ULC 1285 2022

These requirements cover polyvinyl chloride (PVC) pressure pipe, machined couplings, fabricated fittings and gaskets and oriented polyvinyl chloride (PVCO) pressure pipe and gaskets for use in underground fire protection systems and connections to such systems.
These requirements do not cover fittings that consist of mechanical joint retainer devices even when intended for use with polyvinyl chloride (PVC) pressure pipe.
PVC pipe and couplings covered by these requirements shall be designated according to the Nominal Size, Pressure Class (PC), and Dimension Ratio (DR), as specified in ANSI/AWWA C900 for use with cast iron outside diameter (CIOD) or steel (IPS) pipe as applicable.
PVCO pipe covered by these requirements shall be designated according to the Nominal Size, Pressure Class (PC), Expansion Ratio (ER) and Wall-Thickness-Ratio (WTR), as specified in ANSI/AWWA C909 for use with ductile-iron equivalent OD (DIOD) pipe.
Requirements for the installation and use of PVC pressure pipe and couplings for fire protection service are specified in the Standard for the Installation of Private Fire Service Mains and their Appurtenances, NFPA 24 or the Standard for the Installation of Sprinkler Systems, NFPA 13.