LATEST RELEASE: June 2021
MSS PUBLISHES NEW VALVE STANDARD FOR SUPPLEMENTAL HIGH-PRESSURE GAS TEST PROCEDURES
MSS announces that New SP-158-2021, Supplemental High-Pressure Gas Test Procedures for Valves, has been published …
MSS PUBLISHES REVISED STANDARD FOR VALVE USERS
MSS announces that SP-92-2021, Valve User Guide, has been revised and published …
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: 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).
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).