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UL 1478A
UL 1478A Standard for Pressure Relief Valves for Sprinkler Systems
standard by Underwriters Laboratories, 05/20/2013
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M00002156
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Full Description
Please note: All interim revisions for this edition available at time of your purchase will be included.Pressure Relief Valves for Sprinkler Systems
UL 1478A
These requirements cover pressure relief valves intended for use in sprinkler systems for fire protection service to relieve excessive pressures caused by thermal expansion, downstream of a pressure reducing valve or in valve trim.
Requirements for installation of these valves are included in the Standard for Installation of Sprinkler Systems, NFPA 13.
