SynC · Topic
These are the standards in the SynC Standards library that cover Pre-Action Sprinklers. Each one is a complete, plain-language specification: the scope it applies to, the requirements that govern it, and a structured equipment datasheet listing the values a project has to decide — ratings, materials, setpoints, and the standards each is verified against. All of it is free to read without an account and published under CC BY-SA 4.0.
A standard usually carries several topics, so most of the entries below also appear under neighbouring subjects. The topics each one carries are listed on its own page.
Automatic sprinkler systems designed to NFPA 13 in which the piping downstream of a pre-action or deluge valve is normally dry and water is admitted by a releasing control unit acting on a fire detection signal rather than by the opening of a sprinkler alone. Covers the decisions that exist only on these systems: the system type (non-interlock, single-interlock, and double-interlock pre-action, and deluge), the releasing detection and its initiating logic, the releasing control unit and its listing for releasing service, the release actuation of the valve, manual release and any release delay, the auxiliary functions tied to a release, the pre-action or deluge valve and its trim, the supervisory gas and its supply on a pre-action system, the water delivery time of a double-interlock system, the open discharge devices and zoning of a deluge system, and the trip test, releasing sequence tests, and air leakage test that prove the installation.