise, here’s a snapshot of some key committees:

  • Cast Iron Valves: Overseeing standards for cast iron gate, globe, angle, and check valves
  • Non-Ferrous Industrial Valves: Addressing standards for bronze, iron, and steel industrial valves
  • Iron Flanges and Flanged Fittings: Establishing standards for iron flanges and associated fittings
  • Steel Flanges and Flanged Fittings: Developing standards for steel flanges and their compatible fittings
  • Diaphragm Valves: Focusing on standards for diaphragm valves used in various applications
  • Actuators and Pipe Hangers: Addressing the standardization of valve actuators and pipe hanging systems

This is just a small sample of the diverse range of technical areas covered by the MSS, showcasing its commitment to providing comprehensive and up-to-date standards for the valve and fitting industry.

A Closer Look at Recent MSS Standards:

The MSS actively publishes and updates its standards to reflect the latest advancements and address evolving industry needs. Here are some notable recent standards:

  • SP-6-2012: Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings
  • SP-42-2009: Corrosion Resistant Gate, Globe, Angle and Check Valves with Flanged and Butt Weld Ends (Classes 150, 300 and 600)
  • SP-58-2009: Pipe Hangers and Supports – Materials, Design, Manufacture, Selection, Application, and Installation (ANSI-approved)
  • SP-67-2011: Butterfly Valves
  • SP-70-2011: Gray Iron Gate Valves, Flanged and Threaded Ends
  • SP-72-2010a: Ball Valves with Flanged or Butt-Welding Ends for General Service
  • SP-88-2010: Diaphragm Valves
  • SP-91-2009: Guidelines for Manual Operation of Valves
  • SP-92-2012: MSS Valve User Guide

These are just a few examples of the numerous standards developed and maintained by the MSS, demonstrating its dedication to providing valuable resources for ensuring the safety, reliability, and performance of valves and fittings in various applications.


The Manufacturers Standardization Society (MSS) stands as a pillar of the valve and fitting industry, actively shaping the landscape through its commitment to developing and promoting industry-wide standards. By fostering collaboration, facilitating innovation, and disseminating best practices, the MSS plays a critical role in ensuring the quality, safety, and efficiency of piping systems across diverse sectors. As the industry continues to evolve, the MSS remains

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