About Us

Officially founded in 1924, the Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry is a non-profit technical association organized for development and improvement of industry, national and international codes and standards for:

  • Valves
  • Valve Actuators
  • Valve Modification
  • Pipe Fittings
  • Pipe Hangers
  • Pipe Supports
  • Flanges
  • Associated Seals

The primary function of MSS is to provide its members the means to develop engineering standard practices for the use and benefit of the industry and users of its products. The Society, the only organization dedicated solely to the technical needs of the industry, is currently comprised of 24 technical committees to write, revise and reaffirm industry standards.

In its leadership role, the Society also contributes to and monitors code and standard development activities worldwide. MSS, in cooperation with other standardizing bodies, appoints representatives to other standardization organization committees to share the views and objectives of the Society.

Standards organizations in which MSS currently participates include, but are not limited to, the 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) and the National Fire Protection Association (NFPA).

At the international level, MSS representatives have served as leaders in U.S. delegations in many of the meetings of ISO working groups, subcommittees, and main committees addressing applicable areas of interest.

MSS Logo Creation, The William Powell Company, a Charter Member company, created a cast for the metal logos that hang in the MSS Office. Mr. Bob Koester is the engineer who designed the logo.


BOARD OF DIRECTORS

Membership Committee

Finance Committee

Personnel Committee

Coordinating Committee

MSS TECHNICAL COMMITTEES

Valves

Flanges & Fittings

Actuators & Pipe Hangers

General

Cast Iron Valves

Non-Ferrous Industrial Valves

Iron Flanges & Flanged Fittings

Steel Flanges & Flanged Fittings

Pipe Hangers

Marking & Terminology

Underwriter Valves

Ball Valves

Forged Steel Fittings

Non-Ferrous Fittings & Flanges

Valve Actuators

Quality Standards

Water Works Valves & Fittings

Plastic Valves & Fittings

Ferrous Threaded Fittings

Wrought Welding Fittings

Valve Operation

Steel Valves

Diaphragm Valves

Packings & Gaskets

Butterfly Valves

Instrument Valves

Valve Modification

Fuel Gas Valves, Fittings & Pipe Components


 

Standard Practices

MSS Membership

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May 18, 2013

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