LATEST RELEASE: July 2021 MSS PUBLISHES REVISED STANDARD FOR CONNECTING JOINTS BETWEEN TAPPING MACHINES AND TAPPING VALVES MSS announces that SP-113-2021, Connecting Joints between Tapping Machines and Tapping Valves, has been revised and published … July 2021 MSS PUBLISHES REVISED QUALITY STANDARD FOR EVALUATION OF CAST SURFACE FINISHES MSS announces that SP-112-2021, Quality Standadrd for Evaluation of Cast Surface Finishes - Visual and Tactile Method, has been revised and published …
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SP-45-2020
SP-51-2021
SP-53-2021
SP-60-2021
SP-86-2021
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Active American National Standard Projects (ANSI/MSS)
Updated: April 2021 Opened: September 2020 Project: 20-04-ANS Committee: C-304 Standard: SP-138-2014 Action: Revise QUALITY STANDARD PRACTICE FOR OXYGEN CLEANING OF VALVES AND FITTINGS (ANSI-APPROVED AMERICAN NATIONAL STANDARD) In committee ballot review - no further ANSI action needed at this time (11/25/2020).
Updated: April 2021 Opened: October 2020 Project: 20-20-ANS Committee: C-409 Standard: SP-135-2016 Action: Revise HIGH PRESSURE KNIFE GATE VALVES (ANSI-APPROVED AMERICAN NATIONAL STANDARD) In ANSI committee ballot review due to negative vote (4/5/2021).
Active MSS Standard Projects (New Standards)
Updated: September 2021 Opened: May 2011 Project: 11-23 Committee: C-304 Standard: New SP Action: New PROTECTION OF VALVES, FITTINGS, AND ACTUATORS FROM DAMAGE DURING SURFACE PREPARATION AND APPLICATION OF COATINGS In committee development (5/7/2021).
Updated: June 2021 Opened: June 2021 Project: 21-18 Committee: C-403 Standard: New SP Action: New PRE-INSULATED PIPE HANGERS, PRE-INSULATED PIPE SUPPORTS, AND THERMAL SHIELDS – MATERIALS, DESIGN, TESTING, MANUFACTURE, SELECTION, APPLICATION, AND INSTALLATION CC approved title/scope and PN assigned (6/4/2021).
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