LATEST RELEASE: May 2021 MSS AWARDS FIVE SCHOLARSHIPS TO ENGINEERING STUDENTS MSS is pleased to announce the 2021 recipients of the MSS/Tom Hannafin Scholarship Awards... April 2021 MSS PUBLISHES REVISED STANDARD FOR CLASS 150LW CORROSION RESISTANT FLANGES AND CAST FLANGED FITTINGS MSS announces that SP-51-2021, Class 150LW Corrosion Resistant Flanges and Cast Flanged Fittings, has been revised and published …
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SP-45-2020
SP-51-2021
SP-53-2021
SP-86-2021
SP-88-2021
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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: April 2021 Opened: April 2015 Project: 17-19 Committee: C-114 Standard: New SP Action: New SPECIAL HIGH-PRESSURE GAS TEST PROCEDURES FOR VALVES Finalizing for publication (4/7/2021).
Updated: April 2021 Opened: October 2018 Project: 20-02 Committee: C-408 Standard: New SP Action: New DESIGN REQUIREMENTS FOR ACTUATOR-TO-VALVE MOUNTING COMPONENTS Title/Scope approved and PN assigned. In committee development (3/16/2020).
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