UL 1478 PDF
Price range: $143.64 through $287.28
Standard for Fire Pump Relief Valves
1 Scope
1.1 These requirements cover direct acting (spring loaded) and pilot operated fire pump relief valves of nominal 3/4 inch (19.05 mm) size and larger, intended for use in water supply systems for fire protection service.
1.2 Requirements for the installation and use of these valves are included in the Standard for the Installation of Stationary Pumps for Fire Protection, NFPA 20.
Summary of Topics
This revision to ANSI/UL 1478 is being issued to reflect the reaffirmation of ANSI approval of the Standard. No technical changes have been made to the document.
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