UFGS 23 64 26 Chilled, Chilled-Hot, and Condenser Water Piping Systems

In response to CCRs 9060, 13651, and 14220, ‘Pump Discharge Valve’ (submittal and paragraph) has been removed from the section as it conflicted with UFC 3-410-01 Heating, Ventilating, and Air Conditioning Systems’.

Updated paragraph "Valves" (3.1.5) removed sentence regarding omitting isolation valves

Incorporated dispersal of criteria from the retired UFC 3-440-05N TROPICAL ENGINEERING, and the addition of corrosion protection criteria to coordinate with UFC 1-200-01 DoD BUILDING CODE.

Updated Technical Note in 2.2.2-Fittings and End Connections (Joints)

UFGS sustainability/energy updates to comply with Navy and DoD policies to enforce requirements of UFC 1-200-02 "High Performance and Sustainable Building Requirements".

Modified subparts 2.2.2, 2.2.2.4, 2.6.3, and 3.1.4.4 to show grooved connections are not used on NAVFAC projects.

Added subparts 2.3 and 3.2; revised subparts 2.2.2.2, 2.4.1, 2.7.13. 2.7.16, 2.8.5, 2.17.5.1 and 3.5.2

Editorial changes to subparts 2.3 & 2.4

Section References (SRF) update paragraph 2.12

Added note "Not for use in Navy projects" to paragraphs 'Piping for Steam and Condensate' (2.3) and 'Piping for High-Pressure Compressed-Air Systems' (2.4)

Added NASA requirements